HX1 Tapered Headset ZS44/ZS55

HX1 Tapered Headset

Low stack. High strength. Proper fit.

A zero-stack tapered headset in anodised alloy with sealed cartridge bearings. It is the headset on our C3, and because it uses the industry-standard ZS44/28.6 top and ZS55/40 bottom sizes, it fits any frame and fork built to those sizes, whatever the brand: hardtails, dirt jump frames and big BMX with a ZS44/ZS55 tapered head tube. Same beef. Collective look.

Will it fit my bike?

• Yes if your frame has a zero-stack (internal cup) head tube with a 44mm top and a 55mm bottom, and your fork has a tapered steerer (1 1/8 inch at the top, 1.5 inch at the crown).
• Yes on the Collective C3.
• No for a straight 1 1/8 inch fork in a straight 44mm head tube: you want the HX1 Straight Headset.
• No for integrated (IS) head tubes, where the bearings sit straight in the frame, or for external-cup (EC) head tubes.
• No for ZS56 lower cups (a 56mm bottom bore, also common on tapered frames): check the code before you order.

Not sure? Measure the inside of the top and bottom of your head tube, or search your frame's headset size with the SHIS code "ZS44/28.6 | ZS55/40". Still not sure, ask us with your frame model.

Spec

• Standard: ZS44/28.6 top, ZS55/40 bottom (zero stack, tapered)
• Head tube: 44mm top, 55mm bottom
• Steerer: tapered, 1 1/8 inch (28.6mm) top
• Bearings: sealed cartridge
• Material: alloy
• Finish: anodised Oil Slick

Match it with a SC1 seat clamp, Hub 2 or PX1 pedals in the same colour.