{"product_id":"revolution-performance-131-twin-cam-monster-big-bore-kit-black-highlight","title":"Revolution Performance 131″ Twin Cam Monster Big Bore Kit – Black with Highlighted Fins","description":"\u003cp\u003e\u003cspan\u003eFits 1999-2017  Twin Cam motorcycles with 4 5\/8 stroke and 7.669″ rods\u003c\/span\u003e\u003cspan\u003e – Aerospace-grade all-aluminum cylinder with Nickel-Silicon-Carbide (NSC) electroplated bore\u003c\/span\u003e\u003cspan\u003e – No sleeving allows for larger bore sizes\u003c\/span\u003e\u003cspan\u003e – NSC-plated cylinders have less friction for increased horsepower, lower engine temperatures and a longer lifespan\u003c\/span\u003e\u003cspan\u003e – Monster big bore kits will require case boring. Additional upgraded services recommended.\u003c\/span\u003e\u003cspan\u003e – Includes pair of all-aluminum NSC-coated bore cylinders, custom-forged pistons with high-tension rings specifically designed for SNC cylinders and a head\/base gasket set\u003c\/span\u003e\u003cspan\u003e – Replacement gasket sets available separately\u003c\/span\u003e\u003cspan\u003e – Upgraded cylinder studs and head bolts recommended\u003c\/span\u003e\u003cspan\u003e – Made in the U.S.A.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eColor\/Finish: Black with Highlighted Fins Bore Size: 4.250″ Displacement: 131″ Stroke Length: 4 5\/8″ Compression Ratio: 11.2:1 with stock heads (86 cc) and 10.6:1 with Revolution Performance Stage 3 CNC head work (95 cc)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"REVOLUTION PERFORMANCE, LLC","offers":[{"title":"Default Title","offer_id":50608289546433,"sku":"201-129W","price":1599.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/2026-09-1609_40_00-Greenshot.png?v=1789576913","url":"https:\/\/teamdreamrides.com\/products\/revolution-performance-131-twin-cam-monster-big-bore-kit-black-highlight","provider":"Team Dream Rides","version":"1.0","type":"link"}