17TH Oversized pulley wheel System KACTUS*Suitable for SHIMANO DA9100 DA9150 R8000 R8050 transmission *12 17T super large size guide wheel set system *Saves 45% chain friction resistance compared to 11T guide wheels *Ceramic bearing version saves more than 2. 2 watts of average power compared to the original transmission system *Full carbon fiber cage *Full 7075 aluminum alloy CNC cutting lightweight guide wheel and TC4 titanium alloy spindle *Ceramic bearing version Ceramic Bead Bearing

GRC1014 : 11&12speed

Easy to clean

Helps the cable move smoothly

Teflon material used in brake hoses

Size: 1-1/8"Threadless Integrated Headset

including spokes

Horizontal size: 49cm / 52cm

such as straight spokes

compared to original transmission

For Shimano 105 and full range of crankset 24mm axis

Please review the details and photos carefully before placing your order

Size(尺寸) 1-1/8"x34x630