Clutch primary shaft bearing (Piaggio / Gilera 50cc-180cc 2T/4T)

Get rid of that annoying whine from the gearbox and keep your scooter running smoothly. This top-quality clutch primary shaft bearing is designed for scooters with Piaggio and Gilera engines. It ensures stable rotation of the clutch shaft (axle) on which the clutch bell is mounted, and flawless primary power transfer from the engine to the rear gearbox.

Due to constant heavy loads, especially when increasing the scooter's power (tuning to 70cc or upgrading to a performance clutch), the original gearbox bearings gradually wear out. The resulting play causes the gears to vibrate and wear unevenly and can damage other transmission components.

Key advantages and features of the bearing

• Top quality class (OEM standard): Made precisely to the Piaggio group's factory dimensions, so it fits perfectly into the original position without any modification to the crankcase or gearbox cover.

• Minimal friction and noise: Precision-ground balls ensure quiet gearbox operation even at extremely high revs.

• Maximum durability: Designed to run permanently in gearbox oil, with increased resistance to radial loads and temperature fluctuations.

• Versatile use: Ideal for both standard city scooters and powerful performance and racing projects (Sport, Mid-Race, High-End).

Technical data and compatibility

Depending on the production year and model of the Piaggio engine, this bearing fits into the engine crankcase or the gearbox cover, supporting the clutch shaft directly behind the clutch bell.

Parameter	Specification
Purpose	Clutch primary shaft bearing
Engine type	Piaggio Hi-PER2 / Hi-PER Pro / Leader / Quasar
Compatibility	2T and 4T engines (50cc - 180cc)
Cooling type	AC (air) / LC (liquid)

Model compatibility (most popular scooters):

• Gilera: Runner 50 (SP / Purejet), Runner 125/180 (FX/FXR 2T), Stalker, Ice, Storm, Typhoon.

• Piaggio: Zip 50 (2T/4T), Zip SP, NRG (MC2, MC3, Power DD/DT), Typhoon, Liberty, Fly, Beverly, Free.

• Vespa: ET2, ET4, LX 50, LXV, S 50, Primavera, Sprint.

• Aprilia: SR 50 R, SR Motard, Scarabeo, Sportcity (models with Piaggio engines from ~2003).