Built to dominate. All-in-one performance rebuild kit for your 660.
This full engine rebuild kit fits all 2001–2005 Yamaha Raptor 660 models and features a 102mm big bore cylinder, 4mm stroker crank, and top-tier internals like a Stage 3 Hotcam, Kibblewhite valve train, and titanium stud kit. Whether you're racing or building a serious weekend warrior, this kit gives you pro-level power and reliability in one package.
From forged pistons to high-temp seals and a Cometic MLS big bore gasket, every component is designed to handle extreme power, heat, and abuse — while offering a complete solution from crank to valve cover.
102mm Big Bore Cylinder (aftermarket)
JE or CP Forged Stroker Piston
High-Temp Piston Rings
Chrome Wristpin + Circlips
Hotrods 4mm Stroker Crankshaft with Rod (Assembled)
Main Bearings (1 pre-installed on crank)
Transmission Bearings
Shift Cam Bearing
Water Pump Bearing
Clutch Arm Needle Bearings
Counter Balancer Bearings
Stage 3 Hotcam
Kibblewhite Valve Spring Kit
Kibblewhite Black Diamond Stainless Valves
Rocker Arms & Shafts
Titanium Head Stud Kit
Complete Gasket Set
Cometic MLS Big Bore Head Gasket
Engine Seal Kit
Valve Stem Seals
Water Pump Mechanical Seal
Talon Clutch Kit
Cam Chain
NGK Spark Plug
Fits all 2001–2005 Yamaha Raptor 660 models.
We stand behind all parts we sell.
Key Terms:
General Warranty: Covers manufacturer defects only. Installation-related issues are not covered.
STUD WARRANTY: If a stud fails during use (not installation), a new full stud kit will be sent.
⚠️ This is not a DIY kit. Installation must be done by a qualified mechanic. Any warranty claim requires physical return of the part(s) for inspection. No exceptions.
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.
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