Shimano GRX Di2 Rear Derailleur (RD-RX815) shimano Consisting of highly refined laboratory-grade

Consisting of highly refined laboratory-grade paraffin and a high concentration of 3 specific sizes of nano-scale Tungsten disulfide

compliant-yet-snappy carbon laminate

This scaled-down version of the original Plan B mounts neatly under the saddle and around the rails using a 25mm strap secured by a clever magnetic hook

The 360¡ head belt ensures that there will be no pressure points on the skull and its internal shape is inspired by the award-winning MET Trenta 3K Carbon

Training in all conditions

Shimano GRX Di2 Rear Derailleur (RD-RX815) shimano Consisting of highly refined laboratory-gradeWith an integrated chain stabilizer mechanism, the SHIMANO GRX derailleur provides a quieter experience and shifting security and precision on mixed terrain. For rides on smooth surfaces, the derailleur features and ON OFF switch for the chain tensioner. The RD RX815 DI2 version offers the digital precision of SHIMANO electronic shifting and synchronized shifting. and is compatible with road cassettes with a 34T low sprocket max. Features Silent and