Description
Rear Sprocket Z50 Derbi DRD
Rear sprocket / chainring steel Z50 - 420 IGM Derbi Senda DRD, Bultaco Astro, Lobito, Rieju RR, Aprilia RX - high quality reinforced IGM steel sprocket. Can be used either as a replacement for a damaged original chainring or to change the gear ratio.
We also recommend replacing the front sprocket and chain. You can also simply replace the chain drive with a complete chain set.
Note: As there may be different variants depending on the year of manufacture, please compare the dimensions and teeth of the original sprocket with the illustration and the specifications.
IGM steel chainring specifications
- Inner diameter: 102.3 mm
- Bolt circle: 125mm
- Mounting: 6 hole
- 50 teeth
- For chain type 420
Funstion of Rear procket
The rear sprocket of a motorcycle is an essential part of the chain drive. It is attached directly to the output of the gearbox and is connected to the front sprocket via a chain.
How can I tell if the sprocket is worn?
A worn or damaged sprocket may show signs such as metallic rattling noises, worn teeth, a loose chain, or difficulty shifting gears.
smaller or larger chainring?
- Sprocket with more teeth → improved acceleration
- Sprocket with fewer teeth → higher top speed
You also have to consider the gear ratio between rear chainring and front sprocket. The calculation is: number of teeth of rear sprocket / number of teeth of front spocket. A low ratio increases speed, while a high ratio improves acceleration.
To ensure optimal life, it is important that you do not neglect chain care, we recommend a special chain brush.
| Rear Sprocket 50 teeth – 420 IGM Derbi DRD Pro | |
|---|---|
| Article no. | IGM88291 |
| EAN | 7421083809381 |
| Weight | 0,60 kg |
| Brand | IGM |
| Product type | Chain rear sprocket |
| Chain type | 420 |
| Rear sprocket | 50 |