it won't harm rubber o-rings or metal surfaces either

one of the most famous downhill MTB tracks in the world

as hard and as often

it’s been engineered with a first-of-its-kind Hangerless Interface

Crank Brothers Mallet Trail BOA Clip-In Shoes - US 7 - Black - Gold Ignore Wholesale Tier 1 Brand Rule it won't harm rubber o-ringsSome things just work better together. Like an optimized shoe pedal combination. Crankbrothers Mallet clip in plays nice on the race track and at the bike park. It has a ramped Match cleat box for easy front and rear pedal entry and for mud shedding. A Race Zone setback on the cleat track allows the cleat to be positioned further toward the heel for added stability when descending. OUTSOLE: Match Box optimized for any MTB pedals Race Zone for control