Description
428 Afam Steel Sprocket for Derbi / Rieju / Yamaha / MBK
Afam Steel Sprocket, 50 Teeth, for 428 Chains; replacement sprocket for the chain drive or to change the gear ratio. The sprocket should be replaced when the teeth become too sharp. After installing the sprocket and/or chainring, it is essential to adjust the chain tension correctly.
AFAM steel sprockets are made from C45 steel and then heat-treated to achieve greater hardness and durability.
Compatibility
- Aprilia SX50 / RX50 2006–2010
- Derbi Senda 2000–2010
- Gilera SMT / RCR 2003–2010
- MBK X-Limit 2003–2011
- Motorhispania Furia 2000–2005 / Furia Max / RYZ / YR11
- Malaguti XSM / XTM
- Peugeot XPS
- Rieju MRT / MRX / SMX / RRX / Tango
- Yamaha DT50 2003–2011
Note: Since there may be different variants depending on the model year and model, please compare the dimensions and number of teeth on your sprocket with the illustration and the specifications. For Derbi, Gilera, and Aprilia, the best way to identify the version is by the bolt pattern (6-bolt or 3x2). Here you’ll find a list with the most common versions.
Details Afam Steel Sprocket
- Bolt pattern: 6-hole 3x2
- Inner diameter: 105 mm
- Chain type: 428
- Teeth: 50
- Color: Silver
- Derbi OEM number: 00H01317031
- Rieju OEM number: 0/000.500.5010
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
