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Sprockets from Rocky Mountain ATV/MC

Sprockets that are available in aluminum and steel. Find a wide selection of sprockets by Renthal, Primary Drive and more.

Latest Dirt Bike Sprockets Reviews – You could win up to $500 for reviewing products!

  • Primary Drive Front Sprocket

    Primary Drive Front Sprocket

    Jessica in WY

    Great looking 16 tooth

    Needed to lower my RPMs a bit on my 1999 KLR 650 for highway riding and didn't know if I wan't a 16 or 17 tooth. Ordered a "16t Primary Drive" brand, and a "17t Sunstar" brand. The Primary Drive sprocket measured the same width as the stock sprocket and I won't need to use any shims/spacers to make it fit like a factory sprocket, great news for me as this brand sprocket is really inexpensive and for some reason I expected it to be off. Quality looking metal too... Will be back after several thousand miles of use and abuse :)

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  • Eagle Mfg. Prevailing Torque Countershaft Nut

    Eagle Mfg. Prevailing Torque Countershaft Nut

    Jessica in WY

    Needed this on my Turtle

    Was changing out sprockets on a recently purchased 1999 KLR 650 and didn't want to mess with bending the washer over the nut nonsense that Kawasaki uses, so I spent the $ on this expensive 9th wonder of the world :) I got a range of sprockets to find what I like best, will it be a 16 tooth, or a 17 tooth as I do more road riding at 75 to 80 mph (interstate speed limit) then crawling around on the dirt at the moment.

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  • Primary Drive Rear Steel Sprocket

    Primary Drive Rear Steel Sprocket

    JUSTIN in NV


    Not amazing life, but it lasted pretty well

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  • Supersprox Stealth Rear Sprocket

    Supersprox Stealth Rear Sprocket

    Keenan in CA


    I thought this sprocket was supposed to be light. It is easily twice as heavy as the all aluminum sprocket I removed, but it is is 2 teeth smaller. Needless to say, it better last for a long time to make it worth the extra cost and weight.

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  • Primary Drive Rear Aluminum Sprocket

    Primary Drive Rear Aluminum Sprocket

    LOGAN in IN

    Had to put it to the test

    ok so i was looking at the reviews for the chain/ sprocket set and a lot of them said the aluminum sprockets chipped teeth and wore out really quick. So i had to put it to the test, so i took to the road and torqued that sprocket and chain as hard as i could. I beat the absolute snot out of it, i put at least 6 hard road hours on it. The chain barely stretched and the sprocket had next to no wear on it!! When i ordered these they were at my house NEXT day with standard shipping!!! 5/5 would easily buy again! The only thing i have to say is that i probably wouldn't but a aluminum sprocket on a 450 (probably stick with a steel)

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  • Pro X Grooved Ultralight Front Sprocket

    Pro X Grooved Ultralight Front Sprocket

    Dennis in CA

    This ones the best

    Bought a few other ones but, like this one the best

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