🛠️ YFZ450 / YFZ450X Complete Engine Rebuild Kit – Stock 95mm Carb Models

Restore your YFZ450 to like-new performance with this complete OEM-style rebuild kit for all carbureted YFZ450 and YFZ450X models. Featuring a new BPR cylinder, Wiseco/CP/JE forged piston, OEM-spec crankshaft, and a full gasket, seal, and clutch kit—this kit is built for reliability and performance.

Runs on pump or race gas. No case mods required. As always: assembly must be done by a qualified engine builder to retain warranty.

✅ What’s Included:

• BPR 95mm Cylinder

• Wiseco, CP, or JE Forged Piston

• Nitrite-Coated Rings, Wrist Pin, and Circlips

• Hotrods or Wiseco OEM-Style Crankshaft with Rod

• Crank Bearings

• Complete Gasket Kit + MLS Head Gasket

• Oil Seal Kit + Valve Stem Seals

• Talon Heavy-Duty Clutch Kit

• Billet Water Pump Impeller Gear

• Water Pump Bearing

📦 Fitment:

Fits all Yamaha YFZ450 (2004–2013) and YFZ450X (2010–2011) carbureted models, including:

• YFZ450 / SE / LE / SP / SP2 / V / W

• YFZ450X / XSE / Bill Balance Edition

🛡️ Warranty Info:

Includes a 1-year limited warranty against manufacturing defects.
⚠️ Not DIY: Installation must be performed by a qualified, experienced mechanic. Warranty is void if failure results from improper assembly, tuning, or maintenance. All parts must be returned for inspection to qualify for replacement—no exceptions.