Close-up of the SD Ace Pro Thru-bolt Rear Disc Hub in black, with multiple holes on its flanges and metal components, featuring a CNC machined aluminum hub shell, isolated on a white background.

The SD Ace Pro Thru-bolt Rear Disc Hub, shown with two washers and a lockring on a plain background, is disk brake compatible and designed with a 15mm through axle for reliability.

Introducing the SD Ace Pro Thru-bolt Rear Disc Hub: a stylish black bicycle hub with multiple spoke holes and a silver/black center. It features a 15mm thru-axle, gear attachment, and is disk brake compatible for optimal performance on any ride.

Highlights

180 points of engagement
Sealed cartridge bearings
15mm through axle fitment
Disc brake compatible

Description

The SD Ace Pro Rear Hub is a 15mm through axle hub and is disk brake compatible.

Features

180 points of engagement. Six quadruple pawls give 180 points of engagement, so the drive picks up almost the moment you load the pedals.
Sealed cartridge bearings. Sealed cartridges keep track grit and water out of the hub shell, so it keeps rolling through wet meetings.
15mm through axle fitment. Built around a 15mm through axle for a stiffer back end in frames that take the larger axle.
Disc brake compatible. Set up for a disc rotor, so you can run disc braking off the rear wheel.
36 hole CNC shell. The aluminium shell is CNC machined and drilled for 36 spokes, in black only.

Specifications

Material: CNC machined aluminium hub shell
Bearings: Sealed cartridge
Engagement: 180 points, 6 quadruple pawl driver
Hole count: 36 hole
Axle: Alloy 15mm through axle
Mount: Disc brake compatible
Colour: Black
Note: 15mm through axle sold separately. Flange PCD 58mm drive side and 58mm non-drive side; flange to lock-nut 31mm drive side and 33.8mm non-drive side.

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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

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