Shimano GRX RD-RX820 2x 12 Speed Rear Derailleur Comfortmax The GEL 100 CAF 100

The GEL 100 CAF 100 is based on a 0

Petroleum free formula for eco protection

The back of a helmet has a huge impact on how well ventilated it is

high or low pressure

Shimano GRX RD-RX820 2x 12 Speed Rear Derailleur Comfortmax The GEL 100 CAF 100Enhanced chain security and quieter, more stable shifting for gravel ridingThe RD RX820 is compatible with 11 34T and 11 36T 12 speed cassettes, providing a wide gear range so you can spin a comfortable cadence no matter the terrain type. The SHIMANO GRX 12 speed rear derailleur also features an integrated chain stabilizer that delivers quieter shifting and more secure chain management during rough rides. And the chain tensioner has an ON OFF switch