Featuring a smooth, matte black cylindrical body with flanges on both ends and multiple spoke holes, the Onyx BMX XL 100/20mm Grooved Front Hub is proudly made in the USA.

Highlights

Fits 20mm thru-bolt forks
238g on the scales
Drilled 28 or 36 hole
Fully rebuildable

Description

Onyx have revised the design of their front hub and in the process, shaved a few grams off an already light front hub. Now termed the XL (Xtra Light), this brand has forged an enviable reputation on the world racing scene, dominating everything from Olympic finals to club race days. 100% made in the USA, these are our most asked for, and recommended race hub brand.

Manufactured without compromise, Onyx hubs are fully rebuildable, meaning that they have an infinite lifespan with a deep part's inventory. They are designed to be easily disassembled for maintenance and servicing, meaning that there is very little downtime, and more time for you to be out on track.

Features

Fits 20mm thru-bolt forks. A 100mm front axle width with 20mm thru-bolt attachment, so it drops into a standard race fork without adaptors.
238g on the scales. The revised XL shell shaves a few grams off an already light front hub, taking weight off the front of the bike.
Drilled 28 or 36 hole. Pick the drilling that matches your rim, with J-bend flanges so a standard spoke build works.
Fully rebuildable. A deep parts inventory and easy disassembly mean servicing is quick, so there is little downtime between race days.
Grooved hub shell. The grooved shell is where the weight comes off, and the hub is 100% made in the USA.

Specifications

Width: 100mm front axle width
Hole count: 28 or 36
Spokes: J-bend
Axle: 20mm thru-bolt
Axle size: 20mm
Weight: 238g
Note: Maximum spoke tension 120kgf.

Spoke calculator

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Hub spacing locknut to locknut, 100 front or 110 rear on most BMX mm Same both sides front hubs, or matching flanges

Flange diameter spoke hole centre to the opposite hole centre. The drive side is the driver side, left or right hand drive alike, and is usually the bigger flange

Drive side mm Non-drive side mm

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Drive side mm Non-drive side mm

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ERD effective rim diameter, from the spec sheet mm