{"product_id":"je-pistons-kit-bbc-inv-dome-b-4-560-1-je-pistons","title":"JE Pistons Chevrolet Big Block Inverted-Dome Piston Kit – 4.560 in, −20 cc – 257944","description":"\u003cp\u003eJE Pistons inverted-dome forged piston kit for Chevrolet big-block applications. Part 257944 is an eight-piston set for a 555 ci combination with 4.560 in bore (+0.094 in), 4.250 in stroke, 6.385 in rod length, 9.780 in block height and 1.270 in compression height.\u003c\/p\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eApplication: Chevrolet big block; standard deck\u003c\/li\u003e\n\u003cli\u003eQuantity: eight pistons\u003c\/li\u003e\n\u003cli\u003eBore: 4.560 in (+0.094 in over 4.466 in 502 standard bore)\u003c\/li\u003e\n\u003cli\u003ePiston head: inverted dome\u003c\/li\u003e\n\u003cli\u003eDome volume: −20.0 cc\u003c\/li\u003e\n\u003cli\u003eCompression height: 1.270 in\u003c\/li\u003e\n\u003cli\u003eStroke: 4.250 in\u003c\/li\u003e\n\u003cli\u003eRod length: 6.385 in\u003c\/li\u003e\n\u003cli\u003eJE lists compression ratios of 9.0:1 with 110 cc heads, 8.6:1 with 118 cc heads and 8.3:1 with 124 cc heads\u003c\/li\u003e\n\u003cli\u003eJE includes wrist pins and double spiro locks; oil rail support is included\u003c\/li\u003e\n\u003cli\u003eRecommended ring set: J100S8-4560-5 (not stated as included)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eJE says this piston design accommodates forced induction, nitrous and angle-milled heads; valve reliefs are designed for oversized valves and long-duration cams. Confirm chamber volume, engine dimensions and clearances with your engine builder before ordering. Part number: 257944.\u003c\/p\u003e\u003ch2\u003eInstallation\u003c\/h2\u003e\u003cp\u003eHave a qualified engine builder inspect and measure components and follow JE Pistons installation guidance.\u003c\/p\u003e","brand":"JE Pistons","offers":[{"title":"Default Title","offer_id":58582628303173,"sku":"JE-257944","price":953.36,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0998\/6729\/6069\/files\/public_99e39633-9724-40a5-9042-bddb61cdc757.jpg?v=1786383720","url":"https:\/\/www.torquemonsta.store\/products\/je-pistons-kit-bbc-inv-dome-b-4-560-1-je-pistons","provider":"Torque Monsta Automotive LLP","version":"1.0","type":"link"}