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Bike component fitment: bottom bracket, headset, seatpost, axle

A Nukeproof Mega uses a 15x110 mm Boost front thru-axle at the front (15 mm x 110 mm Boost, front). The dimensions, how to confirm it on your frame, and how it compares to the neighbouring standards.

Updated 05 September 2026.

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What thru-axle does a Nukeproof Mega use?

The axle fitment standard on a Nukeproof Mega, and how to pick the right part.

DROPS IN
A Nukeproof Mega uses a 15x110 mm Boost front thru-axle at the front (15 mm x 110 mm Boost, front).
This frame's fitment
FrameNukeproof Mega
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 Nukeproof Mega uses a ZS44 zero-stack upper headset (zero stack, 44 mm), a 34.9 mm class seatpost, a 15x110 mm Boost front thru-axle at the front (15 mm x 110 mm Boost, front) and a braze-on front derailleur.

Most builds are 1x, so the front-derailleur mount note applies only to 2x setups. The rear is typically Boost 12x148; confirm your generation. The bottom bracket is covered on its own page.

The part to buy
Shop 15x110 mm Boost front thru-axle for your Nukeproof Mega on AmazonaffiliateFind 15x110 mm Boost front thru-axle for your Nukeproof Mega on eBayaffiliate
Related fitment pages
15x110 mm Boost front thru-axle15 mm x 110 mm Boost, frontBottom bracket for Nukeproof Megasame frame, BB shellHeadset on a Nukeproof Megasame 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)

Questions and answers

What thru-axle does a Nukeproof Mega use?

A Nukeproof Mega uses a 15x110 mm Boost front thru-axle at the front (15 mm x 110 mm Boost, front).