JT Sprockets

Online Catalogue

Derbi 125 Cross City

2007 to 2014

Front Sprocket

Part Number: JTF259

Teeth: 15

Available Sizes: 12, 13, 14, 15, 16, 17

12 tooth version does not feature bolt holes

Rear Sprocket

Part Number: JTR1134

Teeth: 50

Available Sizes: 48, 50, 51, 52, 54, 56

Drive Chain

Pitch: 428

Length: 134

Please note that the chain shown in this listing is for size reference only. For the correct chain type and grade, please refer to the vehicle's manufacturer manual.

Gear Ratio Chart

Full Gear Ratio Chart (pdf)

Teeth121314151617
484.003.693.433.203.002.82
504.173.853.573.333.122.94
514.253.923.643.403.193.00
524.334.003.713.473.253.06
544.504.153.863.603.383.18
564.674.314.003.733.503.29