What headset does a Santa Cruz Hightower use?
The headset fitment standard on a Santa Cruz Hightower, and how to pick the right part.
This frame's fitment
| Frame | Santa Cruz Hightower |
|---|---|
| Headset standard | ZS44 (zero stack, 44 mm) |
| Cup / bearing outside diameter | 44.0 mm cup outside diameter, 43.9 to 43.95 mm head-tube bore |
| Steerer diameter | 28.6 mm (1 1/8 in) |
The Santa Cruz Hightower uses a ZS44 upper zero-stack headset with a ZS56 lower, a 34.9 mm dropper seatpost, a 15x110 Boost front thru-axle and, on 1x builds, no front derailleur.
The rear is Boost 12x148; confirm your generation. The bottom bracket is a 73 mm BSA threaded shell, covered on its own page.
The part to buy
Search Amazon for ZS44 for your Santa Cruz Hightoweraffiliate searchFind ZS44 for your Santa Cruz Hightower on eBayaffiliate
Related fitment pages
ZS44zero stack, 44 mmBottom bracket for Santa Cruz Hightowersame frame, BB shellSeatpost diameter on a Santa Cruz Hightowersame frameZS44 on a Specialized Stumpjumper (2019 on carbon)same standard, another frame
SOURCES: White Industries, ZS44/EC44 headset · Park Tool, Standardized Headset Identification System (SHIS) · BikeRadar, Mountain bike axle standards: the complete guide