Our original—and still our go-to—shifter system. Fast, durable, and lighter than a set of Shimano Ultegra shifters. 100% Shimano Road compatible and designed to work with Shimano Ultegra, Dura-Ace, 105, and compatible Gevenalle derailleur systems. Standard road brake cable pull compatibility: Road calipers Cantilever brakes Road disc calipers (BB7 Road, TRP Spyre, etc.) Shorter linear-pull brakes such as the TRP CX8.4 (under 90 mm pivot-to-cable distance) CX2 Includes left and right shift levers Compatible with double or triple chainring setups CX1 Includes left and right brake levers Left lever does not include a shift lever mount for single chainring setups Right lever is switchable between indexed and friction shifting Rear shifting is indexed and can be switched to friction mode if needed. Front shifting is friction. Available in 9, 10, 11, and 12-speed versions for Shimano Road and GRX derailleurs 100% Satisfaction Guarantee Ride them for 30 days and if they're not right for you, return them for a full refund — no hassle, any reason, any condition.