- 100 day return period
- Online since 1998
- Trusted Shop 4.9 / 5.00
Application: Road, Cross Country, City
Upper Bearings: 1 1/8"
Lower Bearings: 1.5"
Steerer Tube: 1 1/8” - 1.5" tapered
Design: integrated (IS)
Bearings: angular contact ball (45°/ 45° ACB, upper), angular contact ball (36°/ 45° ACB, lower)
Upper Stack Height: 15.5 mm
Lower Stack Height: 0.9 mm
Upper Outer Diameter: 42 mm
Upper Inner Diameter: 28.6 mm
Lower Outer Diameter: 52 mm
Lower Inner Diameter: 40 mm
Seals: black seal
Top Cap: carbon, 15 mm
Standardized Headset Identification System (S.H.I.S.):
The Standardized Headset Identification System (S.H.I.S.) creates a common language for describing modern bicycle headsets. The system provides comprehensive and scalable headset fitment information in a standardized format; making it easy to communicate headset requirements based on frame and fork interfaces. The system addresses the critical interface dimensions required to fit a fork to a frame, as well as bearing location/cup type. To determine fit, four dimensions are needed: (1) stem-clamp diameter of fork, (2) crown-race seat diameter of fork, (3) head-tube top inside diameter, and (4) head-tube bottom inside diameter. Bearing location and cup-type are identified as (a) external cup (EC), (b) semi-integrated or zero stack (ZS), or (c) integrated (IS).
EC: Bearings contained within cups that are located outside of the frame (external cup).
ZS: Bearings contained within pressed-in cups where the cup and bearings rest inside the frame (zero stack).
IS: Bearings that fit directly into a bonded or machined interface that is integrated into the frame (integrated).
- 1 x FSA No.42 upper bearing
- 1 x FSA No.42 lower bearing
- 1 x FSA carbon headset cap
- 1 x compression ring
- 1 x FSA Ahead cap
- 1 x star nut with aluminium bolt
- 1 x crown race
-UD carbon / IS42/28.6 - IS52/40 : 91 g