GRX RD-RX812 1x11 Spd. Pump Accessory integrated inner brief and a

integrated inner brief and a drawstring waist

wicking SELECT Transfer fabric

taste-less and odour free polypropylene

Series :DURA-ACE

Rinse with water for a residue free finish

GRX RD-RX812 1x11 Spd. Pump Accessory integrated inner brief and aWith 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 RX812 rear derailleur is compatible with mtb cassettes with a 42T low sprocket max. Silent and uninterrupted rear shifting on rough terrain Adjustable chain stabilizer prevents chain slapping