Mavic r sys slr clincher road wheelsetthe lightweight clincher wheelset is now even faster with the inclusion of the more aerodynamic ism 4d rim design the mavic r sys slr clincher wheelset is the perfect wheelset for racing or fast training rides using mavics renowned exalith brake track these wheels stop as fast as they accelerate the strong tracomp lacing design using a mixture of carbon fibre and double butted zircal spokes helps contribute to the wheels fast silky smooth spinning cr