Latest Engine Reviews – You could win up to $500 for reviewing products!

  • Neutron Oil Filter

    Neutron Oil Filter

    CHRISTOPHER in IN

    Works good

    Fits good and I haven't had any problems.

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  • Tusk Clutch Cover Gasket

    Tusk Clutch Cover Gasket

    Kevin in CA

    not for rfs, apparently

    never understood how a gasket could be inherently "bad" but this guy would not seal on my 525. i was astonished at how much this leaked compared to the factory "ktm" gasket i purchased later, after reading reviews about how the Tusk for whatever reason wont seal a ktm. there is a huge difference in material between the two, with tusk being green fiber and ktm being something . . . .im not sure how to describe but it is i think a grey fiber with maybe a coat of silicone. i put an extra, thin layer of rtv on the ktm gasket and it leaves not a trace of oil. the tusk would drip before my eyes. im not an idiot and have been wrenching on things for a while so i cant chalk it up to "mis-tightened" bolts

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  • Hot Cams Cam Chain

    Hot Cams Cam Chain

    JON in WA

    Poor build quality in comparison to OEM

    I recently purchased the Hot Cams cam chain and was blown away that this chain is supposed to meet or exceed OEM. It is frail-looking in comparison and the quality of metal looks inferior and the links seem very loose for a new chain. The 100+ hour stock chain I was replacing had far less play and appeared to be the "new" chain when compared side-by-side. I returned it and will stick with OEM.

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  • Dirt Tricks KTM Timing Chain Tensioner

    Dirt Tricks KTM Timing Chain Tensioner

    Miguel in FL

    Incredible! No more awful noice at cold start

    The OEM timing chain tensioner is awful, since it is hydraulic, it takes some time to charge from a cold start and the engine sounds like it is going to break!! I installed the Dirt Tricks Tensioner in about 10min and the noice disappeared completely right away, now it has a better idle, it doesn´t stall on trails, it´s a night and day change, it´s a must have from the OEM!!

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  • K & N Oil Filter

    K & N Oil Filter

    Peter in IN

    K&N is the mac daddy of filters

    Can always trust K&N filters.

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  • Tusk Complete Gasket Kit

    Tusk Complete Gasket Kit

    2 strokes of genius in Colorado

    excellent quality

    I read the reviews and really didn't expect much, but thought it was worth a try. The gasket material is not cheap and does not seem to tear easily. I have not put oil in or ran the machine, but the head gasket seems to seal well and the bike has great compression. I also use a thin layer of permatex grey on the gaskets so I dont expect any leaks. I would say the kit is on par with Pro X etc.. I would buy again. I'm not sure if it is just a bike specific issue people have, but I'm happy with the quality. The bad: They come in a vacuum packed layout and are a little tough to get out. By tough I mean it took about 2 minutes to pull them out. Not a big deal, just something RMATV/Tusk might consider changing at some point. Thanks RMATV for supplying a quality product at an affordable price!!!

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Dirt Bike Engine Parts

A dirt bike engine is an incredible piece of machinery, finely tuned for the rigors of off-road thrills. It keeps your motorcycle on the go in some of the roughest terrain, whether it’s the precision of a cleverly crafted motocross track or the raw appeal of nature’s finest trails. Your dirt bike’s engine is complex and intricate. A lot goes on in there, and it needs to be kept in the best shape possible in order to produce the results you’ve come to expect. When it’s time to look for dirt bike engine parts, you know you can turn to Rocky Mountain ATV/MC.

We carry a wide variety of motorcycle engine parts. If you only need a few replacement parts, we’ve got everything from crankshaft assemblies to piston kits to oil filters. If you want to upgrade your existing parts to improve your bike’s overall power or handling, we carry parts as varied as big bore kits, flywheels and individual shims. And since we’ve got the best prices around, you don’t need to feel worried about an overwhelming engine rebuild cost. In fact, you might be surprised at how affordable it can be to make some serious enhancements to your dirt bike’s engine!

We carry the names you’d expect for dirt bike engine parts: Wiseco, Athena, Cylinder Works, Rekluse, Pro X, Hot Cams, Vertex and more. (If you check out our section for OEM parts, you can find original stock replacements as well.) If you want to replace a few shot parts, you’re in the right place. If you want to rebuild your engine to be the best motocross engine or enduro engine it can be, you’ll find what you need here.

From the simplest piston circlip to the most advanced automatic clutch kit, we’ve got you covered for all of your dirt bike engine needs. So whether you’re in the process of a complete engine rebuild or just want the best motocross engine mods, you know that there’s nowhere better than Rocky Mountain ATV/MC!

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