The ProX grooved ultralight front sprockets are the top level quality sprockets. Manufactured from low corrosion SCM435 Ni-Chrome Molybdenum steel featuring a low carbon core to prevent breaking while the case hardened surface offers maximum wear resistance.
Manufactured from low corrosion SCM435 Ni-Chrome Molybdenum steel.
Low carbon core to prevent breaking and case hardened surface for maximum wear resistance.
Precision CNC machined for perfect fit and lightweight design for ultimate performance.
Self cleaning dirt grooves to extend chain and sprocket life to the max.
Offering the perfect balance between strength, performance and longevity.
I am very particular about front tires and front sprockets, and this Pro X Front Sprocket has the best tooth profile, mud grooves that are not too cut (less chain roller support, wear, & noise), lightening holes, durability, and finish. They look like jewellery; sprockets without mud grooves have a little bit more drag and are little bit noisier, while sprockets with deep mud grooves allow the chain to be a little more sloppy and wear a little bit quicker; I have tried other brands and I think these are the best I've used at a great price to boot.
For a XR650L get the "Primary Drive" sprocket covers the width of counter shaft splines more reducing wear in just one narrow area of the counter shaft. "Pro X' is just to thin of a sprocket not much thicker then Stock.
I put this front sprocket on with a DID Gold chain and Dirt Tricks rear and this combo lasted about 60 hours on my 450. I am very impressed with the durability. I think it helps to have all quality components together and take care of your equipment. Anyhow with those things in mind this is a very good sprocket.
Been using this spocket on my Raptor 700 for some time now and will continue to do so. These sprockets hold up well to the abuse I've put them through. Fit and finish is better than the Primary Drive sprockets I've used and I prefer these over the Renthal. I run a 15 up front with no problems on a big 3 bike. New chain and sprockets will always provide best results.
This is an excellent sprocket but, if you own a 2018 Husqvarna FE501 like I do, then you'll need to purchase the Dirt Tricks Dome Spring Washer and install it along with your stock countershaft washer in order to prevent the bike from leaking as this sprocket is too skinny for the counter shaft even though you select your specific bike on this website. So just be cautious when installing the sprocket and if the washer spins after torqueing it down it's because the bolt is bottoming out before making contact with the washer.
Needed to gear down the bike for the tight woods I ride in. Was hoping the holes would help shed some of the mud. If it does, then it must pick it up faster too. Really no noticeable difference vs a solid one
Pro-x is my go-to cs sprocket manufacturer. High quality steel lasts over 70 hours with a high quality o-ring chain and dirt-tricks rear sprocket (rear sprocket is on 3rd season & 220 hours). At a fraction of the cost of other "name brands" I stick with Pro-x
You may need to use a very thin washer behind it on a KTM 50 so the shaft seal will seal off. Renthals don't require this since they are thicker. Primary drive was thinner than this one so beware. Mud teeth are nice.
Not sure if I got a counter shaft sprocket that didn't get heat treated or if they got some soft steel but I've never seen a steel counter shaft sprocket degrade this fast, it wore out faster than the rear aluminum sprocket. Both are ProX, installed at the same time with a new chain. Unfortunately I purchased multiple sets, I may need to return them for another brand. The rear still looks great. I only use the best chains, protaper or DID gold so that isn't an issue