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MOTORCYCLE 100% Guaranteed Fitment

Transmission

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1974 suzuki challenger-tm125
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Quick answer: The Transmission for the 1974 1974 suzuki challenger-tm125 (MOTORCYCLE) consists of 42 OEM components. 33 are currently matched to live Amazon/eBay listings, priced from $3.11–$149.99.
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COUNTERSHAFT ASSY | K,L

This genuine OEM Suzuki countershaft gear, part number 24120-28304, is engineered for precise fitment and optimal performance in the following models: TM100 (1974-1978), RM100 (1974-1978), RM125 (1973-1975), and TM125 (1973-1975). Constructed from high-grade steel, the gear ensures durability under demanding operating conditions while maintaining the exact specifications required for seamless integration with Suzuki’s transmission assembly.

Designed as a direct replacement component, this NOS (New Old Stock) part guarantees compatibility with stock applications, eliminating the need for modifications. Its precision engineering supports smooth power transfer and consistent gear engagement, making it an ideal choice for restoration projects, vintage motorcycle maintenance, or routine service requirements. The countershaft gear is packaged in protective OEM-style wrapping to preserve its condition during shipping and storage.

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COUNTERSHAFT | L,M; SEE NOTE 2.

This OEM countershaft shaft (Part No. 24121-28303) is an authentic replacement component designed for Suzuki TM100, TM125, RM100, and RM125 models produced between 1973 and 1978. Engineered to meet original equipment manufacturer specifications, this NOS (New Old Stock) part ensures precise fitment and reliable performance in restoration projects or routine maintenance.

Constructed from durable steel and finished with a protective coating, the countershaft shaft is engineered for durability under high-stress conditions common in off-road and motocross applications. Compatible with both TM and RM series models from the specified era, this component maintains compatibility with the transmission system, ensuring seamless integration into existing assemblies without modifications.

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GEAR, 3RD DRIVE | NT:20

This genuine OEM Suzuki 3rd drive gear (part number 24231-28300) is a new old stock (NOS) replacement component designed for precise compatibility with select Suzuki motorcycle models from 1974 to 1976. Engineered to meet original equipment manufacturer specifications, this gear ensures reliable power transmission in the transmission assembly, maintaining optimal gear ratios for smooth operation.

Manufactured to strict Suzuki standards, this NOS part guarantees durability and proper fitment for RM100, RM125, TM100, and TM125 models, restoring factory-level performance. Ideal for restoration projects or routine maintenance, this component eliminates the risk of premature wear associated with aftermarket alternatives.

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GEAR, 4TH DRIVE | NT:22

This genuine OEM Suzuki part, bearing the part number 24241-28300, is the 4th drive gear NOS designed for specific Suzuki models. Manufactured to Suzuki's exacting standards, this component ensures seamless power transmission and optimal drivetrain performance.

Engineered for durability and reliability, the 4th drive gear provides precise gear ratios essential for maintaining engine efficiency and vehicle handling. The NOS designation indicates this gear is a New Old Stock item, maintaining original specifications and performance characteristics at the time of its production.

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CIRCLIP

The **OEM Suzuki 09380-200007 Circlip** is a high-quality, original equipment manufacturer (OEM) replacement part designed for precise fitment in Suzuki vehicles. Crafted from durable, heat-treated steel, this circlip ensures reliable retention of shafts, bearings, and other rotating components under demanding operational conditions.

Ideal for maintenance and restoration applications, this circlip meets strict engineering standards for dimensional accuracy and material integrity. Compatible with Suzuki models requiring original specification 09380-20007, it provides a seamless, interference-free installation for optimal performance. Suitable for both professional mechanics and DIY enthusiasts, this part guarantees long-lasting functionality when properly installed.

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DRIVESHAFT

This genuine OEM Suzuki Drive Shaft, part number 24131-28001, is engineered for optimal compatibility and durability in select Suzuki vehicle models. Manufactured to stringent OEM standards, it ensures precise fitment and reliable performance, maintaining the integrity of the drivetrain system.

Designed for direct replacement, this drive shaft is crafted from high-grade materials to withstand rigorous driving conditions. It includes necessary mounting hardware and adheres to Suzuki’s exacting specifications for balance and alignment, guaranteeing smooth operation and extended service life.

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GEAR, 1ST DRIVEN | NT:30

This genuine Suzuki No. 1 driven gear set (Part No. 24310-28300) is engineered for precise performance in Suzuki TM100, TM125, and RM125 models. The set includes two identical driven gears, ensuring reliable operation and smooth power delivery in high-demand applications.

Designed for durability and optimal gear engagement, these components are manufactured to OEM specifications, guaranteeing compatibility with your motorcycle's drivetrain. The driven gear facilitates efficient torque transfer, enhancing acceleration and overall riding experience.

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GEAR, 2ND DRIVEN | NT:27

Genuine OEM Suzuki replacement part designed for RM100, RM125, TM100, and TM125 models. This second gear assembly ensures precise gear engagement and reliable transmission performance for off-road and motocross applications. Constructed from high-quality alloy steel, it meets Suzuki's strict durability and compatibility standards.

Part number 24321-28300 guarantees exact fitment for your motorcycle. Features include precision-machined teeth for smooth shifting and a hardened surface for extended service life. This gear is ideal for restoring or maintaining transmission integrity in high-performance riding conditions.

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GEAR, 3RD DRIVEN | NT:25

Genuine OEM Suzuki 3rd driven gear for TM125 and TM100 models, part number 24331-28300. This NOS (New Old Stock) transmission component is designed for precise fitment and optimal performance in Suzuki off-road motorcycles. Manufactured to original equipment specifications, it ensures compatibility with stock transmission assemblies, maintaining smooth gear engagement and durability.

The 3rd driven gear is a critical component for transmission operation, ensuring proper power delivery and shifting reliability in demanding riding conditions. This part is the last available in stock, making it a rare find for restoration or replacement projects. Verify model year compatibility before installation to ensure optimal performance.

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GEAR, 4TH DRIVEN | NT:23

This genuine NOS Suzuki transmission gear, part number 24341-28300, is designed for optimal compatibility and durability in TM100, TM125, and RM125 models. Precision-engineered to meet OEM specifications, it ensures seamless integration with the drivetrain for reliable performance.

The gear is manufactured to strict quality standards, delivering consistent torque transmission and reduced wear. Suitable for both stock and performance applications, it maintains the integrity of the transmission system while supporting smooth gear shifts. Ideal for restoration or replacement projects, this component restores functionality to your Suzuki motorcycle with factory-grade precision.

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GEAR, 5TH DRIVEN | NT:21

This genuine Suzuki 5th driven gear is engineered for TM100, RM125 models produced between 1973 and 1975. Sold as part number 24351-28300, this component is essential for maintaining optimal transmission performance in high-demand applications. Specifically designed for durability, the gear ensures smooth gear engagement and reliable power transfer, reducing wear on adjacent drivetrain components.

The gear is compatible with select Suzuki motorcycle models from the specified years, including those requiring part number 24351-28300. Precision-machined to Suzuki’s strict OEM standards, it guarantees a perfect fit and function, restoring factory-level performance in restoration or repair projects. This component is sold individually as part 2, ensuring genuine quality for demanding mechanical applications.

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WASHER

This genuine Suzuki OEM transmission washer, part number 08211-15301, is specifically designed for models including the TM125, TS125, TC125, TS185, and TM100. Engineered to precise Suzuki specifications, this washer ensures optimal performance and durability in transmission assemblies by providing the correct clearance and load distribution between components.

Manufactured to exacting OEM standards, this NOS (New Old Stock) part guarantees a perfect fit and reliable operation in critical transmission applications. The washer’s material composition and dimensional accuracy adhere to Suzuki’s rigorous quality controls, making it an essential component for maintaining the integrity and longevity of your transmission system.

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LOCK WASHER (L)

This original equipment manufacturer (OEM) washer, part number 09167-20022, is a direct replacement component designed for select Suzuki motorcycle models, including the TM100, TS125, TS185, and T125. Engineered to OEM specifications, the washer ensures precise fitment and reliable performance in critical applications.

Manufactured to meet original equipment standards, this NOS (New Old Stock) washer delivers consistent sealing integrity and durability for bolted assemblies. It is intended for use in hardware applications where precise load distribution and torque retention are required to maintain component integrity under operational stress.

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CIRCLIP

This genuine OEM Suzuki Transmission Circlip (Part No. 09380-20006) is designed for precise fitment in the RV125, TS125/185, and TM100/125 models. The circlip ensures secure retention of transmission components, maintaining optimal gear engagement and preventing axial movement. Engineered to meet Suzuki's exacting standards, this component delivers reliable durability and performance.

Constructed from high-quality spring steel, the transmission circlip is resistant to wear and fatigue under normal operating conditions. It is a direct replacement for the original equipment, ensuring seamless integration with the transmission system of compatible Suzuki models. Ideal for restoration projects, routine maintenance, or emergency repairs, this circlip is an essential component for maintaining transmission integrity.

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BALL BEARING

This genuine Suzuki bearing, part number 08113-60060, is an OEM factory component designed for optimal performance and durability in select Suzuki motorcycle models. Engineered to meet Suzuki’s stringent quality standards, this bearing ensures smooth operation and extended service life under demanding conditions.

Manufactured for applications in the TS, TC, TM, GT, and RM series, this new old stock (NOS) bearing delivers reliable mechanical integrity. It is recommended for direct replacement in compatible models, maintaining factory specifications without compromise.

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BEARING

This NSK genuine OEM Suzuki bearing, part number 08113-60020, is engineered for optimal performance and durability in compatible Suzuki models including the TS, TC, TM, RM, and Alt series. Manufactured to NSK's stringent quality standards, this bearing ensures reliable operation under high-load conditions, providing smooth rotational movement for critical drivetrain components.

Constructed with precision-grade materials, the bearing features a robust inner and outer race design with optimized rolling elements for enhanced load capacity and reduced friction. The part meets or exceeds OEM specifications, guaranteeing a direct-fit replacement that maintains factory-level performance without compromise. Ideal for routine maintenance or performance upgrades, this bearing delivers long-lasting reliability for motorcycle enthusiasts and professional mechanics alike.

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BEARING

The DS100 Main Crank Shaft Bearings & Seal Kit is engineered for optimal performance and longevity in 78-81 Suzuki models. Designed to meet stringent OEM standards, it delivers precise alignment and smooth operation, reducing wear and extending engine life.

Installation is straightforward, featuring a complete set of components that replace worn bearings and seals simultaneously. The kit’s durable construction resists high temperatures and pressure, ensuring reliable performance under demanding operating conditions.

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The SAIL MARINE 09283-25107 oil seal is precision-engineered for Suzuki outboard motors, ensuring reliable sealing performance in high-stress applications. Designed with a shaft diameter of 25 mm, an outer diameter of 44 mm, and a width of 7 mm, this oil seal maintains optimal lubrication while preventing contaminants from entering critical engine components. The high-quality rubber construction delivers exceptional durability and resistance to wear, extending the service life of compatible Suzuki models.

This genuine replacement part is manufactured to meet OEM specifications, guaranteeing a precise fit for engines such as the TS125, TS185, RM100, RM125, TS250, TM125, and TS50. Each unit is brand new, directly sourced from SAIL MARINE’s professional production facility in Taiwan. Backed by a 1-year manufacturer warranty, this oil seal provides dependable performance for marine applications where engine integrity is paramount.

  • 0: Brand:SAIL MARINE
  • 1: All our products are high quality, brand new and in stock.SAIL MARINE Boat Motor 09283-25107 OIL SEAL FOR SUZUKI 25X44X7 TS125 TS185 RM100 RM125 TS250 TM125 TS50.
  • 2: If there is any problem with the received package, we will send you a new package for free within 7 days or refund your money.
  • 3: We are a professional manufacturer of outboard engine parts from Taiwan,. If you are not sure if the product you purchased is suitable for your outboard engine, I will help you confirm it!
  • 4: Ref. Part Number: 09283-25107
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This OEM Suzuki oil seal, part number 09283-25107, is precision-engineered for optimal performance in compatible Suzuki motorcycle models. Designed with a 25mm inner diameter, 44mm outer diameter, and 7mm cross-sectional width, this seal ensures reliable sealing to prevent fluid leakage and contamination in critical engine components.

Compatible with TS125, TS185, TM125, TM100, and TS50 models, this high-quality oil seal is manufactured to meet OEM specifications for durability and fitment. Ideal for AHRMA and other racing or off-road applications, it maintains consistent performance under demanding conditions.

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HOLDER, BEARING

The Suzuki Countershaft Bearing Plate, part number 24741-28001, is an OEM-replacement component designed for optimal fitment in compatible Suzuki motorcycle models. Precision-engineered to meet strict manufacturing standards, this bearing plate ensures secure mounting for the countershaft assembly, providing stability and alignment critical for drivetrain performance. Engineered with durable materials, it maintains structural integrity under operational stress, contributing to prolonged service life of the powertrain.

Compatible with models including the Suzuki NOS DS185, RV125, and TC125, this bearing plate integrates seamlessly with factory specifications. The component is identified by its additional designation Y8a, ensuring accurate identification for replacement or repair applications. Manufactured to original equipment standards, it delivers reliable functionality for motorcycle maintenance and restoration projects.

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SCREW

The Suzuki SCREW 02112-06107 OEM New is a precision-engineered component designed to meet the highest standards of automotive reliability. Constructed from premium alloy steel, the screw delivers superior strength and durability while maintaining a lightweight profile suitable for modern vehicle applications. Its engineered thread profile ensures a secure fit and reduces wear, contributing to extended service life and consistent performance under demanding operating conditions.

Designed for seamless integration with existing Suzuki assemblies, this OEM replacement screw matches original specifications in both geometry and material composition. It is suitable for use in a variety of automotive systems requiring robust fastening solutions, including chassis mounting, suspension linkages, and engine component assemblies. The screw’s corrosion-resistant coating protects against environmental exposure, ensuring long-term stability and reducing maintenance requirements.

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NO DESCRIPTION AVAILABLE | NT:29

Genuine Suzuki OEM Kickstart Idle Gear (Part Numbers: 26260-28002, 26260-28003) is precision-engineered for compatibility with 1971-1981 Suzuki TM, TS, TC, GT, and RM motorcycle models. Designed to replace worn or damaged components, this idle gear ensures smooth kickstart operation and reliable engine engagement, maintaining original equipment performance standards.

Manufactured to Suzuki's strict OEM specifications, the gear features durable construction for long-lasting durability under rigorous operating conditions. Installation is straightforward, requiring no modifications to fit properly. This high-quality replacement part is ideal for restoration projects, routine maintenance, or replacing damaged idle gears to restore optimal functionality to your Suzuki motorcycle's kickstart system.

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GEAR, KICK STARTER DRIVEN | K; NT:31 SEE NOTE 3.

This OEM Suzuki NOS kick starter gear, part number 26281-36100, is engineered for compatibility with select Suzuki motorcycle models produced between 1971 and 1975. Designed to meet original equipment manufacturer (OEM) specifications, this gear ensures precise fitment and reliable performance, restoring original functionality to kick-start mechanisms.

Constructed from durable alloy steel, the kick starter gear delivers optimal strength and wear resistance for long-term durability. It is specifically compatible with the Suzuki TS125, RV125, and GT185 models from the specified model years. Installation requires standard mechanical tools, and the part is ready for immediate integration into existing assemblies without modification.

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GEAR, KICK STARTER DRIVEN | L,M

This NOS (New Old Stock) Suzuki DS185 GT185 RM125 kick starter drive gear, part number 26281-36200, is a genuine OEM factory component designed for precise fitment and optimal performance. Engineered with high-grade materials, the drive gear ensures reliable engagement with the kick starter mechanism, providing smooth operation and durability under standard operating conditions.

Compatible with Suzuki DS185 and GT185 models, this replacement part maintains original equipment specifications, ensuring seamless integration with existing drivetrains. The gear’s design aligns with factory tolerances, delivering consistent power transfer for reliable engine starting. Packaged as a new, unused component with full OEM backing, it is ideal for restoration projects, maintenance, or replacement of worn or damaged drive gears.

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BEARING | WITH TO 24120-24302

This genuine OEM Suzuki bearing (Part No. 09263-19005) is engineered for optimal performance in Suzuki GT185, TM100, and TM125 models. Precision-manufactured to exact factory specifications, it ensures reliable durability and smooth operation in high-stress applications. Compatibility extends to all compatible Suzuki models within the specified range, providing a direct replacement for worn or damaged bearings.

Constructed from high-grade materials, this bearing meets stringent OEM quality standards for seamless integration and long-lasting performance. Designed for ease of installation, it eliminates the need for modifications or adjustments, maintaining original equipment integrity. Ideal for restoration projects or routine maintenance, this bearing guarantees a precise fit and reliable operation in demanding conditions.

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BEARING | WITH TO 24120-24303

These original NOS (New Old Stock) roller bearings, part number 09263-19006, are precision-engineered for Suzuki RM1250, RM100, TS125, and TS185 models. Designed to meet OEM specifications, each set includes two bearings, ensuring optimal fitment and durability in demanding motorcycle applications.

Manufactured to exacting Suzuki standards, these roller bearings feature a sealed construction for contamination resistance and extended service life. Ideal for restoration projects or as a direct replacement in high-performance applications, they deliver reliable rotational smoothness and load-bearing capacity for rear wheel and transmission systems.

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BEARING

This NOS (New Old Stock) Genuine Suzuki Roller Bearing, part number 09263-21006, is an original equipment manufacturer (OEM) component designed for precise fit and long-lasting durability in Suzuki TS125 (1971-1976) and TS185 (1971-1980) motorcycle models. Manufactured to Suzuki's stringent quality standards, this bearing ensures optimal performance by maintaining smooth rotation of the engine's internal components, reducing friction and wear over time.

Constructed with high-grade materials, this roller bearing is engineered for compatibility with the specified Suzuki models, providing a reliable replacement for worn or damaged units. The bearing's precise dimensions and robust construction contribute to consistent operation under standard riding conditions, making it an essential component for motorcycle maintenance and restoration projects.

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WASHER

This genuine OEM Suzuki transmission countershaft washer is designed for use in the following models: A/RM100 and RV/TC90. Engineered with precision, the washer ensures optimal performance and durability in critical transmission components.

Manufactured to meet Suzuki's strict quality standards, this part is made from high-grade materials to resist wear and corrosion. The part number 09160-21007 ensures a perfect fit for direct replacement in compatible Suzuki vehicles, maintaining factory specifications.

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SPROCKET, ENGINE | K,L; NT:15, #428

The Parts Unlimited 27511-27100 Steel Front Sprocket is precision-engineered for the Suzuki RV 125 Tracker, ensuring optimal power transfer and durability. Constructed from high-quality steel, this 15-tooth sprocket delivers reliable performance under demanding riding conditions, making it an ideal replacement part for riders seeking longevity and precision.

Designed to meet OEM specifications, this front sprocket maintains compatibility with the Suzuki RV 125 Tracker drivetrain system. Its hardened steel construction resists wear and tear, providing consistent performance throughout extended use. The 15-tooth design ensures proper gearing ratios for improved acceleration and overall bike responsiveness.

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SPROCKET, ENGINE | K,L; NT:13 OPT

This OEM Suzuki engine sprocket is a direct replacement part designed for compatibility with specific motorcycle models from 1972 to 1977. Manufactured to original equipment standards, it ensures precise fitment and reliable performance for TS90, RM125, TS100, and TM125 models. The 13-tooth design is optimized for optimal gearing ratios, providing balanced power delivery and durability under standard operating conditions.

The sprocket features a durable construction, engineered to withstand the mechanical stresses of motorcycle operation. Its 27511-24901 part number corresponds to the exact specifications required for seamless integration with the engine assembly. Ideal for restoration projects or routine maintenance, this NOS (New Old Stock) component guarantees authentic Suzuki quality and longevity.

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SPACER

Authentic OEM Suzuki Spager part number 09180-20039 is designed for precise fuel system compatibility in compatible Suzuki vehicle models. Engineered to exacting factory standards, this component ensures optimal performance and reliability by maintaining proper fuel pressure and delivery. The spager functions as a critical element in the fuel injection system, facilitating efficient combustion and consistent engine operation.

Constructed from durable materials to withstand high-pressure environments, the 09180-20039 Spager is a direct replacement part that restores original equipment functionality. Installation requires no modifications, ensuring a seamless fit and reliable operation. This part meets or exceeds Suzuki's stringent quality and performance specifications for long-term durability.

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This COCOZOË sprocket replacement part is specifically designed for Suzuki ENG SPROCKET WA 09167-20009 applications. Engineered for optimal transmission performance, it ensures efficient power transfer in marine engines and boat equipment. The component is built to maintain reliable operation while delivering precise fitment for seamless integration with compatible systems.

This sprocket is intended for unisex-adult users and is supplied as pictured. Prior to purchase, verify model compatibility by comparing the provided product photos and specifications to ensure accurate fitment.

  • 0: For Suzuki ENG SPROCKET WA 09167-20009
  • 1: Designed for engines, this sprocket replacement part precise and efficient transmission.
  • 2: The WA 0916720009 model is a reliable choice for maintaining the optimal performance of your engine.
  • 3: Designed for reliable performance and accurate fit, helping keep your marine engine or boat equipment operating efficiently.
  • 4: To ensure proper compatibility, please confirm your model and compare the product photos and specifications before placing your order.
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The SUZUKI OEM clutch lock washer, part number 09167-20009, is engineered for precise fitment on DR250, DR350, and GS500 models. Constructed from high‑strength steel, the component provides reliable torque retention and prevents clutch assembly movement under load.

Designed to meet original equipment manufacturer standards, this lock washer ensures consistent performance and durability throughout the drivetrain system. It is an essential replacement part for maintaining optimal clutch operation and vehicle reliability.

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O RING

Precision engineered for the 2007-2009 Suzuki GSF1250S, this OEM center shaft O-ring delivers reliable sealing performance and optimal durability. Designed to exact specifications, it ensures a tight seal between the center shaft and housing, preventing fluid leakage and maintaining engine integrity.

Installation is straightforward: remove the existing O-ring, clean the mating surfaces, and place the new ring into the groove. The product meets all original manufacturer tolerances, guaranteeing a seamless fit and long-term reliability.

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Exact factory OEM # 24121-28302 may be temporarily out of stock in official store listings.
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Exact factory OEM # 24221-28300 may be temporarily out of stock in official store listings.
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Exact factory OEM # 24251-28301 may be temporarily out of stock in official store listings.
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Exact factory OEM # 27600-28310 may be temporarily out of stock in official store listings.
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Transmission — Frequently Asked Questions

What OEM parts are included in the Transmission for the 1974 suzuki challenger-tm125?

The Transmission for the 1974 suzuki challenger-tm125 includes 42 individual OEM components, each listed below with its exact OEM part number.

How much does the Transmission cost for the 1974 suzuki challenger-tm125?

Individual components in this assembly currently range from $3.11–$149.99, based on live Amazon and eBay listings. See the price comparison below for each part.

Will these OEM parts fit other 1974 suzuki challenger-tm125 model years or trims?

Manufacturers frequently reuse the same physical part across multiple model years and trims, so a given OEM part number can be compatible with more than just this exact vehicle — search the OEM number directly to see every vehicle it fits.

What is the OEM part number for COUNTERSHAFT ASSY | K,L on the 1974 suzuki challenger-tm125?

The OEM part number for the COUNTERSHAFT ASSY | K,L (part of the Transmission assembly) on the 1974 suzuki challenger-tm125 is 24120-28304.

Does OEM part 24120-28304 fit the 1974 suzuki challenger-tm125?

Yes — OEM 24120-28304 is listed as the COUNTERSHAFT ASSY | K,L for the 1974 suzuki challenger-tm125 (1974), part of the Transmission assembly.

Which parts are included in the Transmission?

COUNTERSHAFT ASSY | K,L, COUNTERSHAFT | L,M; SEE NOTE 2., GEAR, 3RD DRIVE | NT:20, GEAR, 4TH DRIVE | NT:22, CIRCLIP, DRIVESHAFT, GEAR, 1ST DRIVEN | NT:30, GEAR, 2ND DRIVEN | NT:27, and 34 more — see the full list below.

What other vehicles use OEM part number 24120-28304?

OEM 24120-28304 (COUNTERSHAFT ASSY | K,L) also fits 11 other vehicles in this catalog, including 1973 suzuki challenger-tm125 — Transmission, 1974 suzuki contender-tm100 — Transmission, 1975 suzuki challenger-tm125 — Transmission.

Cross-Marketplace Price Tracker
Compare total assembly price across Amazon Prime vs. eBay Certified Sellers.
Amazon Est. Total
$70.15
eBay Est. Total
$744.91