HX1 Straight Headset ZS44 1 1/8"

HX1 Straight Headset

Low stack. CNC'd. No squeaks.

CNC-machined with a black anodised conical top cover and a laser-etched Collective wordmark. It is the headset on our C100, and because it is a standard ZS44 zero-stack headset for straight 1 1/8 inch steerers, it also fits a long list of other bikes: hardtails, dirt jump and street frames, big BMX and many older mountain bikes with a straight 44mm head tube.

Will it fit my bike?

• Yes if your frame has a straight zero-stack (internal cup) head tube, 44mm inside at the top and bottom, and your fork has a straight 1 1/8 inch (28.6mm) steerer.
• Yes on the Collective C100 V3.
• No for a tapered fork in a 44/55mm head tube: you want the HX1 Tapered Headset.
• No for integrated (IS) head tubes or external-cup (EC) head tubes.

Not sure? Measure the inside of your head tube, or look up your frame's SHIS code (ZS44/28.6 top). Still not sure, ask us with your frame model.

Spec

• Standard: ZS44, zero stack, straight
• Head tube: 44mm
• Steerer: 1 1/8 inch (28.6mm)
• Bearing size: 41.8 x 30 x 9.4mm (C2861TT), sealed cartridge (black)
• Top cover: 7.8mm conical, CNC machined, black anodised
• Finish: Chrome, with a laser-etched Collective wordmark

Match it with a SC1 seat clamp, ST1 stem or PX1 pedals in the same colour.