Details
https://www.greenlandmx.co.uk/en/gas-gas-secondary-gear-v-z-21/ME25636080.htmlGas Gas secondary gear V Z-21
The original spare parts are those spare parts supplied by the vehicle manufacturer and guarantee that the part is identical to the one mounted in the production chain of that vehicle.
By purchasing original spare parts of the KTM/Husqvarna/Gas Gas Business Group you make sure to install the same parts with the same specifications required by the manufacturer.
When ordering original spare parts, it is crucial to know the exact vehicle model to avoid any errors.
Therefore, we strongly recommend checking the vehicle identification number stamped into the chassis of the vehicle, which will provide accurate information regarding the year of manufacture and the vehicle model. It often happens that the year of registration that appears on the registration document is inaccurate, since the motorcycle may have been registered in subsequent years and which does not coincide with the year of the model.
It is equally important to ensure that the motorcycle has not undergone important modifications that may have altered its original construction. For example, the suspension fork may have been replaced or the braking system exchanged with parts other than the originally installed ones. This may happen when buying a second-hand motorcycle and you do not know which maintenance, repairs or modifications have been performed in the past.
When selecting electrical spare parts, wiring or any electronic or homologation component, it is preferable that you first check the reference code to ensure compatibility with your motorcycle, since the exploded views are generated based on American models, and there may be differences with European models.
Brand | Gas Gas |
Modality | Cross/Enduro |
Before taking a final decision while selecting a certain front or rear sprocket, we have to bear the following premises in mind:
- The higher the number of teeth on your rear sprocket, the shorter the development. Therefore, our dirt bike will improve the delivery of power to low regime, but it will lose top speed.
- The higher the number of teeth in our front sprocket, the longer the development. Our dirt bike will lose delivery power at low speed, while gaining top speed.
- The lower the number of teeth in our rear sprocket, the longer the development. Therefore, our bike will lose delivery power at low speed, while gaining top speed.
- The lower the number of teeth in our front sprocket, the shorter the development. Our bike will gain delivery power at low speed, while losing top speed.
- ATENTION: If we decide to vary the number of teeth in our front sprocket, the change will be more noticeable than if we were to do so for our rear sprocket. One tooth difference in our front sprocket, equals the change of three teeth in our rear sprocket.
- Therefore, if we want to slightly modify our dirt bike performance, the ideal way to do so would be to increase or decrease one or two teeth in our rear sprocket. Contrariwise, if we want a more noticeable change in the performance, we can choose to increase or decrease the number of teeth on our front sprocket one by one or do the same for the rear sprocket but always changing the teeth on a 3 by 3 basis.
- IMPORTANT: every time we decide to modify our dirt bike´s development, we must be extremely cautious not to set an excessively small or large rear or front sprocket up. Such detail could cause the chain to apply excessive forcé onto the chain slider or the chain guide, potentially causing a premature attrition of the latter.
- Please, bear in mind that every element of transmission must have a simultaneous wear. It is not advisable to install new crowns and sprockets with worn chains, or new chains with worn crowns and sprockets. The duration and resistance of such components will be severely reduced.
- Last but not least: If you were to change your rear sprocket, do not forget to use a screw fixer and give the nuts the proper tightening torque, always in cross fashion.