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

The JIMS Crankcase Bushing 24599-40 is engineered for optimal performance and reliability, ensuring your engine runs smoothly with enhanced oil flow. Proudly made in the U.S.A., this bushing is designed to meet the highest standards of quality and...

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...

Enhance your motorcycle's performance with the JIMS Piston Oiling Jet Kit 1905, specifically engineered for upgraded stroker flywheels. This kit ensures optimal lubrication for both stock and high-performance flywheel assemblies, providing 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 1930-1954 24001-30 Upgrade your vintage motorcycle with the JIMS Sprocket Shaft, expertly crafted for models between 1930 and 1954. Made in the U.S.A., this high-quality replacement part ensures durability and optimal performance,...

Upgrade your Big Twin motorcycle with the JIMS Crankcase Bushing 24599-58B, designed for optimal performance and durability. This high-quality bushing ensures 360° oiling, significantly enhancing engine efficiency and longevity. Proudly made in the U.S.A...

Upgrade your motorcycle's performance with the JIMS Right-Side Crankcase Bearing Race 24585-57. Crafted in the U.S.A., this high-quality bearing race ensures optimal fit and longevity, providing reliable support for your engine components. 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...