High quality aluminium headset with cartridge bearings for standard 1 1/8" (1.125 inch) frames and forks Learn More

This headset cup can adapt Scott Roxter, Trek Roscoe, Avanti Montari and other bikes to take a tapered steerer fork like the Manitou JUnit.

1.5" headset lower cup assembly to adapt a 44 mm head-tube to a 1.5" taper steerer
Includes aluminium lower cup with 12 mm spigot, ACB3645 1.5" cartridge bearing and 36 degree crown race

FSA Part Code:  101-1331 Learn More

Application: 1.5" Lower headset bearing race and matching 4545 steel bearing. Replaces both 45 x 45 degree Campy style and 36 x 45 degree "ACB" headset lower races Learn More

The 1.5" Headset Lower Cup Assembly can be used to adapt Scott Roxter, Trek Roscoe, Avanti Montari and other bikes to take a tapered steerer fork like the Manitou JUnit.

On some bikes (like 20 inch Scott Roxter) the frame head-tube is not machined in deep enough to allow fitment of the headset assembly.

Purchase this machining product with the 1.5" Headset Lower Cup Assembly and we will machine down the headset cup spigot by 5 mm in length. Learn More