Rear Sprocket Beta RR 48T - 420 Voca Alu blue
Description
Chainring 48 teeth Beta RR from Voca Racing
CNC aluminum sprocket from VOCA Racing for Beta Factory / RR SM after 2005 with 420 chain.
HQ sprocket from VOCA - light and robust
The sprockets are precision CNC-milled from an aerospace-grade aluminum alloy (AA-7075-T6). The choice of this high-quality alloy not only ensures a strength comparable to conventional steel sprockets, but also offers a significant reduction in weight and thus the load on the rear axle, which can be a decisive advantage, especially in racing.
The seamless, weld-free design of the VOCA sprocket ensures excellent structural integrity and optimizes power transfer from the engine to the rear wheel with minimal power loss.
Custom chains and sprockets
The Voca sprockets are available for many 50cc motorcycles, with different numbers of teeth and in different colours, so you can match the sprocket to your bike.
We also stock a large selection of rear sprockets from other manufacturers. We recommend replacing the entire assembly at once, i.e. also replacing the sprocket and chain, in order to increase the service life of all components through even wear.
Specifications Voca Racing sprocket Beta RR:
- 48 teeth
- Inner diameter: 100 mm
- Hole spacing: 120mm
- Hole diameter: 8.5 mm
- Chain type 420
- Mounting: 4 holes
- Colour: Blue
- Rear sprocket Beta RR SM
- Rear sprocket Beta RR Enduro
- Rear sprocket Beta RR Track
Attention: It is very difficult to determine with 100% certainty all the models this sprocket is compatible with. We therefore recommend comparing photos and dimensions with the sprocket currently installed on your bike.
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 Beta RR 48T - 420 Voca Alu blue | |
|---|---|
| Article no. | VCR-SD450.BETA.48/BL |
| Weight | 0,60 kg |
| Bolt pattern | 4-hole |
| Brand | Voca Racing |
| Product type | Chain rear sprocket |
| Chain type | 420 |
| Inside diameter | 100 mm |
| Rear sprocket | 48 |
| Colour | Blue |