The FSA Impact Headset is a internal 1-1/8" black headset.
Key Features of the FSA Impact Interal 1-1/8 Headset Blac Camp/Dtgl Cmpt Hybrid Acb:
Campagnolo compatible
Alloy top cover
Patented alignment tip for increased durability and performance
7075 alloy crown race
Laser etched aluminum top cap
45/45 degree angular contact bearings
Impact Pro (HD4625) has stainless steel micro ACB (white seal)
Impact (HD4626) has serviceable hybrid ACB (yellow seal)
Compatible with most detanglers
Steerer Tube: 1-1/8" Threadless
Headset Type: Integrated/42.0mm OD/45 deg bearing (Hiddenset)
S.H.I.S Upper: IS42
S.H.I.S. Clamp Diameter: 28.6
S.H.I.S Lower: IS42
Crown Race: 30.0
Defined Color: Black
Color: Black
Stack Height: 0 mm
Bearing Type: Hybrid ACB
Material: Aluminum
Weight: 64.0 g
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Orders to: PO Boxes, APOs, Hawaii, Alaska and Orders Under $50.00,
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International Orders: Please refer to the International Shipping Page