Attack pinion Derbi euro 2/3/4 pitch 420 IGM

Quality Front sprocket from manufacturer IGM for DERBI engine. Choose the number of teeth you need.

Gearing on geared mopeds is extremely important to get the most out of the engine. Excessively tall gearing may mean you do not make full use of the engine's power, and with excessively short gearing likewise; normally, you need to follow certain guidelines to choose it.

To understand this: if you fit fewer teeth, it means shorter gearing (higher RPM), whereas if it has fewer teeth, it means taller gearing (higher top speed)

Attention: Carefully check the spline type of the Front sprocket together with the Front sprocket retainer before ordering.

Required center distances and retainer plates:

• Front sprocket 11: 25 mm and M5 Retainer plate: 93231
• Front sprocket 12: 28 mm and M6 Retainer plate: 93231
• Front sprocket 13: 28 mm and M6 Retainer plate: 93231
• Front sprocket 14: 28 mm and M6 Retainer plate: 93231
• Front sprocket 15: 28 mm and M6 Retainer plate: 93231