Harley Crankcases and Parts

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...

JIMS Crank Pin XL 23960-80A3 Upgrade your engine's performance with the JIMS Crank Pin XL 23960-80A3, a premium replacement part designed to meet and exceed OEM specifications. Crafted with precision in the U.S.A., this crank pin ensures durability and...

JIMS Rod Race Set Big Twin 1046-36A Elevate your engine's performance with the JIMS Rod Race Set Big Twin 1046-36A, expertly crafted from premium 52100 aerospace-quality Timken® bearing stock. Designed and manufactured in the U.S.A., this rod race set...

JIMS Sprocket Shaft 1956-1964 24001-56 Enhance the performance of your classic motorcycle with the JIMS Sprocket Shaft, expertly crafted for models from 1956 to 1964. Made in the U.S.A., this durable component ensures reliability and longevity, making it...

JIMS Crankcase Bushing 24600-58B Enhance the performance and longevity of your engine with the JIMS Crankcase Bushing 24600-58B. Engineered for precision and durability, this bushing ensures optimal oil flow and reduces wear on critical components...

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...

The JIMS Gear-Side Pinion Shaft Nut 24022-90 is a high-quality replacement part designed specifically for precision performance in your motorcycle. With its durable construction and left-hand threads, this nut ensures a secure fit and reliable operation,...

Upgrade your motorcycle's performance with the JIMS Gear-Side Pinion Shaft Nut 24023-54. Designed with precision engineering, this nut ensures a secure fit and optimal function for your bike's gear system. Its durable construction and left-hand threads...

EASTERN MOTORCYCLE PARTS Dowel Pins A-16574-99Used in crankcase and motor for transmission case applications, Made in the U.S.A.

EASTERN MOTORCYCLE PARTS Bearing Spacers 5 pack A-9110High-quality OEM replacement components, Made in the U.S.A.

EASTERN MOTORCYCLE PARTS Bearing Spacers 5 pack A-9123High-quality OEM replacement components, Made in the U.S.A.

EASTERN MOTORCYCLE PARTS Bearing Spacers 5 pack A-9125High-quality OEM replacement components, Made in the U.S.A.

EASTERN MOTORCYCLE PARTS Bearing Spacers 5 pack A-9126High-quality OEM replacement components, Made in the U.S.A.

EASTERN MOTORCYCLE PARTS Bearing Spacers 5 pack A-9127High-quality OEM replacement components, Made in the U.S.A.

EASTERN MOTORCYCLE PARTS Bearing Spacers 5 pack A-9128High-quality OEM replacement components, Made in the U.S.A.

EASTERN MOTORCYCLE PARTS Bearing Spacers 5 pack A-9129High-quality OEM replacement components, Made in the U.S.A.

EASTERN MOTORCYCLE PARTS Bearing Spacers 5 pack A-9130High-quality OEM replacement components, Made in the U.S.A.