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Application: Cross Country
Upper Cup: 1 1/8"
Lower Cup: 1.5"
Steerer Tube: 1 1/8" -1.5" tapered
Design: zero stack (ZS)
Material: aluminium (7075), composite (NBR)
Bearings: angular contact ball, steel
Upper Insert Depth: 11 mm
Lower Insert Depth: 11 mm
Upper Stack Height: 3.5 mm
Lower Stack Height: 2.5 mm
Upper Outer Diameter: 44 mm
Upper Inner Diameter: 28.6 mm
Lower Outer Diameter: 56 mm
Lower Inner Diameter: 40 mm
Seals: radial shaft seal, O-ring
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).
Manufacturer Part Number:
7082 + 7086
- 1 x Reset Racing Flatstack A upper cup, incl. stainless steel bearings
- 1 x Reset Racing Flatstack 4 lower cup, incl. stainless steel bearings
- 1 x Reset Racing Ahead cap
- 1 x star nut with aluminium bolt
- 1 x undercover
- 1 x compression ring
- 1 x O-ring
- 1 x crown race
- 2 x O-rings
- black/ZS44/28.6 - ZS56/40: 116 g