Honda TRX400EX 465cc Big Bore Stroker Engine Kit (1999–2004)
Honda TRX400EX 465cc Big Bore Stroker Engine Kit (1999–2004)
Honda TRX400EX 465cc Big Bore Stroker Engine Kit (1999–2004)
Honda TRX400EX 465cc Big Bore Stroker Engine Kit (1999–2004)
Honda TRX400EX 465cc Big Bore Stroker Engine Kit (1999–2004)
Honda TRX400EX 465cc Big Bore Stroker Engine Kit (1999–2004)
Honda TRX400EX 465cc Big Bore Stroker Engine Kit (1999–2004)
Honda TRX400EX 465cc Big Bore Stroker Engine Kit (1999–2004)
Honda TRX400EX 465cc Big Bore Stroker Engine Kit (1999–2004)
Honda TRX400EX 465cc Big Bore Stroker Engine Kit (1999–2004)
Honda TRX400EX 465cc Big Bore Stroker Engine Kit (1999–2004)

Honda TRX400EX 465cc Big Bore Stroker Engine Kit (1999–2004)

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🔥 Honda TRX400EX 465cc Big Bore +4mm Stroker Engine Rebuild Kit (1999–2004)

🛠️ Ready to turn your 400EX into a 465cc monster? This complete bolt-on engine rebuild kit is designed for serious riders who want big power gains with no case machining. Built with premium components from CP Carrillo, Hot Rods, Cometic, and more.

✅ What’s Included

  • New BPRATV 89mm Cylinder (1-Year Warranty)

  • BPRATV Custom CP Carrillo Forged Stroker Piston Kit

  • Hi-Temp Piston Rings, DLC-Coated Wrist Pin, Circlips

  • Hot Rods +4mm Stroker Crankshaft with Connecting Rod

  • SKF or Hot Rods Main Crank Bearings*

  • Complete Transmission Bearing Kit (SKF, Koyo, NTN, Hot Rods, Nachi, or OEM*)

  • Heavy Duty Cam Chain

  • Cometic Big Bore MLS Head Gasket

  • Complete Gasket Kit

  • Complete Engine Oil Seal Kit

  • BPRATV Titanium MAXLOCK Heavy Duty Head Stud Kit

  • NGK Spark Plug

📦 Fitment
Fits all Honda TRX400EX models and submodels from:

  • 1999

  • 2000

  • 2001

  • 2002

  • 2003

  • 2004

🛡️ Warranty Info
All parts are brand new in original packaging. Manufacturer warranties apply where listed. This is a bolt-on kit that requires no machining. Runs on pump or race gas.

We ship next day most of the time. Modquad parts are shipped Monday-Thursday. Engine Kits are 3-5 business days.

We don't do backorder! If your items has already sold you will be notified immediately and you money refunded on the spot.

Sold items are removed daily.

If you see it on this website, it is 100% in stock unless it just sold before you clicked buy.

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