Renthal Ultralight? rear chainwheels are manufactured to extremely tight tolerances from 7075 T6 aluminium alloy which is 66% lighter than steel, yet incredibly durable. Their advanced tooth profile, concentricity...
It consists of a central body made of polyamide (impact and abrasion resistant) and two pieces (front and rear) made of thermoplastic elastomer to absorb possible impacts with the rider._x000D__x000D_Its racing design...