Time atac mx4with a large platform for better stability the time atac mx4 mtb pedals which allows you to attack in the most extreme situation with total confidence the mx4 uses a composite body and oversize steel axle making them a more heavy duty pedal then the mx2 that is perfect for trail all mountain and enduro riding with lower spring tension the atac design causes less friction in extreme conditions and along with an optimized release angle 10 degrees provides consistent entry and