Bottom External Headset

Code:HS65
Technical Descripiton(S.H.I.S): EC34/30
Bottom head tube inside diameter: 34mm
Crown race seat diameter: 30mm
Cartridge Bearing Size O30.15xO39x6.5x45˚x45˚
Weight: 28grams

Code:HS85
Technical Descripiton(S.H.I.S): EC34/30
Bottom head tube inside diameter: 34mm
Crown race seat diameter: 30mm
Cartridge Bearing Size O30.15xO41x6.5x45˚x45˚
Weight: 36grams

Code:HS110B
Technical Descripiton(S.H.I.S): EC34/30
Bottom head tube inside diameter: 34mm
Crown race seat diameter: 30mm
Cartridge Bearing Size O30.15xO41x6.5x45˚x45˚
Weight: 44grams

Code:HS120
Technical Descripiton(S.H.I.S): EC49/40
Bottom head tube inside diameter: 49mm
Crown race seat diameter: 39.8mm
Cartridge Bearing Size O39.8xO52x7x45˚x45˚
Weight: 62grams