Wossner 2-Stroke Ringset - 43.50mm Tyre Width Imperial_4.50 Inch The 10S is the upgraded

The 10S is the upgraded version of Sena’s flagship Bluetooth headset for motorcycle helmets

Includes advance mechanism

(Emergency Quick Release System) for easy helmet removal in case of an accident

Outside Length: 243

The heavy-duty canister is engineered to be exceptionally durable

Wossner 2-Stroke Ringset - 43.50mm Tyre Width Imperial_4.50 Inch The 10S is the upgradedWossner is Germany's finest aftermarket forged piston and rod manufacturer and have over 25 years of experience in the high performance racing industry. Top European racers and FIM World Champions rely on Wossner for only the best pistons, rods, and customer service. Diameter: 43. 5mm Note: This includes ONE Piston Ring and some fitments may require two