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Crankshaft AssembliesCrankshaft Assemblies

Dirt Bike Crankshaft Assemblies

Whether you’re in the process of a complete rebuild or just replacing a worn out part or two, proper maintenance is essential with every dirt bike engine. The crankshaft may not be the most glamorous component, but its proper functionality is vital. And when it’s that time, you know where to turn: Rocky Mountain ATV/MC!

If you prefer to replace the entire dirt bike crankshaft, we’ve got complete crankshaft assemblies for just the occasion. But if you just need to replace the motorcycle connecting rod (the piece that actually attaches the crankshaft to the piston), we’ve got those too. Regardless of your crankshaft needs, we’re the solution. (Please note that we also carry crankshaft bearings, but they are located on a separate page.)

When it comes to dirt bike crankshafts, two brands really stand out: Hot Rods and Pro X. We proudly carry both. Hot Rods crankshafts and connecting rods are known for their outstanding quality with a solid and loyal customer base. Pro X contracts with many of the same factories that build the OEM parts, so you know the lower price isn’t an indication of the part’s strength or durability. (Of course, if you prefer the actual OEM parts, we have those too.)

Regardless of your ride – YZ250, RM125, CRF250R or anything else – Rocky Mountain ATV/MC is your source for dirt bike crankshaft assemblies!

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

  • Pro X Connecting Rod Kit

    Pro X Connecting Rod Kit

    NATHAN in MO

    TRX250R PRO-X ROD

    IF YOU HAVE A TRX250R AND NEED A NEW CONNECTING ROD AND LOWER ROD BEARING, THIS IS THE KIT THAT YOU WANT TO BUY. BEARING AND ROD ARE MADE OF HIGHER QUALITY STEEL THAN THE HOTROD'S KIT OR ANY OF THE EBAY BRANDS. THIS ROD AND BEARING IS MADE IN JAPAN, AND SUPPOSEDLY IN THE SAME FACTORY THAT PRODUCED THE OEM HONDA RODS BACK IN THE 80'S.

    Read All Reviews
  • Hot Rods Complete Crankshaft Assembly

    Hot Rods Complete Crankshaft Assembly

    Dillon in WV

    Hot Rods Stock Stroke Crank

    Highly Recommend Crankshafts, We have installed them in many different bikes all with great results. There cranks are very durable and last a long time, they also offer stroker crank for certain models

    Read All Reviews
  • Hot Rods Complete Crankshaft Assembly  - Heavy Duty

    Hot Rods Complete Crankshaft Assembly - Heavy Duty

    melanie in OR

    Hot Rods Cranks

    I have put hot rods cranks in my 2 strokes as well as my 4 strokes and like them, except the one in my yz450f cracked in half in about 200 hours.

    Read All Reviews
  • Hot Rods Connecting Rod Kit - Heavy Duty

    Hot Rods Connecting Rod Kit - Heavy Duty

    Lucas in CO

    Good product

    You cant go wrong when buying a Hot Rods product. Just out of the box you can tell the quality of their work. Fit perfectly and is still running strong!

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  • Hot Rods Connecting Rod Kit

    Hot Rods Connecting Rod Kit

    AARON in WA

    Well Made Kit!

    this is a very good product. my rod lower end was getting loose so i ordered this kit. it even came in a very nice little plastic case, not a bag! all items need to replace the rod came with it, i did not have to order anything else from the dealer.

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