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What thru-axle does a Santa Cruz Tallboy use?

The axle fitment standard on a Santa Cruz Tallboy, and how to pick the right part.

DROPS IN
A Santa Cruz Tallboy uses a 15x110 mm Boost front thru-axle at the front (15 mm x 110 mm Boost, front).
This frame's fitment
FrameSanta Cruz Tallboy
Front thru-axle15x110 mm Boost front thru-axle (15 mm x 110 mm Boost, front)
Axle diameter15 mm axle
Thread pitchcommonly M15 x 1.5
SHELL commonly M15 x 1.5
SPINDLE see table

The Santa Cruz Tallboy uses a ZS44 upper zero-stack headset, a 30.9 mm dropper seatpost and a 15x110 Boost front thru-axle, with a 12x148 Boost rear.

The Tallboy is 1x with no front derailleur. The bottom bracket is a 73 mm BSA threaded shell, covered on its own page.

The part to buy
Search Amazon for 15x110 mm Boost front thru-axle for your Santa Cruz Tallboyaffiliate searchFind 15x110 mm Boost front thru-axle for your Santa Cruz Tallboy on eBayaffiliate
Related fitment pages
15x110 mm Boost front thru-axle15 mm x 110 mm Boost, frontBottom bracket for Santa Cruz Tallboysame frame, BB shellHeadset on a Santa Cruz Tallboysame frame15x110 mm Boost front thru-axle on a Specialized Stumpjumper (2019 on carbon)same standard, another frame

SOURCES: BikeRadar, Mountain bike axle standards: the complete guide · Velopedia, Boost spacing · Park Tool, Standardized Headset Identification System (SHIS)