JIMS Pinion Gear Shaft for Harley Big Twin 1954–1957 – Replaces OEM 24006-55 / 24006-54A / 24006-54

This JIMS pinion gear shaft is designed for Harley-Davidson Big Twin engines using early Panhead-style timing gear assemblies.

The pinion shaft supports and drives the timing gear set and is critical to maintaining correct cam timing and gear alignment. Proper shaft fit and finish are essential for long-term reliability during engine operation and rebuild work.

Designed for Big Twin models from 1954 through 1957, this shaft is intended for stock-style timing gear applications used on early Panhead engines.

This part replaces Harley-Davidson OEM 24006-55, 24006-54A, and 24006-54. Manufactured in the United States by JIMS. At Boomers Bike Shop, we stock internal engine components that fit correctly and are trusted for real Big Twin engine builds.

Fits Harley-Davidson Models:

Big Twin: 1954–1957

⚠️ Designed for stock-style timing gear and pinion assemblies. Verify application during engine assembly.