Cane Creek 50 Headset - ZS44/28.6/H8 Upper | ZS56/40 Lower Tapered Black CheckoutSpec=SID front/rear front axle/spacing (mm) 15x110

front/rear front axle/spacing (mm) 15x110 Boost hole 32h color gold weight 166g

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and Turnkey (lockout) upper

KOM Tough rims are extruded from top-tier AL 6069 alloy to provide utmost durability at a reasonable weight

Cane Creek 50 Headset - ZS44/28.6/H8 Upper | ZS56/40 Lower Tapered Black CheckoutSpec=SID front/rear front axle/spacing (mm) 15x110Additional machining on the cups, but incorporating all the features of the 40 Series headset while offering the perfect balance of performance and value Machined, bevel and relieved 6061 T6 aluminum for minimized weight and maximized strength with ZN40 sealed cartridge bearings Compatible with Cane Creek Interlok spacers and traditional spacers. Spacers sold separately TECH SPECS