The prime rr 28 carbon clincher road wheelset features a 28mm deep t700 ud carbon fibre rim to reduce rotational weight making them a climbing legend the shallow rim also produces predictable handling abilities as it reduces crosswind impact the rr 28 benefits from a wider rim profile as the interface with the tyre creates a more linear contour continuing to increase the wheels aerodynamic properties the prime rp 28 carbon clincher road wheelset is built up from the cnc machined 7075 alloy b