Rear sprocket for Derbi DRD Racing R Bultaco 420 pitch IGM - steel

High-quality sprockets, IGM brand.
Gear ratios in geared mopeds are extremely important to get the most out of the engine. A gear ratio that is too long may prevent you from taking full advantage of the engine's power, and one that is too short can have the same effect. Normally, you should follow certain guidelines to choose them.
In the case of the sprocket it is completely different, if it has more teeth it means a shorter gear ratio (higher RPM), whereas if it has fewer teeth it means a longer gear ratio (higher top speed)

Valid for the following models:

Rieju
- Road 50 RR 
Bultaco
- Road 50
- Lobito 50
- Astro SM 50
Derbi 
- Road 50
- Senda R DRD 02-05
- Senda R DRD Racing 06-13
- Senda R DRD Pro 06-13
- Senda SM DRD 02-05
- Senda SM DRD Racing 06-10
- Senda SM DRD Pro 06-12
Gilera
- RCR 50 12-16