Shimano FC-4550 10 Speed Compact 50/34T Chainset - 170mm Inc Chain Guard - Black Rear Shocks Rapid rise rear derailleur with Tyre Width_2.2 Material Natural Pant Size:8 1G28294U10OS /

Rapid rise rear derailleur with smart cage

The symmetrical design of the inner chainring teeth allows improved stability with chain crossovers

"Zero Setting" And "Riding Setting": used to set the initial configuration of the components and make fine adjustments during a race

For kids bike sizes from 10" to 20"

Dual adjustable shock-cord accessed from front pockets

Shimano FC 4550 10 Speed Compact 50 34T Chainset 170mm Inc Chain Guard Black Rear Shocks Rapid rise rear derailleur with Tyre Width_2.2 Material Natural Pant Size:8 1G28294U10OS Rapid rise rear derailleur with smart cage The symmetrical design of the inner chainring teeth allows improved stability with chain crossovers