Headset will allow you to alter your top-tube length by +/- 6mm.
Upper cup insertion depth: 11.5mm
Lower cup insertion depth: 11.5mm
Upper cup Stack height: 3.5mm - Total upper stack height including bearing cover: 9.5mm
Lower cup Stack height: 3.5mm
Upper Bearing: 41mm OD, 45 x 45 Degree AC sealed bearing
Lower Bearing: 52mm OD, 45 x 45 Degree AC sealed bearing
To suit standard 1 1/8" forks.
Proudly machined in the UK, anodised locally in black from 6082 T6 aluminium.
Split type 7075-T6 aluminium crown race for simple, tool free installation
Headset comes complete with top-cap (star-nut included), bearings and crown race - all parts required for fitment
SHIS Lower |
ZS56/40 |
Lower Cup |
52mm |
Misc |
6mm |
Headset Reach Adjustment |
6mm |
Upper Cup |
41mm |
Headset Type |
ZS External threadless |
Headset Weight |
140g |
Material |
7075-T6 Aluminum |
S.H.I.S. |
ZS56/28.6 | ZS56/40 |
Stack Height |
9.5 |
SHIS Upper |
ZS56/28.6 |
Bearing Grade |
ACB Sealed |
Steerer Tube |
1-1/8 |
Headset Position |
Complete |
Primary Color |
Black |