With the "Ruphus" chainring, Kappstein offers a solution for the crankset. It is CNC machined out of a 5mm 7075 T6 aluminium plate. Despite its low weight of only 99 grams (49T), the Ruphus chainring is very rigid. It is an absolute must have for everyone who values design and performance. For fixed gear enthousiasts, it is ideal to optimise the drivetrain of your bike and will allow you to achieve your full potential.