Due the high number of combinations for upper and lower headsets PRO offers its upper and lower headsets separately. So you can arrange your own individual solution for your frame and fork.
The lower PRO IS headset with integrated cups comes with high quality double sealed cartridge bearings.
Reduction version for 1,5" frame and 1 1/8" steerer.
The delivery includes an ahead-cap, bolt and starnut.
describes the integrated 1.5" Ahead headset for 1 1/8" steerer. The S.H.I.S. denotation (see attachment) of the lower part offered here is IS52/30.
Construction type (Ahead/Thread): ahead
Included in delivery: lower headset with crown race
Material: aluminum, steel
Weight supplement: headset only - starnut, bolt, cap additional 25g - weighed by Bike24