This kit is currently not available for purchase online. To order, please contact DRI at 619-258-6306 and speak with one of our sales representatives who will assist you by collecting the required specifications and placing your order. 

MODEL: '06-'13 Honda TRX 450 ER and K/S models

CORES REQUIRED: Stock Cylinder is required or pay $275.00 core charge

OPTIONAL UPGRADES: Crankshaft Balance $275

DISPLACEMENT: 500.3cc (99x65)

COMPRESSION: 12.5 -1

KIT COMPONENTS: 99mm 12.5 -1 Forged Piston kit, Headgasket, Cylinder Mods (aluminum sleeve-bored-replated), 65mm Stroker Crankshaft

NOTES: Kit bolts in, No machining required. Engine must be completely torn down and re-assembled by a trained competent mechanic. DRI will install kit in your engine for $750.00 + kit and any additional parts (gaskets, seals etc)

*THIS KIT MAINTAINS THE USE OF NIKASIL COATING ON THE CYLINDER. **A STEEL BIG BORE SLEEVE IS NOT USED IN THIS KIT, ***NIKASIL COATED ALUMINUM CYLINDERS OFFER SUPERIOR PERFORMANCE AND RELIABILITY OVER CYLINDER WITH STEEL SLEEVES

ADDITIONAL PERFORMANCE RECOMMENDATIONS: THE FOLLOWING MODIFICATIONS ARE STRONGLY RECOMMENDED TO COMPLETE THE PERFORMANCE PACKAGE FOR YOUR ENGINE. Fat Boy 4 Complete Exhaust System HP4 Valve Train Kit Vortex X10 CDI