Brother Cycles Big Bro Steel Fork

A rigid steel mountain bike fork, suspension corrected for 100mm, with mounts for cages, racks and low riders.

This is the fork that comes with the Big Bro, sold on its own as a rigid upgrade for a wide range of mountain bikes. With a 483mm axle to crown, it sits at roughly the height of a sagged 100mm suspension fork, so it will not upset your geometry.

It clears tyres up to 3 inch, has triple cage mounts and rack mounts, and works with low rider racks and panniers. Available in Boost (110mm) or non-Boost (100mm). The non-Boost version does not have the two upper front rack mounts.

Why we chose this for our customers:

• Rigid and reliable: no seals or servicing, ideal for loaded touring and bikepacking
• Suspension corrected: 483mm axle to crown, close to a sagged 100mm fork
• Huge clearance: 29 x 3 inch or 27.5 x 3 inch tyres
• Carries a load: triple cage mounts, rack mounts, low rider compatible

Specification

• Axle to crown: 483mm
• Offset: 46mm
• Steerer: 300mm, tapered 1 1/8 to 1 1/2 inch
• Tyre clearance: 29 x 3 inch, 27.5 x 3 inch
• Hub spacing: 110mm Boost or 100mm
• Brake mount: IS, max 203mm rotor
• Axle: 15mm thru axle included (M15 x 1.5)
• Weight: 1.37kg uncut

Ideal for: riders converting a mountain bike to a rigid bikepacking or touring rig.

Not sure which version fits your frame? Bring the bike to our workshop in Bow and we will check it and fit it for you. See the full Brother Cycles range or book a fitting with our workshop.