{"product_id":"hot-rods-4180-stroker-crankshaft-for-yamaha-grizzly-660-and-rhino-660","title":"Hot Rods 4180 Stroker Crankshaft for Yamaha Grizzly 660 and Rhino 660","description":"\u003cp\u003eUpgrade your engine with the Hot Rods 4180 Stroker Crankshaft, a performance-focused replacement designed for select Yamaha 660 applications. This complete crankshaft assembly is factory assembled and trued to OEM specifications, providing a dependable alternative to a costly original-equipment crankshaft. It includes proven Hot Rods connecting rods, top-end bearings, and crankshaft webs for a ready-to-install solution.\u003c\/p\u003e\u003cp\u003eThe Hot Rods 4180 features increased stroke to help produce greater engine displacement and horsepower while serving as a drop-in replacement in most applications without modification. The crankshaft is CNC machined and dynamically balanced to accommodate the increased stroke, and it is designed to use the stock piston in most applications. It may also be matched with Cylinder Works Big Bore cylinders for additional displacement and performance gains.\u003c\/p\u003e\u003cp\u003eBuilt for durability, the Hot Rods 4180 uses gears manufactured to DIN Class 9 or higher quality standards. The assembly is fully rebuildable with genuine Hot Rods connecting rods and bearings, helping simplify future service and extend engine life. This manufacturer part number 4180, also identified by vendor part number 421-4180, fits 2002–2008 Yamaha YFM660FG Grizzly 4WD with IRS and 2004–2006 Yamaha YXR660F Rhino 660 models. Verify year, model, and engine configuration before installation.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eComplete Hot Rods stroker crankshaft assembly ready for installation\u003c\/li\u003e\n\u003cli\u003eManufacturer: Hot Rods\u003c\/li\u003e\n\u003cli\u003eManufacturer part number: 4180\u003c\/li\u003e\n\u003cli\u003eVendor part number: 421-4180\u003c\/li\u003e\n\u003cli\u003eIncreased stroke supports greater displacement and horsepower\u003c\/li\u003e\n\u003cli\u003eDrop-in replacement requiring no modification in most applications\u003c\/li\u003e\n\u003cli\u003eFactory assembled and trued to OEM specifications\u003c\/li\u003e\n\u003cli\u003eCNC machined and dynamically balanced for the increased stroke\u003c\/li\u003e\n\u003cli\u003eDesigned to use the stock piston in most applications\u003c\/li\u003e\n\u003cli\u003eIncludes Hot Rods connecting rods, top-end bearings, and crankshaft webs\u003c\/li\u003e\n\u003cli\u003eFully rebuildable with genuine Hot Rods connecting rods and bearings\u003c\/li\u003e\n\u003cli\u003eGears manufactured to DIN Class 9 or higher quality standards\u003c\/li\u003e\n\u003cli\u003eFitment: 2002–2008 Yamaha YFM660FG Grizzly 4WD with IRS\u003c\/li\u003e\n\u003cli\u003eFitment: 2004–2006 Yamaha YXR660F Rhino 660\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\nFitment:\u003cbr\u003e\n2002 Yamaha YFM660FG Grizzly 4WD [IRS]\u003cbr\u003e\n2003 Yamaha YFM660FG Grizzly 4WD [IRS]\u003cbr\u003e\n2004 Yamaha YFM660FG Grizzly 4WD [IRS]\u003cbr\u003e\n2004 Yamaha YXR660F Rhino 660\u003cbr\u003e\n2005 Yamaha YFM660FG Grizzly 4WD [IRS]\u003cbr\u003e\n2005 Yamaha YXR660F Rhino 660\u003cbr\u003e\n2006 Yamaha YFM660FG Grizzly 4WD [IRS]\u003cbr\u003e\n2006 Yamaha YXR660F Rhino 660\u003cbr\u003e\n2007 Yamaha YFM660FG Grizzly 4WD [IRS]\u003cbr\u003e\n2007 Yamaha YXR660F Rhino 660\u003cbr\u003e\n2008 Yamaha YFM660FG Grizzly 4WD [IRS]","brand":"HOT RODS","offers":[{"title":"Default Title","offer_id":67558366740715,"sku":"421-4180","price":636.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/ca76-572a68955fcdf_3d75650e-30ba-4ccd-be89-b8414d998726.jpg?v=1790760318","url":"https:\/\/ctracingservices.com\/products\/hot-rods-4180-stroker-crankshaft-for-yamaha-grizzly-660-and-rhino-660","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}