Wheels Manufacturing BB30 Bottom Bracket Adaptor for Hollowtech II Cranks ModelNumber=K4088 High-Carbon Ferrule uses best-quality steel

High-Carbon Ferrule uses best-quality steel and increased thickness for improved durability over standard ferrules

Tubeless ready rims

For Nordic Use

sold in pairs (Right/Left)

damper seal head Boxxer Team/WC

Wheels Manufacturing BB30 Bottom Bracket Adaptor for Hollowtech II Cranks ModelNumber=K4088 High-Carbon Ferrule uses best-quality steelWheels Manufacturing BB30 Bottom Bracket Adaptor for Hollowtech II Cranks. Machined engineering grade Delrin inserts for adapting bottom brackets to a different type of crankset spindle. TECH SPECS BB Frame Interface BB30 BB Shell Width (mm) 68 BB Shell Width (mm) 73 Weight 48 Spindle Interface Type Hollowtech II