The SD Ace Pro Thru-Bolt Hub Front is a black anodized hub featuring multiple spoke holes, metallic accents, and sealed cartridge bearings. CNC machined from aluminum, it is elegantly displayed against a white background.

Highlights

Sealed cartridge bearings
CNC machined aluminium shell
Built for a 20mm axle
100mm locknut to locknut

Description

SD Ace Pro 20mm Front Hub comes with sealed cartridge bearings and features a CNC machined aluminium hub shell.

Features

Sealed cartridge bearings. Sealed cartridge bearings keep grit and water out, so the front wheel keeps spinning smoothly.
CNC machined aluminium shell. The hub shell is CNC machined from aluminium, which keeps weight down at the front of the bike.
Built for a 20mm axle. A 20mm through axle hub. The axle itself is sold separately, so order one if you do not already have it.
100mm locknut to locknut. Axle width measures 100mm locknut to locknut, so check that against the spacing in your forks.
36 hole, black only. Available in 36 hole black, so it laces up to a standard 36 hole rim.

Specifications

Width: 100mm (locknut to locknut)
Material: CNC machined aluminium hub shell
Bearings: Sealed cartridge
Hole count: 36
Axle: 20mm through axle
Colour: Black
Note: 20mm through axle sold separately. Flange diameter 51mm, flange to locknut 16mm.

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/PCD (pitch circle 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

Flange position

Flange to locknut Centre to flange

Drive side mm Non-drive side mm

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ERD effective rim diameter, from the spec sheet mm