Ultimate Carbon Extension Ultegra With a double deadbolt design

With a double deadbolt design you can rest assured that this lock can withstand cut and twist attacks from pesky bike thieves

Road bikes

but is compatible with 8- to 13-speed drivetrains* as well as Zwift Cog and Click — letting you train with the setup that matches your goals and gear—whether you prefer the tactile feel of mechanical shifting or the clean simplicity of wireless

HG technology has chamfered inner plates to optimise shifting performance on HG sprockets

Ultimate Carbon Extension Ultegra With a double deadbolt design3D shape with 15mm offset grip provides comfort across rotational configurations. Designed for high hand positions to optimize aerodynamic performance. 30 deg grip angle provides a neutral wrist orientation, promoting upper body comfort. Unidirectional carbon fiber construction creates an ideal strength to weight ratio. Trimmable termination height allows for custom tailoring to deliver the perfect fit.