Yamaha YFZ 450R Rebuilt Engine | Shipping + 1-Year Warranty

•  When your Yamaha YFZ 450R is down, we make sure it doesn’t stay that way for long. At REV6, we specialize in professional engine rebuilds that restore power, performance, and peace of mind.

  This is a core build engine only, which means you’ll send us your engine for the rebuild. Once you order, we ship you a padded box with pre-paid labels—no guessing, no hassle. You remove any exhaust, fueling, or electrical parts, pack up the motor, and we’ll schedule FedEx pickup right to your door.

  Once it arrives at our shop, our expert team tears it down, inspects every component, and rebuilds it to our strict standards. We don’t cut corners—this isn’t just a fix, it’s a full performance refresh.

  ✅ What’s included in your YFZ 450R rebuild?
  – Heavy-duty crankshaft assembly
  – Upgraded connecting rods
  – Decked and machined cylinder head
  – Forged piston kit
  – Replaced or reconditioned valve guides
  – Timing and oil pump chains
  – Crankshaft and balance shaft bearings
  – Complete oil and water pump service
  – Case inspection and machining
  – Transmission rebuild (if engine and transmission are married)

  We back this build with our 1-year warranty, and for just $450 more, you can opt into our 2-year no-fault warranty—no questions asked. If anything goes wrong, we’ve got your back.

  ⚙️ Built with pride. Tested with precision. Shipped nationwide.

  ---

  📦 Nationwide Shipping – Both Ways
  🛠 Contact Us
  🔒 Warranty Policy
  📚 FAQ

  📲 Follow us for builds, behind-the-scenes, and engine drop-ins:
  Instagram | YouTube | TikTok | Facebook | X

  Take action—order your REV6 YFZ 450R engine rebuild today and get back to doing what you love: riding hard.

  What does your new rebuild include?

  • – New heavy-duty crankshaft assembly
  • – Heavy-duty connecting rod assembly
  • – Fully rebuilt, upgraded, and inspected cylinder head
  • – Cylinders either replaced or machined back to specifications, depending on your setup – New forged upgraded valve assembly
  • – Decked cylinder head
  • – Replaced valve guides or inspected for proper tolerance
  • – New upgraded piston assembly
  • – Aftermarket timing chain
  • – Aftermarket oil pump chain
  • – Crankshaft bearings replaced
  • – Balance shaft bearings replaced
  • – Complete transmission rebuild (only if the transmission is married to the engine)
  • – Complete oil pump assembly
  • – Water pump mechanical seals
  • – Fully inspected and machined engine cases, tested for journal wear, cracks, holes, or excessive wear.

  Please note, this is a standardized list. The specifics of your new engine could include more or less, depending on your model.