Shimano BB-UN300 Square Taper JIS 68x118mm Spindles BSA (English) Bottom Bracket Price:Default Title The X-Comfort Zone allows the

The X-Comfort Zone allows the foot to swell up to 5 mm while riding

11-34T Compatible Chain - HG 9-Speed Series - SF-1200 SF-MX30 Generation - Non-Series Number of Speeds - 9 Cassette or Freewheel - Cassette Finish - Anodized

moisture-wicking Fit Sensor fabric

Gears make pedalling easier and more efficient so your young rider can have fun tackling new terrain

For Novice riders

Shimano BB-UN300 Square Taper JIS 68x118mm Spindles BSA (English) Bottom Bracket Price:Default Title The X-Comfort Zone allows theShimano BB UN300 Square Spindle Bottom BracketsFeatures Fits JIS square taper cranksets Crankarm fixing bolts sold separately Hollow spindleItem Specifications Spindle Length: 118 Spindle Interface Type: Square Taper JIS Bottom Bracket Shell I. D.: 1. 37 BB Frame Interface: English BB Shell Width (mm): 68 mm