MCS Pinion Shaft Bearings

13 products — part of all Pinion Shaft Bearings

MCS pinion shaft bearings give Harley-Davidson engine builders the precision rolling element bearings needed to support the pinion shaft — the main crankshaft output component — within the right-side crankcase. The pinion shaft bearing takes the rotational load of the engine output at its most direct point, enduring high RPM, temperature cycling and the torsional shock of the Harley-Davidson V-twin firing pattern across the full service life of the engine. Worn pinion shaft bearings introduce runout into the crankshaft assembly, creating vibration and noise that is felt through the entire drivetrain and accelerates wear on adjacent components including the sprocket shaft and primary drive. MCS supply pinion shaft bearings to the dimensional specifications of Harley-Davidson Big Twin engines across the main model generations, with options covering both the inner and outer bearing positions in the right crankcase half. Iron City Motorcycles, an authorised Harley-Davidson dealer in Leeds, carries MCS pinion shaft bearings alongside a full engine rebuild and crankshaft components range. Browse the full MCS Pinion Shaft Bearings range below.