FIRST Spurs SI 1-1/8" IS41 Headset Handmade allow for unmatched customisation specific

allow for unmatched customisation specific to the users needs

The common issue with most track nuts is that the thread starts too far from the flange leading to poor engagement on wheels where axle length is an issue due to the frame

The surfaces of their crankset is precisely machined to prevent any chainring runouts

70mm length for rim profiles between 31 and 60 mm

Colours: Silver

FIRST Spurs SI 1-1/8" IS41 Headset Handmade allow for unmatched customisation specificINCLUDES 2 x Sealed Bearings (Paired) 1 x Star Nut 1 x Top Cap 1 X Compression Cap 1 x 0. 25mm Shim 1 x Crown Race Lower 1 x Bearing Race Upper BEARING SPECIFICATIONS Upper 30. 2 x 41 x 6. 5mm 36 Inside x 45 Outside 28. 6mm Crown 30. 2x41x6. 5 36x45 Lower 30. 2 x 41 x 6. 5mm 36 Inside x 45 Outside 30mm Crown 30. 2x41x6. 5 36x45 Headset Compatibility FSA Orbit IS 2 IS41 Not sure on if this suits? Here are some part codes of bearings from other