You are viewing a combination of machine-specific and universal parts. Please choose a machine to display parts specific to your machine or select a part below.
User Tip: If you're unsure of your vehicle type, you may skip the machine type selection box.
The ATV drive system is what propels your quad forward, transforming the raw energy generated by the engine into a useful kinetic force, turning the wheels. However, just as with anything else on a four wheeler, individual components can wear out and need to be replaced. When the time comes to find ATV drive parts, count on Rocky Mountain ATV/MC to be your source. We carry all of the parts you need to keep your drive system in working order:
• SprocketsIn some cases, we make it easy by providing chain and sprockets kits, so you can replace both at a single time – this prevents one worn-out part from causing premature wear on a new component after you install it.
Among our drive parts, you’ll find more than just the top quality you need to keep your ATV at its optimal functioning level. The products we stock also have a distinctive visual flair – perfect for adding that custom look to your quad. Nothing shares quite the same aggressive, raw appearance as a finely crafted sprocket that has been engineered for top performance and designed with style in mind.
We also have the accessories you need to keep your ATV’s drive system in top shape. We have many options of chain lube to allow you to extend your chain’s useful life as long as possible. We also have drive tools to make working on your chain a breeze. Some of these tools are must-haves if you ride regularly and like to wrench on your own machine.
With major brands like Renthal, Supersprox, DID, Primary Drive and more, you know that you’re getting quality ATV drive parts when you shop with us. Take a moment to choose which category of parts you’d like to see, then click through and browse our selection.

Daniel in TX
Good chain roller. Appeared to be of good quality. Would be nice if it came with an extra bolt.
Read All Reviews
Joseph in AZ
Bought the Primary drive x-ring chain and sprockets. Just put on a 1000 miles on 2018 KLR 650 and havent needed to adjust once. Very strange but satisfying. Bought other sprockets for my dual sport 250 and felt like adjusted it every 200-300 miles. I put 2k on that chain and must've adjusted it 5-6 times in that timeframe. So compared to the primary drive, very satisfied with this purchase
Read All Reviews
BRYAN in AR
Absolutely perfect and looks good on the bike, and would definitely recommend this kit. Value for the quality is better than expected....
Read All Reviews
Ubaldo in TX
Replaced a 15T sprocket on my '23 KLR650 with one of these in an effort to drop the rpm's. I do all hwy riding. My KLR does not have an rpm gauge, but I could tell by sound and feel. Install was easy and didn't have to break the chain. I've only ridden about 200 miles with this new sprocket, but I do maintain my chains so I expect normal longevity, and as usual, shipping was fast!
Read All Reviews
Jesse in KY
Fit my sons KTM 50 SX great, Sprocket looks awesome! Thank you
Read All Reviews
Joshua in PA
Love the xring I don't know what's different about them but they don't stretch near as fast
Read All Reviews