The RaceFace ARC Offset is an asymmetric aluminum rim. The offset spoke bed evens out spoke tension between the two sides for a stiffer, stronger wheel. This one is 29 inch, 30 mm internal, 32 hole.

What it's for

A rim for custom wheel builds, from cross country to gravity and electric mountain bikes.

How it works

Offset spoke bed: the spoke holes sit 4.5 mm off center. On a dished wheel that brings left and right spoke tension closer together.

Compatibility

• Wheel size: 29 in
• Holes: 32
• Tubeless: ready (tape, valves, and sealant sold separately)

Specs

• Internal width: 30 mm
• Rim height: 20 mm
• Offset: 4.5 mm
• Material: 6069 aluminum
• Warranty: lifetime, crashes included
• Part number: ORM19ARCOS302932H

In the box

• Rim only