{"product_id":"cp-carrillo-forged-piston-kit-yamaha-yfz450-yfz450r-95mm-11-8-1-439cc-12-1-1-449cc-m1100","title":"2004-2025 Yamaha YFZ450 \/ YFZ450R - CP-Carrillo Forged Piston Kit 95mm 11.8:1 M1100","description":"\u003cp\u003eCP-Carrillo forged piston kit for the 2004-2025 Yamaha YFZ450 \/ YFZ450R. CP-Carrillo has built pistons and rods in Irvine, California since 1975 and supplies OEM and professional race programs worldwide. This is a shelf part number, not a custom order.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e✓ Fits\u003c\/strong\u003e\u003cbr\u003e2004-2025 Yamaha YFZ450 \/ YFZ450R\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e✓ Features\u003c\/strong\u003e\u003cbr\u003e2618 forged aluminum, made in Irvine California\u003cbr\u003eBore: 95mm\u003cbr\u003eStroke: 63.4mm\u003cbr\u003eCompression ratio: 11.8:1 439cc 12.1:1 449cc\u003cbr\u003eDisplacement: 449cc\u003cbr\u003eCompression height: 0.983 in\u003cbr\u003eDome\/dish volume: -8.68 cc\u003cbr\u003ePiston weight: 12.1 grams\u003cbr\u003eDual pin oilers feed twice the oil to the wrist pin\u003cbr\u003eAccumulator groove reduces ring flutter for a better seal\u003cbr\u003eBalanced within one gram, pin lock grooves machined in\u003cbr\u003eCP-Carrillo part number M1100\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e✓ What's Included\u003c\/strong\u003e\u003cbr\u003eForged piston(s)\u003cbr\u003eRing set (CPN2-3740)\u003cbr\u003eWrist pin(s) (787-2000-15CP1C)\u003cbr\u003eWire locks (787x050 SWL)\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e✓ What's NOT Included\u003c\/strong\u003e\u003cbr\u003eGaskets sold separately (Cometic YFZ450 C3066 YFZ450R C7908)\u003c\/p\u003e\u003cp\u003eShips fast from DuneGoonShop!\u003c\/p\u003e","brand":"CP-Carrillo","offers":[{"title":"Default Title","offer_id":48970716446945,"sku":"M1100-SET","price":334.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1219\/2993\/files\/Screenshot_2026-10-20_171051.png?v=1792541462","url":"https:\/\/dunegoonshop.com\/products\/cp-carrillo-forged-piston-kit-yamaha-yfz450-yfz450r-95mm-11-8-1-439cc-12-1-1-449cc-m1100","provider":"Dune Goons","version":"1.0","type":"link"}