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SWIFTFIXTOOLS OEM PARTS & HARDWARE DIRECTORY
MOTORCYCLE 100% Guaranteed Fitment

Crankshaft Rm100b C

Selected Vehicle
1978 suzuki rm100
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Quick answer: The Crankshaft Rm100b C for the 1978 1978 suzuki rm100 (MOTORCYCLE) consists of 26 OEM components. 17 are currently matched to live Amazon/eBay listings, priced from $2.75–$94.89.
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Showing 26 Components
1
PISTON *{B,C; OS:0.5}*

PISTON *{B,C; OS:0.5}*

eBay Preferred
OEM Ref: 12110-41630
Also fits 2 other vehicles
PISTON *{B,C; OS:0.5}*

Genuine OEM Suzuki piston designed for the RM100 model, providing reliable performance and durability. This piston features a .50mm oversize specification, ensuring a precise fit for rebored cylinders. The part number 12110-41610 corresponds to the standard bore variant, while 12110-41630 indicates the compatible oversized version.

Crafted to meet factory specifications, these pistons deliver optimal compression and power output for competitive or recreational riding. The included rings and pin ensure a complete assembly, reducing installation time and complexity. Suitable for high-performance applications requiring precision-engineered components.

eBay Motors Stock Available

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Buy on eBay ($14.00)
2
PISTON *{B,C; OS:0.25}*

PISTON *{B,C; OS:0.25}*

eBay Preferred
OEM Ref: 12110-41620
Also fits 2 other vehicles
PISTON *{B,C; OS:0.25}*

This Genuine Suzuki RM100 piston and crankshaft kit, part number 12110-41620, is engineered for optimal performance and durability in the RM100 motocross model. Designed with high-quality materials, this OEM replacement kit ensures precise tolerances and reliable operation under demanding conditions. Each piston and crankshaft assembly is manufactured to Suzuki's strict quality standards for seamless fitment and long-lasting service life.

The kit includes a piston with a diameter of 50.00 mm, a crankshaft featuring a stroke of 42.0 mm, and all necessary components for proper installation. Engineered for the RM100's 99cc displacement, this kit restores original factory specifications, maintaining consistency with Suzuki's performance benchmarks. Ideal for routine maintenance or performance upgrades, this Genuine OEM component guarantees compatibility and reliability.

eBay Motors Stock Available

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Buy on eBay ($11.44)
PISTON *{B,C}*

Genuine OEM replacement piston and ring set designed for the 1976-1978 Suzuki RM100B motorcycle. This set includes the piston (Part #12110-41610-025) and corresponding rings (Part #12140-41610), ensuring precise fitment and factory-grade performance for rebuilt or stock engines.

Manufactured to original equipment specifications, this piston set is constructed from high-grade aluminum alloy with a forged design to withstand high RPM operation and maintain dimensional stability. The ring set features three-piece construction, optimized for gas sealing and oil control in two-stroke engine applications. Includes all necessary components for installation.

eBay Motors Stock Available

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

Buy on eBay ($19.99)
4
RING SET, PISTON *{B,C; OS:0.5}*

RING SET, PISTON *{B,C; OS:0.5}*

eBay Preferred
OEM Ref: 12140-41750
Also fits 2 other vehicles
RING SET, PISTON *{B,C; OS:0.5}*

This high-performance piston ring set is engineered for 1976 to 1981 Suzuki RM100 models. Designed for a 0.50mm oversize, it provides optimal compression and engine longevity, ensuring reliable performance in competitive and recreational riding conditions.

The ring set includes all necessary components for a complete installation. Precision-machined from high-grade materials, these rings offer superior durability and resistance to wear. Compatible with the RM100 engine, this OEM-quality set meets or exceeds original equipment specifications for a seamless fit and function.

eBay Motors Stock Available

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

Buy on eBay ($10.88)
RING SET, PISTON *{B,C}*

Genuine NOS Suzuki RM100 Piston Rings (Part #12140-41610-025) are precision-engineered replacement components designed for restoration or maintenance of 1977–1981 RM100 models. Manufactured to original equipment specifications, these piston rings ensure optimal sealing performance, compression retention, and engine longevity in two-stroke applications.

Each set includes high-quality cast iron rings engineered for durability under high RPM conditions. Compatible exclusively with Suzuki RM100 models produced during the specified production years, these rings provide a direct fitment solution for stock or modified engines. Sold individually for precise replacement, this part maintains factory OEM standards for peak power delivery and reduced oil consumption.

eBay Motors Stock Available

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

Buy on eBay ($16.92)
BEARING *{B,C}*

This genuine Suzuki OEM bearing is designed for select models produced between 1969 and 1984, ensuring precise fitment and optimal performance. Compatible with the PE175 (1978-1984), T350 (1969-1972), and RM125 (1976) motorcycles, it meets the exact specifications required for these models.

Manufactured to Suzuki's stringent quality standards, this new old stock (NOS) bearing delivers reliable durability and smooth operation in critical drivetrain and wheel applications. Part number 09263-16005 guarantees authenticity and compatibility with genuine Suzuki components.

eBay Motors Stock Available

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

Buy on eBay ($36.95)
ROD, CONNECTING *{B,C}*

Genuine OEM connecting rod for SUZUKI RM100, RM125 (1975–1978), and RV125 (1975) models. This new-old-stock (NOS) replacement part ensures precise fitment and optimal performance in high-performance applications. Machined to exacting tolerances, the connecting rod facilitates smooth piston movement and maintains engine efficiency.

Designed for durability and longevity, the part is manufactured to SUZUKI’s original equipment specifications, ensuring compatibility with stock configurations and aftermarket upgrades. The connecting rod, bearing part number 12161-41301, is an essential component for maintaining engine integrity and power delivery in classic SUZUKI motocross and enduro models.

eBay Motors Stock Available

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Buy on eBay ($79.99)
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.

eBay Motors Stock Available

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Buy on eBay ($8.88)
PIN, CRANK *{B,C}*

This Genuine Suzuki OEM Piston Pin is designed for direct replacement in compatible motorcycle engines, ensuring optimal performance and durability. Manufactured to Suzuki's stringent quality standards, this piston pin is an exact fit for the specified engine models, maintaining factory specifications for seamless installation and operation.

The piston pin features precision-machined construction for high-strength and wear resistance, guaranteeing reliable power transfer between the piston and connecting rod. It is a direct replacement part, eliminating the need for modifications or adjustments during installation. Engineered for long-lasting performance, this component is essential for maintaining engine efficiency and reliability in demanding riding conditions.

eBay Motors Stock Available

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

Buy on eBay ($18.88)
CRANKSHAFT, RH *{B,C}*

This NOS (New Old Stock) genuine Suzuki crankshaft is an OEM part designed for the RM125 (1975-1976) and RM100 (1976-1978) models. Engineered to exacting Suzuki specifications, it ensures precise fitment and optimal performance for restored or classic Suzuki RM-series motorcycles. The crankshaft is manufactured to original equipment standards, delivering durability and reliability for demanding riding conditions.

Part number 12220-41300 guarantees authenticity and compatibility with your RM125 or RM100 project. This crankshaft is ideal for engine rebuilds, performance upgrades, or replacement of worn components. Packaged in protective OEM-style packaging, it arrives ready for installation in your motorcycle's crankcase assembly.

eBay Motors Stock Available

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

Buy on eBay ($94.89)
BEARING, RH *{B,C; 22x56x16}*

This high-quality bearing set is designed for Suzuki RM models including RM100, RM125, RM370, RM400, RM465, SP500, and TM variants. It includes the following bearings: 09262-22012 and 09262-22025. These components are precision-engineered to ensure smooth operation and durability under demanding riding conditions.

Constructed from high-grade steel, the bearings feature sealed construction to prevent contamination from dirt and moisture. The set is ideal for routine maintenance or replacement in response to wear, ensuring optimal performance of the motorcycle's suspension and steering systems. Compatible with specified models, these bearings meet OEM specifications for a precise fit and reliable operation.

eBay Motors Stock Available

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

Buy on eBay ($16.50)
BEARING, LH *{B,C; 25x52x15}*

This genuine NOS (New Old Stock) crankshaft bearing is designed for select Suzuki RM100 models from 1975 to 1978 and RM125 models from 1975 to 1978. Precision-engineered to meet OEM specifications, it ensures optimal fitment and durability in high-performance motorcycle applications.

Manufactured to strict tolerances, this bearing reduces friction and supports the crankshaft assembly for smooth operation. The part number 09262-25048 corresponds to the exact replacement component for these vintage Suzuki models, offering reliable performance in classic motorcycle restoration or repair projects.

eBay Motors Stock Available

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

Buy on eBay ($21.22)
OIL SEAL, LH *{B,C; 24.2x44x7}*

This right-hand crank engine oil seal is specifically designed for Suzuki GP100 and GP125 models, ensuring reliable sealing performance and extended engine longevity. Engineered to exact OE specifications, the seal provides a precise fit, preventing oil leakage and maintaining proper lubrication within the crankcase. The high-quality rubber compound resists heat, wear, and degradation under normal operating conditions, delivering consistent performance in demanding environments.

Compatible with Suzuki part numbers 09283-25037, -25066, and 574463, this oil seal is essential for routine maintenance or repair tasks. Its durable construction supports optimal engine efficiency by maintaining proper oil pressure and minimizing friction between moving components. Designed for right-hand crank applications, this seal is a direct replacement for OEM parts, ensuring compatibility and reliability.

eBay Motors Stock Available

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

Buy on eBay ($12.95)
GEAR, PRIMARY DRIVE *{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

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

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)
18

RING SET, PISTON *{B,C; OS:0.25}*

Exact OEM Stock Low
OEM Ref: 12140-41740
Also fits 2 other vehicles
Exact factory OEM # 12140-41740 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?

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Search Live Auctions & Used OEM Stock

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

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Exact factory OEM # 12151-41600 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 →
Exact factory OEM # 12200-41301 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 →
Exact factory OEM # 09263-19007 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 →
Exact factory OEM # 12260-41301 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 →
Exact factory OEM # 21111-41300 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 Rm100b C — Frequently Asked Questions

What OEM parts are included in the Crankshaft Rm100b C for the 1978 suzuki rm100?

The Crankshaft Rm100b C for the 1978 suzuki rm100 includes 26 individual OEM components, each listed below with its exact OEM part number.

How much does the Crankshaft Rm100b C cost for the 1978 suzuki rm100?

Individual components in this assembly currently range from $2.75–$94.89, based on live Amazon and eBay listings. See the price comparison below for each part.

Will these OEM parts fit other 1978 suzuki rm100 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 PISTON *{B,C; OS:0.5}* on the 1978 suzuki rm100?

The OEM part number for the PISTON *{B,C; OS:0.5}* (part of the Crankshaft Rm100b C assembly) on the 1978 suzuki rm100 is 12110-41630.

Does OEM part 12110-41630 fit the 1978 suzuki rm100?

Yes — OEM 12110-41630 is listed as the PISTON *{B,C; OS:0.5}* for the 1978 suzuki rm100 (1978), part of the Crankshaft Rm100b C assembly.

Which parts are included in the Crankshaft Rm100b C?

PISTON *{B,C; OS:0.5}*, PISTON *{B,C; OS:0.25}*, PISTON *{B,C}*, RING SET, PISTON *{B,C; OS:0.5}*, RING SET, PISTON *{B,C}*, CIRCLIP *{B,C}*, BEARING *{B,C}*, ROD, CONNECTING *{B,C}*, and 18 more — see the full list below.

What other vehicles use OEM part number 12110-41630?

OEM 12110-41630 (PISTON *{B,C; OS:0.5}*) also fits 2 other vehicles in this catalog, including 1976 suzuki rm100 — Crankshaft Rm100b C, 1977 suzuki rm100 — Crankshaft Rm100b C.

Cross-Marketplace Price Tracker
Compare total assembly price across Amazon Prime vs. eBay Certified Sellers.
Amazon Est. Total
—
eBay Est. Total
$410.07