Description
Rear Sprocket steel 39 teeth - 428 AFAM Kymco Pulsar, as replacement chainring for the chain drive of your two-wheeler or to change the gear ratio.
The sprocket should be replaced as soon as the teeth become too sharp. After mounting the sprocket (rear or front), it is really important to readjust the chain tension correctly.
Note: is very difficult to determine the models the sprockets fit with 100% certainty. We recommend that you compare the photo and specifications with the sprocket on your bike.
Specifications:
- hole diameter: 58mm
- mounting: 4 holes
- chain type: 428
Funstion of Rear procket
The rear sprocket of a motorcycle is an essential part of the chain drive. It is mounted directly on the rear wheel and is connected to the front sprocket via a chain.
How can I tell if the sprocket is worn?
You can usually identify rear sprocket wear by inspecting the teeth. Worn teeth have an irregular shape and appear thin, very pointed or bent. You may also notice metallic rattling noises. Severe wear can cause the chain to skip because it slips over the excessively worn teeth.
smaller or larger Sprocket?
- Sprocket with more teeth → improved acceleration
- Sprocket with fewer teeth → higher top speed
You also have to consider the gear ratio between rear 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.
Example: Front sprocket with 13 teeth and rear sprocket with 48 teeth: 48/13 = a ratio of 3.69.
Sprocket types
Steel is preferable to aluminium if you want the longest possible service life. Aluminium is the better choice for maximum performance because it is lighter. Self-cleaning anti-mud rear sprockets are suitable for off-road use in dirt and mud.
Chain care
To ensure optimal life, it is important that you do not neglect chain care, we recommend a special chain brush.
Overview of most common sprockets
- Sprocket, 62 mm internal diameter / 5-hole: Rieju (older models), Peugeot, Motorhispania
- Sprocket, 100 mm internal diameter / 4-hole: Beta RR50 from 2005
- Sprocket, 102 mm internal diameter / 6-hole 3x2: Derbi Senda DRD
- Sprocket, 105 mm internal diameter / 6-hole 3x2: Aprilia, Derbi, Gilera, Rieju, Peugeot, Motorhispania, Yamaha, MBK
- Sprocket, 108 mm internal diameter / 6-hole: Aprilia, Derbi, Gilera
| Rear Sprocket steel 39T - 428 AFAM Kymco Pulsar | |
|---|---|
| Article no. | AFAM10201-39 |
| EAN | 5414837019558 |
| Weight | 0,58 kg |
| Brand | AFAM |
| Product type | Chain rear sprocket |
| Chain type | 428 |
