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What thru-axle does a Santa Cruz Megatower use?

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

DROPS IN
A Santa Cruz Megatower uses a 15x110 mm Boost front thru-axle at the front (15 mm x 110 mm Boost, front).
This frame's fitment
FrameSanta Cruz Megatower
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 Megatower uses a ZS44 upper zero-stack headset, a 34.9 mm dropper seatpost and a 15x110 Boost front thru-axle, with a 12x148 Boost rear.

Megatower builds are 1x, so there is no front derailleur to size. 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 Megatoweraffiliate searchFind 15x110 mm Boost front thru-axle for your Santa Cruz Megatower on eBayaffiliate
Related fitment pages
15x110 mm Boost front thru-axle15 mm x 110 mm Boost, frontBottom bracket for Santa Cruz Megatowersame frame, BB shellHeadset on a Santa Cruz Megatowersame 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)