Description
AFAM Steel Sprocket Beta RR50 from 2005
AFAM 50-tooth steel sprocket for 428 chains. Compatible with Beta RR50 from 2005 (4-bolt mounting).
AFAM steel sprockets are manufactured from C45 steel and treated to increase hardness and durability.
Replacing sprockets
The sprocket should be replaced once the teeth become too sharp. After installing a new front or rear sprocket, the chain tension must be correctly adjusted. Replacing the entire drivetrain at once — including the front sprocket and chain — is recommended to ensure even wear and extend the lifespan of all components.
Note: Variations exist depending on the model year. Comparing the dimensions and tooth count of your current sprocket with the image and specifications above helps ensure a proper fit.
Details AFAM Steel Sprocket Beta RR
- Inner diameter: 100mm
- Mounting: 4-hole
- Chain type: 428
- Teeth: 50
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 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.
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