Oct 2, 2005 · A forum community dedicated to Yamaha YFZ owners and enthusiasts. Come join the discussion about performance, modifications, troubleshooting, maintenance, classifieds, and more! Show Less

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: '04 …

FITS ALL YAMAHA YFZ450 MODELS AND YEARS CARB MODEL ONLY! No modification of any kind is required to use this kit. Piston uses pump or race gas. Everything is new in the original packaging and covered by warranty*

Complete 500cc big bore stroker for all Yamaha YFZ450 carb models 98mm BPR big bore cylinder 98mm Wiseco JE or CP big bore forged piston Nitrite c... View full details

Complete stock rebuild including cylinder head valve job with the following new parts: BPR 98mm big bore cylinder. Wiseco JE of CP forged pump gas piston. Hotrods +3mm stroker crankshaft with rod. Lead time is about 6 weeks from the date we receive your engine.

Apr 6, 2009 · JSR builds the biggest bore + strokes for the yfz that I know of. However Max Power did make a 555cc but said they would not sell it to the public as it would not hold together for even 300ft. "Rider Mod" FTW!

Yamaha YFZ 500cc Complete Big Bore Kit (100mm Bore) $ 895. Yamaha YFZR 500cc Complete Big Bore Kit (100mm Bore) $ 895. YFZ450 100mm Piston Kit $ 299. KTM 450 97mm 14.5:1 Piston Kit $ 345. YFZ 450 04-13 (carb model) 100mm Big Bore Cylinder $ 450. YFZR 2009- Present 100mm Cylinder $ 450. YFZ450 100mm Gasket Kit $ …

Mar 11, 2025 · YAMHA YFZ450 Big Bore Stroker 500cc Engine Rebuild Kit - Ultimate Performance Upgrade for Yamaha YFZ450 Carb Models. Unleash the full potential of your Yamaha YFZ450 with our Complete 500cc Big Bore Stroker Engine Rebuild Kit!

Mar 24, 2025 · Complete 500cc 98mm CP Carrillo / Hotrods Big Bore Stroker Motor Rebuild Kit. CP Carrillo 98mm 12:1 Pump Gas Piston Kit. Athena 98mm Nikasil Plated Cylinder. Hotrods +3mm Stroker Crank. Fits Yamaha YFZ450 Carbureted Models.

Nov 28, 2024 · 98mm NEW DESIGN big bore cylinder. Hotrods +3mm stroker crank with rod. FITS ALL YAMAHA YFZ450 MODELS AND YEARS CARB MODEL ONLY! Warranty: This product is NOT DIY and it is the responsibility of the person installing and tuning the parts to ensure they work correctly.