Please select make, model and yearCrankshaft Assemblies
If you have a seized engine, or are looking to overhaul or rebuild your engine, don’t forget to replace your crankshaft. Crankshafts rarely break, but considering that they are such a major component of your bottom end, they can cause a lot of damage if they do. At Rocky Mountain ATV/MC, we carry durable, quality crankshafts to get your engine running strong again in no time.
We carry full crankshaft assembly kits and connecting rod kits that are built to OEM specifications and designed to meet or exceed OEM performance. Our kits from Hot Rods and Pro-X are designed to last the lifetime of your ATV when properly cared for.
If you would like a stock crankshaft instead, be sure to check out the OEM section of our website to get the original manufactured crankshaft and any additional accessories that you may need. Check out our selection of crankshaft and connecting rod kits for your ATV today!
Dana in MA
Don’t wait for it to let go. Tick tock tick tock. $$$$$$$$$$$Read All Reviews
Darrell in FL
After a bolt in the bottom end worked it's way loose and destroyed my crankshaft it was time for a total engine rebuild. Bought this crank shaft with the hopes that the lower price didn't mean lower quality. The crank came in spec per the Yamaha manual and fit without problems. The construction and materials used seem to be solid and so far have no issues on about 20 hours of run time. Time will tell if it holds up, so far it's been a great buy.Read All Reviews