Description
Steel rear sprocket 53T Generic Trigger
AFAM steel rear sprocket with 53 teeth for standard 420 chains. This reinforced sprocket is used as a replacement for the original part and can also be used to change the final drive ratio. AFAM manufactures these steel sprockets from C45 steel and subsequently treats them to achieve greater hardness and durability.
This sprocket fits many different models, mainly from Asian manufacturers:
- Aprilia RX50 / MX50 up to 2005
- Explorer Sniper 50
- Generic Trigger 50
- KSR TR 50
- Keeway TX 50 / X-Ray 50
- Malaguti XSM 50 from 2019 onwards
- Ride MRS / MRX / Thorn 50
Changing the sprocket
You should replace the rear sprocket once the teeth become too sharp. After installing the front sprocket and/or rear sprocket, you must adjust the chain tension correctly. We recommend replacing the entire drive set at the same time, including front sprocket and chain. This ensures even wear and increases the service life of all components.
Specifications AFAM steel rear sprocket
- Reinforced quality
- Material: Steel
- Inner diameter: 105mm
- Bolt circle diameter: 120mm
- Mounting: 5 holes
- Hole diameter: 8.5mm
- Chain type: 420
- Number of teeth: 53
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
