1.1/8", 36°×45° ACB

1.1/8" steerer

Alloy top cover

Upper: Forged alloy cup with ACB (blue seal)

Lower: 1.5" CNC machined alloy cup with ACB (blue seal)

Stack height: 16.9 + 2.9 = 19.8mm

Weight: 129.6g

Spares:

Upper Bearing: TH873 (160-1648)

Lower Bearing: TH073 (160-6761)

Crown Race: 1.1/8 (H6089, 160-5540)

Product Code: FSA.HS.SI.ORB.15E