Increased speed thanks to improved aerodynamics the new wider elliptical rim shape and 5 aircraft wing spokes lower wind resistance and make the wheel stiff beyond expectations enhanced rigidity for perfect steering a wider rim and monobloc construction in combination with the 3k carbon fibre make a stiff wheel with exceptional handling properties excellent rolling efficiency tubular rims and interchangeable qrm cartridge bearings for extra low friction qrm are the highest standard sealed car