Precise OEM Replacement: Directly replaces factory components including Gasket Kit (3YF-11181-00-00, 3YF-11351-00-00), Cylinder (5KM-11310-00-00), Piston Ring Set (2C6-11603-00-00), Spark Plug (93450-24028-00), and Piston Kit (3YF-11631-00-X0) — ensuring seamless integration and factory-spec performance.
Complete Big Bore Engine Rebuild Kit: Includes everything for a full top-end overhaul: 1x Cylinder (102mm bore), 1x Piston Kit, 1x Piston Ring Set, 1x Gasket Kit, 1x Spark Plug, and 2x Protective Gloves — no additional parts needed.
Verified Compatibility: Engineered for Yamaha Grizzly 660 (2002–2008), Raptor 660R (2001–2005), and all YXR660FAS/FAHS/FHW (2004–2007) and YFM660FP/FS/FHP (2002–2008) models — confirmed fit for both 2WD and 4WD variants.
Precision Engineering for High Performance: Features a 102mm big bore cylinder and 22mm outer diameter piston pin for increased displacement, improved airflow, and enhanced low-to-mid range torque — ideal for aggressive riding and terrain challenges.
Hassle-Free, Ready-to-Install Design: All components are pre-matched, quality-tested, and paired with protective gloves for clean, safe handling — eliminates guesswork and accelerates installation for DIYers and professional mechanics alike.
Shipping takes place within 3-5 business days. If there is a problem with the shipment of the product, we will notify you via the email address you entered when ordering.
🚗 Is free shipping available?
We do not currently offer free shipping. However, this may be added at some point. We apologize.
🚗 How can I get a tracking number for my order?
If your order has been shipped, we will add the tracking number to your order and notify you via the email address you entered when ordering.
🚗 How do I process a return or exchange?
For returns or exchanges, please contact us within 14 days of receiving the product, along with a receipt or screenshot of the purchase, and a photo of the product with the packaging or tag intact.
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