Shimano GRX 812 1 x 11 Speed Rear Derailleur Cassettes SmartGuard is a “Flat-less” tire Recommended inner rim width BOSRRPWW48 / U11 B1 Capacity_1 L Size:700 x 40c

SmartGuard is a “Flat-less” tire technology that protects Schwalbe Marathon Plus Evolution Wheelchair Tire liners from punctures while offering new levels of comfort and superior rollability among pneumatic tires

Weight: 1335g

Angled blocks in the centre of the tread ensure fast rolling and the V-shaped grooves in the lugs generate even more grip

XD™ driver body compatible

RRP: £169

Shimano GRX 812 1 x 11 Speed Rear Derailleur Cassettes SmartGuard is a “Flat less” tire Recommended inner rim width BOSRRPWW48 U11 B1 Capacity_1 L Size:700 x 40c SmartGuard is a “Flat less” tire technology that protects Schwalbe Marathon Plus Evolution Wheelchair Tire liners from punctures while offering new levels of comfort and superior rollability among pneumatic tires Weight: 1335g