Description

Fits: Frames with an integrated 1-1/8 inch head tube
Steerer: 1-1/8 inch
Material: Alloy
Bearings: Sealed
Headset type: Integrated 45/45 (Campy spec)

The ACS Maindrive is an integrated 1-1/8 inch headset built to 45/45 Campy spec, which is the standard almost every modern BMX frame with an integrated head tube is cut to. If your frame takes an integrated 1-1/8 inch headset, this drops in.

Construction is alloy with sealed bearings, so the weight stays down at the front end and the bearings are shielded from the water and grit that usually finish a headset off.

Features

Integrated 1-1/8 inch fit. Suits pretty much every frame on the market with an integrated 1-1/8 inch head tube, so there are no cups to press in.
45/45 Campy spec. Cut to the 45/45 degree Campy standard, so the bearings seat properly in a frame machined to that spec.
Sealed bearings. Sealed bearings keep water and grit out of the races, so steering stays smooth through winter.
Alloy construction. Alloy parts keep the weight off the front of the bike without adding bulk to the head tube.