REAR SUSPENSION FOR THE FRONT OF YOUR BIKE Its unique anti-dive technology and design leave no one indifferent and will make you an inspired precursor. The geometry of your bike will be perfectly preserved because we have respected the standards of fork height offset and axle path of the market. The assembly is perfectly standard and is done in a few minutes. The maximum acceptable tyre sizes are 29x2.6" or 27.5x3.0". The Motion E18 mounts on all MTB frames with tapered steerers: 1"1/8 - 1" 1/2.