Prox Ultralight Steel Rear Sprocket Yamaha YZ 125/250 50 80-98 WR 250 90-98
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Details
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Prox Ultralight Steel Rear Sprocket Yamaha YZ 125/250 50 80-98 WR 250 90-98
ProX Ultralight Steel Rear Sprocket
The ProX ultralight steel rear sprockets now come in a new and revised design. The new design is slightly lighter as the current ProX ultralight design and can be up to 35% lighter than another regular steel sprocket. These sprockets are all manufactured from premium quality high-strength steel and offer superior durability, even under the most extreme riding circumstances. Using the ProX ultralight steel sprockets is a great solution as they easily offer 2-3 times the lifespan of an aluminum sprocket.
The center holes are precision cut on CNC machines using tight tolerances. The mounting holes are all countersunk and cleaned for a perfect fit. Teeth are cut with a special procedure called "Diamond Cut" which keeps tolerances of overall diameter and wobble under 0.2 mm. to guarantee super-smooth running. As a finishing touch, the ProX ultralight steel sprockets come with a black color coating for extra protection and great looks.
The sprockets are machined in an ultralightweight but strong design that brings a perfect balance between strength, performance and durability.
A full range of ultralight steel Dirtbike sprockets are available in a wide variety of teeth.
ProX Ultralight Steel Rear Sprocket Features :
- Manufactured from a premium quality high-strength steel for superior durability.
- Precision CNC machined for perfect fit and lightweight design for ultimate performance.
- Black color coated for extra protection and great looks.
- Offering the perfect balance between strength, performance, and longevity.
- Full range of ultralight steel Dirtbike sprockets available in a wide variety of teeth.
| Brand | Prox |
| Season | Carryover |
| Modality | Cross/Enduro |
| Primary material | Steel |
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.
