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Crankshaft Rm125b

Selected Vehicle
1978 suzuki rm125
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Quick answer: The Crankshaft Rm125b for the 1978 1978 suzuki rm125 (MOTORCYCLE) consists of 28 OEM components. 23 are currently matched to live Amazon/eBay listings, priced from $1.17–$120.00.
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Showing 28 Components
NO DESCRIPTION AVAILABLE | B; OS:0.5

Genuine Suzuki RM125 piston designed for 1977 through 1980 model years, ensuring perfect fitment and OEM reliability. This oversized piston features a bore diameter of 54.50 mm, providing a precise +0.50 mm overbore to accommodate engine rebuilds requiring additional clearance. Part number 12110-41311-050 guarantees authenticity and compatibility with Suzuki’s original manufacturing standards.

Crafted from high-grade aluminum alloy, the piston delivers optimal strength-to-weight ratio for high-performance applications while maintaining precise dimensional tolerances. Designed for direct replacement, it eliminates the need for custom machining, streamlining engine rebuilds or performance upgrades.

eBay Motors Stock Available

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Buy on eBay ($29.95)
NO DESCRIPTION AVAILABLE | B

This genuine OEM piston, part number 12110-41311-035, is designed for optimal performance and durability in compatible SUZUKI engines. Precision-engineered to meet manufacturer specifications, it ensures a perfect fit and reliable operation for various motorcycle and ATV models. Constructed from high-quality aluminum alloy, the piston delivers excellent heat dissipation and strength under demanding conditions.

Each piston undergoes rigorous quality control to guarantee dimensional accuracy within tight tolerances and includes precise ring grooves for optimal ring seating. Suitable for both stock and performance applications, this replacement piston maintains engine efficiency and power output while reducing the risk of premature wear.

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NO DESCRIPTION AVAILABLE | B; OS:0.25

This genuine Suzuki RM125 piston crankshaft kit, part number 12110-41311-025, is engineered for high-performance two-stroke operation. The kit includes a precision-machined piston, piston rings, wrist pin, and crankshaft assembly, ensuring optimal engine efficiency and durability.

Designed for direct replacement in the RM125 model, this kit meets OEM specifications for fitment and functionality. The piston features a forged aluminum construction with a durable nickel-silicon coating for enhanced wear resistance. Compatible with standard RM125 engine configurations.

eBay Motors Stock Available

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Buy on eBay ($26.34)
4
NO DESCRIPTION AVAILABLE | B; OS:0.5; FROM 12140-41650

NO DESCRIPTION AVAILABLE | B; OS:0.5; FROM 12140-41650

eBay Preferred
OEM Ref: 12140-41660-050
Also fits 3 other vehicles
NO DESCRIPTION AVAILABLE | B; OS:0.5; FROM 12140-41650

This genuine Suzuki RM125 1977 piston ring set (part number 12140-41660-050) is precision-engineered for optimal engine performance. The set includes all necessary rings to ensure proper compression and combustion efficiency in the RM125’s two-stroke engine. Designed for durability, the rings provide a tight seal between the piston and cylinder wall, minimizing blow-by and maintaining consistent power output.

The piston ring set is manufactured to OEM specifications, ensuring a perfect fit and reliable operation. It is suitable for engine rebuilds or maintenance, offering enhanced sealing performance and extended engine life. Compatible exclusively with the Suzuki RM125 model from 1977.

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Buy on eBay ($10.88)
5
NO DESCRIPTION AVAILABLE | C; OS:0.25 FROM 12140-41640

NO DESCRIPTION AVAILABLE | C; OS:0.25 FROM 12140-41640

eBay Preferred
OEM Ref: 12140-41660-025
Also fits 3 other vehicles
NO DESCRIPTION AVAILABLE | C; OS:0.25 FROM 12140-41640

This genuine OEM piston ring set is designed specifically for the 1977 Suzuki RM125 motorcycle. Manufactured by Suzuki, it ensures precise fitment and optimal engine performance for restored or vintage RM125 models. The set includes all necessary components for a complete piston ring replacement, maintaining factory specifications for reliable operation.

Each ring is precision-engineered to meet original equipment standards, providing consistent compression and minimizing blow-by. This new old stock (NOS) part is ideal for collectors, restorers, or mechanics requiring authentic Suzuki components for RM125 engine rebuilds. The part number 12140-41660-025 guarantees compatibility with 1977 RM125 models only.

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RING SET, PISTON | B; FROM 12140-41630

This is a genuine OEM Suzuki RM 125 standard ring set designed for models produced between 1975 and 1978. The ring set ensures optimal compression and engine performance by maintaining proper cylinder sealing and reducing oil consumption. Compatible exclusively with the Suzuki RM 125 Standard model, it restores factory specifications for reliable operation.

Part number 12140-41660 guarantees authenticity and direct fitment for the specified years. Engineered to meet Suzuki's original standards, these rings provide durability and consistent performance in high-stress racing or recreational applications.

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RING SET, PISTON | C; OS:0.5

This NOS (New Old Stock) piston ring set is designed for Suzuki RM125 models produced between 1977 and 1980. Engineered for high-performance applications, the set includes oversized .50 rings to accommodate bore enlargements or wear compensation, ensuring optimal compression and combustion efficiency.

Constructed from premium cast iron, these piston rings provide superior durability and resistance to wear under extreme operating conditions. The set is manufactured to exact OEM specifications for a precise fit, maintaining engine integrity and performance. Each ring is precision-ground to meet strict tolerances for consistent sealing and reduced oil consumption.

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RING SET, PISTON | C; OS:0.25

This piston ring set is precision-engineered for the Suzuki RM125 models produced between 1976 and 1980. Designed to provide optimal compression and reduced blow-by, this set ensures consistent performance and longevity for your motorcycle's engine. The 0.25 mm oversize specification makes it compatible with rebuilt or worn cylinders, restoring factory-like compression and power output.

The rings are manufactured from high-quality cast iron, offering excellent wear resistance and durability under high-stress conditions. Each ring is precisely machined to meet original equipment specifications, ensuring a perfect fit and reliable operation. Suitable for both stock and performance applications, this piston ring set is a critical component for maintaining engine efficiency and power in your RM125.

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RING SET, PISTON | C

This high-quality piston ring set is designed specifically for Suzuki RM125 models manufactured between 1976 and 1980. Engineered to meet OEM specifications, it ensures optimal engine performance and longevity by providing a precise 0.25 mm oversize fit for improved sealing and reduced blow-by.

The set includes one piston ring, part number 12140-41310-025, and is manufactured to exacting standards for durability and consistent performance. Ideal for maintenance or rebuild applications, this piston ring set restores compression and contributes to smoother engine operation.

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PIN, PISTON | B,C

Genuine Suzuki OEM Piston Pin (Part #12151-39300) is precision-engineered for optimal performance in compatible Suzuki engine models. Constructed from high-grade steel alloy, this piston pin ensures durability and reliable operation under high-pressure conditions, maintaining optimal clearance for smooth reciprocating motion within the piston assembly.

Designed to meet or exceed OEM specifications, this piston pin features a precise outer diameter of 22.0 mm and an inner diameter of 12.0 mm, providing an exact fit for precise engine timing and reduced wear. The pin length measures 55.8 mm, ensuring compatibility with specified cylinder bore dimensions. Ideal for replacement or maintenance applications, this component delivers consistent performance and longevity in demanding automotive environments.

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CIRCLIP | B,C

Engineered to meet the highest standards of durability and performance, the NOS Genuine Suzuki 09381-14001 Snap Ring is designed for precision applications. Constructed from premium alloy steel, this snap ring provides reliable retention and resistance to vibration and thermal cycling, ensuring consistent operation in demanding automotive environments.

Installation is straightforward with a standard snap ring tool, allowing for rapid replacement or upgrade in both production and aftermarket settings. The component is fully compatible with Suzuki models requiring the 09381-14001 specification, delivering a seamless fit and optimal load distribution.

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ROLLR BRG,14X18 | B,C

This genuine OEM Suzuki bearing assembly, part number 09263-14022, is designed for precise rotational support in compatible drivetrain applications. The bearing features a 14mm inner diameter, 18mm outer diameter, and is manufactured to meet Suzuki's strict quality control standards for durability and performance.

Engineered for direct fitment in specified Suzuki models, this bearing ensures optimal load distribution and reduced friction. The part is supplied as a complete assembly, including necessary seals and mounting components, for streamlined installation and long-term reliability.

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CONNECTING ROD | B,C

This OEM-grade Suzuki connecting rod, part number 12161-39300, is precision-engineered for optimal performance in compatible motorcycle models. Designed for durability and high load-bearing capacity, it ensures precise piston-to-crankshaft synchronization, enhancing engine efficiency and power delivery. The connecting rod is manufactured to meet strict OEM standards, guaranteeing a perfect fit and seamless integration with Suzuki’s AC100, TM100, GT250, RM100, RM125, and TS125 engines.

Constructed from high-quality alloy steel, this connecting rod features a forged design for superior strength and fatigue resistance. Its precise machining and balanced weight distribution contribute to reduced vibration and improved engine longevity. Ideal for both stock performance maintenance and performance upgrades, this component is an essential replacement part for optimal engine operation.

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Buy on eBay ($40.76)
THRUST WASHER | B,C; 19x32x1

This genuine Suzuki OEM washer motor, part number 09160-19001, is a factory-original component designed for use in compatible Suzuki motorcycles and ATVs. Manufactured to Suzuki's stringent quality standards, this washer motor ensures reliable operation and precise fluid delivery for optimal cleaning performance. The unit is an exact match for OEM specifications, providing seamless integration and durability.

Constructed with high-quality materials, this washer motor delivers consistent performance under standard operating conditions. It is recommended for replacement in models requiring this specific part number to maintain system integrity and functionality. Packaged as a new, unused component, this genuine Suzuki part is ready for direct installation.

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PIN, CRANK | B,C

The genuine Suzuki Crankshaft Pin 12211-48001 is an OEM-quality component engineered for direct replacement in compatible Suzuki engines. Designed to maintain precise crankshaft alignment, this pin ensures optimal engine performance and durability under standard operating conditions.

Crafted from high-grade alloy steel, the pin meets Suzuki’s strict manufacturing standards for strength and dimensional accuracy. Compatible with select Suzuki models, installation requires proper alignment and torque specifications to guarantee proper fitment and functionality. Always verify application compatibility prior to replacement.

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Buy on eBay ($50.59)
BEARING | B,C

High-quality bearing replacement for Suzuki RN models, specifically designed for applications requiring dimensions 19X25X16. Engineered with durable materials to ensure reliable performance and extended service life in marine and boat equipment. This bearing is a direct-fit solution, optimized for precise installation to maintain optimal engine and equipment functionality.

Manufactured to meet strict quality standards, the bearing is included as depicted in the product images. To ensure compatibility with your vehicle or equipment, verify the model number and cross-reference the product specifications before purchasing.

Specifications

  • 0: For Suzuki RN 19X25X16 BRG 09263-19009
  • 1: RN 19X25X16 BRG 0926319009 designed for precise fit and durability in vehicle applications.
  • 2: materials reliable performance and longevity, meeting stringent quality for optimal functionality.
  • 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.
Exclusive Amazon Prime Stock

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CRANKSHAFT, LH | B,C

The Suzuki Crankshaft LH (Part No. 12260-41610) is an OEM genuine replacement component designed for high-performance engine applications. Precision-engineered from high-grade steel alloy, this crankshaft ensures optimal durability and smooth operation under demanding conditions. It features a balanced design to minimize vibrations and maximize power transfer efficiency.

Specifications include a stroke length of 48.0 mm and a journal diameter of 38.0 mm. The crankshaft is compatible with select Suzuki models and meets strict OEM quality standards for fit, form, and function. Installation requires professional expertise to maintain engine integrity.

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Buy on eBay ($120.00)
Amazon Listing
Amazon listing photo

This genuine Suzuki OEM bearing ensures optimal performance and reliability for your Suzuki RG500 G & CH motorcycle. Manufactured to meet strict Japanese standards, this bearing delivers consistent performance under demanding conditions.

Key specifications include a 22 mm inner diameter, 56 mm outer diameter, and 16 mm width, with part numbers 09262-22025-000 and 09262-22025. Verify compatibility by matching the part number or providing your vehicle identification number (VIN) to confirm fitment.

  • 0: This is a genuine Japanese part
  • 1: For Suzuki RG500 G & CH Bearing 22X56X16 09262-22025-000
  • 2: Part number: 09262-22025
  • 3: Please verify the compatibility before making a purchase
  • 4: To ensure fitment, match the part number or provide us your VIN
View on Amazon ($103.04) →
eBay Listing
eBay listing photo

The Suzuki OEM crankshaft and transmission bearing is engineered for reliable performance in the RM125 model. Constructed to meet original equipment specifications, this component ensures proper alignment and smooth operation of the engine's rotating assembly.

Designed for direct replacement, the bearing integrates seamlessly with existing hardware, providing durability and resistance to wear under demanding riding conditions. It is suitable for professional maintenance and service applications.

View on eBay ($70.00) →
BEARING, LH | B,C; 25x52x15

This genuine Suzuki RM125 PE175 left bearing is an original equipment manufacturer (OEM) part designed for precise fitment and reliable performance. Measuring 25mm x 52mm x 15mm, the bearing meets exacting OEM specifications for dimensional accuracy and load capacity. It is part number 09262-25070-0A0, ensuring compatibility with Suzuki RM125 and PE175 models equipped with this bearing configuration.

Constructed for durability, this new old stock (NOS) bearing is manufactured to original Suzuki standards, providing smooth operation in critical drivetrain components. The bearing is sealed to prevent contamination and is ready for immediate installation, maintaining the integrity of the vehicle's suspension or steering system as originally designed.

eBay Motors Stock Available

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Buy on eBay ($35.98)
OIL SEAL, LH | B,C; 24.2x44x7

The Suzuki Crankshaft Flywheel Mag Seal 09283-25066 is a precision-engineered sealing component designed for optimal engine performance in select Suzuki motorcycle models. This mag seal ensures a reliable barrier between the engine’s internal components and external contaminants, reducing the risk of oil leaks and maintaining proper lubrication efficiency. Constructed from high-quality materials, it provides durability and long-lasting performance under demanding operating conditions.

Compatible with Suzuki models including the TS, TC, TM, and RM series for engine displacements of 100cc, 125cc, and 185cc, this mag seal is a critical replacement part for maintaining factory specifications. Its precise fitment guarantees compatibility, ensuring seamless integration with the crankshaft and flywheel assembly. Designed for direct replacement, it maintains OEM performance standards without the need for modifications.

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Buy on eBay ($13.25)
GEAR, PRIMARY DRIVE | B,C; NT:18

This NOS (New Old Stock) Suzuki OEM primary drive gear is a genuine replacement part designed for compatibility with the RM125 (1977-1978) and RM100 (1978-1981) models. Manufactured to original specifications, it ensures precise fitment and reliable performance in motorcycle drivetrain systems. The gear is constructed from high-strength steel, providing durability and resistance to wear under operational stress.

Part number 21111-41301 is recommended for applications requiring authentic Suzuki components. This primary drive gear maintains proper gear alignment and torque transmission, critical for smooth engine operation. Ideal for restoration projects or routine maintenance, this OEM part delivers the same performance and reliability as the original equipment.

eBay Motors Stock Available

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Buy on eBay ($26.90)
WASHER | B,C

The **OEM Suzuki Washer 09164-16002** is a precision-engineered replacement component designed for seamless installation on compatible Suzuki models. Manufactured to stringent quality standards, this washer ensures optimal sealing and durability in applications requiring reliable fluid or air management.

Key specifications include a **nominal diameter of 16.0mm (0.630 in)** and a **thickness of 2.0mm (0.079 in)**, ensuring precise compatibility with original equipment specifications. Engineered from high-quality materials, this washer delivers consistent performance and long-term reliability in demanding automotive environments.

eBay Motors Stock Available

Includes verified-seller guarantees and 30-day money-back protection.

Buy on eBay ($2.75)
Exact factory OEM # 12200-41610 may be temporarily out of stock in official store listings.
High Demand Part
Search Aftermarket / Compatible Fits

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Search Live Auctions & Used OEM Stock

Find New-Old-Stock (NOS), open-box deals, or verified salvage teardown parts.

Search Live Listings on eBay →
Exact factory OEM # 12220-41610 may be temporarily out of stock in official store listings.
High Demand Part
Search Aftermarket / Compatible Fits

Looking for a direct-fit replacement from a compatible aftermarket brand?

Browse Amazon Compatible Parts →
Search Live Auctions & Used OEM Stock

Find New-Old-Stock (NOS), open-box deals, or verified salvage teardown parts.

Search Live Listings on eBay →

Crankshaft Rm125b — Frequently Asked Questions

What OEM parts are included in the Crankshaft Rm125b for the 1978 suzuki rm125?

The Crankshaft Rm125b for the 1978 suzuki rm125 includes 28 individual OEM components, each listed below with its exact OEM part number.

How much does the Crankshaft Rm125b cost for the 1978 suzuki rm125?

Individual components in this assembly currently range from $1.17–$120.00, based on live Amazon and eBay listings. See the price comparison below for each part.

Will these OEM parts fit other 1978 suzuki rm125 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 NO DESCRIPTION AVAILABLE | B; OS:0.5 on the 1978 suzuki rm125?

The OEM part number for the NO DESCRIPTION AVAILABLE | B; OS:0.5 (part of the Crankshaft Rm125b assembly) on the 1978 suzuki rm125 is 12110-41311-050.

Does OEM part 12110-41311-050 fit the 1978 suzuki rm125?

Yes — OEM 12110-41311-050 is listed as the NO DESCRIPTION AVAILABLE | B; OS:0.5 for the 1978 suzuki rm125 (1978), part of the Crankshaft Rm125b assembly.

Which parts are included in the Crankshaft Rm125b?

NO DESCRIPTION AVAILABLE | B; OS:0.5, NO DESCRIPTION AVAILABLE | B, NO DESCRIPTION AVAILABLE | B; OS:0.25, NO DESCRIPTION AVAILABLE | B; OS:0.5; FROM 12140-41650, NO DESCRIPTION AVAILABLE | C; OS:0.25 FROM 12140-41640, RING SET, PISTON | B; FROM 12140-41630, RING SET, PISTON | C; OS:0.5, RING SET, PISTON | C; OS:0.25, and 20 more — see the full list below.

What other vehicles use OEM part number 12110-41311-050?

OEM 12110-41311-050 (NO DESCRIPTION AVAILABLE | B; OS:0.5) also fits 5 other vehicles in this catalog, including 1975 suzuki rm125 — Crankshaft Rm125b, 1976 suzuki rm125 — Crankshaft Rm125b, 1977 suzuki rm125 — Crankshaft Rm125b.

Cross-Marketplace Price Tracker
Compare total assembly price across Amazon Prime vs. eBay Certified Sellers.
Amazon Est. Total
$163.99
eBay Est. Total
$573.33