Description
Chain Kit AFAM 12x51 - 420 Beta RR after 2005, excellent value for money chain plus sprocket kit. If your chain is starting to stretch out and show easy side to side play, the links develop flat wear patterns or you notice rust and the sprockets are worn down which you can easily see as the teeth are either broken, bent, worn down or cupped out at the base, it is high time to change chain and sprockets. Don't forget to adjust chain tension after installation!
- sprocket hub: 100mm
- sprocket mount: 4 holes
- sprocket teeth: 12x51
- chain: 420 - 134 links
Note: we cannot tell you with 100% certainty which chain and sprockets will fit a specific model. So please compare your chain and sprockets with the picture and the details given above - count the teeth, check the number.
Complete chain Kit
The chain set includes the main components of the chain drive, which are used to transmit the engine power to the rear wheel. Chain kits consist of the following parts: Front sprocket, rear sprocket and chain. You can buy these parts separately or as a complete chain set.
How can I tell that my chain set needs to be replaced?
There are several signs that may indicate that a chain kit needs to be replaced:
- Metallic rattling
- Worn sprocket teeth
- Loose chain that can no longer be properly adjusted
- Difficulty shifting gears or accelerating
- Signs of rust on the chain or sprockets
It is recommended to regularly check and maintain the condition of the chain kit and replace it if there are visible signs of wear.
gear ratio
The transmission ratio of the chain drive is the ratio between the front and rear sprocket. It is calculated as follows: Number of teeth of rear sprocket / Number of teeth of front sprocket. A low ratio increases speed, a high ratio increases acceleration.
Example: 15-tooth front sprocket and 53-tooth rear sprocket: 53/15 = 3.53 gear ratio
