YFZ450R X Rebuild Kit OEM Cases Wiseco Crank Stock Bore 2009–2019

SKU 265221632384

🔧 YFZ450R / YFZ450X Complete Motor Rebuild Kit – OEM Cases + Stock Bore Setup

FITS ALL YAMAHA YFZ450R & YFZ450X MODELS (2009–2019)
From the crankcases up, this kit includes everything you need to rebuild your YFZ450R or YFZ450X engine using brand new OEM cases, forged internals, and premium rebuild parts.

✅ What’s Included:

• Brand new OEM crankcases

• New aftermarket stock bore cylinder

• Wiseco forged piston

• Hi-temp piston rings

• Chrome wrist pin & circlips

• Hotrods or Wiseco crankshaft with rod

• Main bearings

• Transmission bearings

• Shift cam bearing

• Crank balancer bearings

• Water pump bearing

• Clutch arm bearings

• Complete top and bottom end gasket kit

• MLS head gasket

• Crankcase oil seal kit

• Valve stem seals

• Water pump mechanical seal

• Water pump shaft with impeller

• New oil pump

• K&N oil filter

• NGK spark plug

• Timing chain

• Full clutch kit

• Stickers

• All parts are brand new

• Runs on pump or race gas

🔥 Key Benefits:

• 🧱 OEM Quality Foundation – Start fresh with brand new crankcases

• ⚙️ Built for Power & Longevity – Forged piston + balanced rotating assembly

• 🧰 Everything in One Box – No hunting for missing pieces

• 🚨 Zero Compromise – All internals matched for peak reliability

📅 Compatibility:

✔️ Fits All YFZ450R and YFZ450X Models & Special Editions

Confirmed Fitment – 2009–2019 Models:

• YFZ450R (2009–2019)

• YFZ450RSE (2009–2019)

• YFZ450REL (2014 Team Yamaha)

• YFZ450RW (2012–2013 Custom Graphics)

• YFZ450X / XSE (2010–2011) incl. Bill Balance Edition

🛡️ Warranty & Returns:

• 1-Year Limited Warranty on qualifying components

• Studs: Lifetime warranty on failures during use only

• Cylinder: If an Alpha Cub fails during proper use, it will be replaced or repaired

• All warranties require return of failed parts for inspection—no exceptions

• We strongly recommend professional installation by a certified mechanic

• 30-Day Returns accepted on brand-new, unused parts

• Returns for buyer's remorse subject to 10% restocking fee + shipping cost deduction