Online Catalogue

Derbi 50 GPR R

Front Sprocket

Steel Front Sprocket

Part Number: JTF1129

Teeth: 12

Available Sizes: 12, 13, 14, 15

Drive Chain

Pitch: 420

Length: –

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

Lower gear ratios allow for higher top speeds.

Higher gear ratios increase torque for better acceleration.

Full Gear Ratio Chart (pdf)