Clutch Stage6 Sport PRO (107mm) Nitro / Booster / Runner / Speedfight / GY6

Details
Stage6 have extended their clutch range to include the Sport PRO version. This three-shoe clutch can be adjusted by using different clutch springs and choosing between two lock-in positions. Its beefed-up clutch shoes are held in place with a reinforcing ring and forged screw-in bolts that are superior to the riveted studs commonly used in conventional clutches, as these tend to fly out.
The Stage6 Sport PRO is a favourable alternative to other popular sport clutches. With powerful engines, we still recommend going for the Stage6 Torque Control though.
Attention: Since 1998, Minarelli engines (Aprilia, Yamaha, ...) come with new clutches. Please check whether your original clutch has 2 (d = 105mm) or 3 (d = 107mm) shoes. You can also measure the inner diameter of the clutch bell, which should be 107mm if you want to use this clutch. If it is 105mm, you can simply convert to a 107mm clutch by additionally installing a 107mm clutch bell!
Note: we recommend to use the spring seat (included) for the torque spring for Minarelli engines only (Aerox, Booster, Chinese scooters etc.). It is not recommended or necessary for Peugeot, Piaggio and GY6 4-stroke engines.