Thomson trail carbon riser barusing aerospace technology materials and standards in their components thomson only design a product once they have learned everything about its function and dynamics only then can they know what is necessary to create a thomson featuresthis model is 750mm wide and offers 12mm 12 inch of rise together with a 6 backsweep and 4 upsweep built for strength with enough flex built in for all day comfort strong enough for all mountainfreeride light enough for