Harley Crankcases and Parts

TRASK Breather Kit Big Twin DM-1999Machined T-6061 billet aluminum construction, Helps oil drain more efficiently into the rocker, Reduces oil misting coming from the engine breathers, Made in the U.S.A.

COLONY Acorn Front Belt Drive Pulley Nut 7816-1Chrome front pulley nut for open primary belt drive applications, Made in the U.S.A.

FEULING OIL PUMP CORP. Support Plate Twin Cam 8000Feuling® HIGH FLOW cam plates for T/C® engines increase engine oil flow and volume by enlarging the oil pump reservoirs and critical oil passages, including matching the oil port holes throughout the cam...

EASTERN MOTORCYCLE PARTS Crankpin Nut/Lock Kit A-23966-78Includes nuts, locks, and screws, Made in the U.S.A.

EASTERN MOTORCYCLE PARTS Flywheel Thrust Washer Set 11 pack A-24100-SETSet includes flywheel thrust washers in 11 different thicknesses, ranging from .060" to .102", Made in the U.S.A.

EMGO Crankcase Filter Kit 14-20910High-quality crankcase breathers and filters from Emgo

EMGO Replacement Filter Chrome 14-20905For use only with crankcase vent filter

EMGO Crankcase Filter Kit 14-20900High-quality crankcase breathers and filters from Emgo

Introducing the JIMS Pinion Gear Shaft for Big Twin motorcycles, a premium quality component crafted in the U.S.A. Designed for durability and precision, this pinion gear shaft ensures optimal performance and reliability in your engine. Upgrade your ride...

JIMS Pinion Shaft Big Twin 24006-87 Elevate your engine's performance with the JIMS Pinion Shaft Big Twin 24006-87, expertly crafted for precision and durability. Made from high-quality domestic steel, this pinion shaft is designed to ensure optimal...

JIMS Pinion Gear Shaft for Big Twin 24007-39 Experience unparalleled performance with the JIMS Pinion Gear Shaft, specifically designed for Big Twin models. Crafted in the U.S.A., this premium component ensures durability and precision, making it an...

JIMS Crank Pin XL 23960-54 Upgrade your engine's performance with the JIMS Crank Pin XL 23960-54, a high-quality replacement part designed to meet or exceed OEM specifications. Proudly made in the U.S.A., this crank pin ensures durability and reliability...

JIMS Pinion Gear Shaft 24006-58 Enhance the performance of your motorcycle with the JIMS Pinion Gear Shaft 24006-58, meticulously crafted in the U.S.A. Designed for durability and precision, this pinion gear shaft ensures optimal functionality and...

JIMS Pinion Gear Shaft 24006-73 Elevate your motorcycle's performance with the JIMS Pinion Gear Shaft 24006-73, expertly crafted in the U.S.A. This high-quality component ensures optimal durability and precision for a smooth ride. Designed for...

JIMS Sprocket Shaft Big Twin 23909-80 Experience superior performance and durability with the JIMS Sprocket Shaft, specifically designed for Big Twin models. Crafted in the U.S.A., this precision-engineered component ensures a perfect fit and reliable...

JIMS Pinion Gear Shaft Big Twin 24006-80/83 Upgrade your Big Twin motorcycle with the JIMS Pinion Gear Shaft, designed for models from 1980 to 1983. Crafted with precision in the U.S.A., this durable component ensures optimal performance and reliability,...

JIMS Crank Pin Big Twin 23961-413 Upgrade your motorcycle's performance with the JIMS Crank Pin Big Twin 23961-413, a high-quality replacement part designed to meet or exceed OEM specifications. Manufactured in the U.S.A., this crank pin ensures...

JIMS Crank Pin Big Twin 23961-80A3 Upgrade your engine's performance with the JIMS Crank Pin Big Twin 23961-80A3, a premium replacement part designed to meet or exceed OEM standards. Crafted in the U.S.A., this crank pin ensures durability and...

The JIMS Pinion Shaft Nut is an essential component designed for optimal performance in your motorcycle's drivetrain. Engineered with precision, this heavy-duty nut ensures a secure fit on the flywheel-side of the pinion shaft, providing reliability and...

Upgrade your motorcycle's performance with the JIMS Sprocket Shaft Nut 24017-80, designed for durability and precision. This heavy-duty nut securely fits the flywheel side of the sprocket shaft, ensuring optimal functionality and reliability. Crafted in...