Clarks A1 centre lock rotor features a high-grade stainless-steel rotor with aluminium splined centre lock fitting Design offers reduced heat transfer, lower noise and consistent braking Optimal Thickness: The 1.8mm thickness offers enhanced robustness, making this rotor ideal for demanding rides and providing reliable braking power Centrelock Mounting: Supplied with Thru-acle lockring for easy installation and secure fitment on centrelock compatible wheelsets 203mm: Maximum braking power for extreme conditions and heavy riders, providing the utmost in stopping power