{"product_id":"kb-performance-kb203-030-12cc-domed-piston-set-for-big-block-chevrolet","title":"KB Performance KB203.030 +12cc Domed Piston Set for Big Block Chevrolet","description":"\u003cp\u003eTechnical Specs: Alloy: Hypereutectic 390 Bore: 4.280'' Crankshaft Stroke: 4.000'' Connecting Rod Length: 6.135'' Deck Height: 9.800'' Compression Height: 1.645'' Pin Size: 0.990'' Pin Location: Centered Solid Dome Top: .133'' 12cc IV (Closed Chamber Head) Intake Valve Relief: 0.266'' Depth \/ 2.310'' Diameter Exhaust Valve Relief: N\/A Top Landing Height: 0.308'' Ring Grooves: 5\/64'' Top; 5\/64'' Middle; 3\/16'' Bottom Gram Weight: 710\/158 Compression Ratio: 11.0:1 w\/96.5cc Heads; 10.2:1 w\/105cc Heads; 9.9:1 w\/108cc; 9.1:1 w\/119cc Heads\u003c\/p\u003e","brand":"United Engine \u0026 Machine Co","offers":[{"title":"Default Title","offer_id":51748956602650,"sku":"SLVKB203.030","price":79.34,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0975\/8942\/8506\/files\/61DO0ENj_FL_db8b9b57-8af2-4625-9878-4e2e3e9ee41b.jpg?v=1772041875","url":"https:\/\/trybeepbeep.com\/products\/kb-performance-kb203-030-12cc-domed-piston-set-for-big-block-chevrolet","provider":"TryBeepbeep","version":"1.0","type":"link"}