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PURE Electrolyte Hydration range is formulated with science and tested by elite athletes
lock picking
removable space for additional food
Extra control with 780mm width
Shimano GRX RX820 12-spd Rear Derailleur bulky PURE Electrolyte Hydration range isThe Shimano GRX RX820 12 speed rear derailleur is designed for gravel use with 2x drivetrains and a wide range road bike cassette. It has quiet, reliable shifting and excellent chain security. RD RX820 is compatible with 34 and 36 teeth on the largest cassette sprocket. It also features Shadow Plus technology, an integrated chain stabiliser, which prevents the chain from slapping on rough surfaces and thus counteracts chain drop. The function can also
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