{"product_id":"kb-m8-114-117-to-128-big-bore-conversion-piston-kit-std-mcs-993662","title":"KB, M8 114\"\/117\" to 128\" big bore conversion piston kit. STD","description":"\u003cp class=\"bb-fitment\"\u003e\u003cstrong\u003ePast op:\u003c\/strong\u003e 17-25 with 114\"\/117\" M8 engine\u003c\/p\u003e\u003cp\u003eForged Super Duty series for the Milwaukee Eight 114\" and 117\" engine for a 128\" big bore conversion. Designed to work with both oil\/water cooled engines and up to 3mm larger valves. With hard anodized crown and top ring groove to reflect heat and prevent ring to groove 'micro-welding'. The Line2Line abradable self-lubricating powder coating technique allows zero tolerance installation, final tolerance will be 0.003\". The piston creates its own perfect tolerance during run-in, the coating automatically gives the tightest possible \u0026amp; perfect piston to cylinder fit for no piston rock and best possible ring seal. \u003cbr\u003eNote: Fits 114\/117\" M8 engines with stock 4.5\" stroke. Aftermarket 4.25\" bore cylinders are required. For up to 3mm larger valves. \u003cbr\u003e- Compression ratio: 11.7:1 \u003cbr\u003e- Engine displacement: 128\" \u003cbr\u003e- Bore: 4.25\" \u003cbr\u003e- Stroke: 4.5\" \u003cbr\u003e- Ring Pack: 1.5mm, 1.5mm, 3.0mm \u003cbr\u003e- Top land: 0.23 \u003cbr\u003e- Pin Number: .927x2.250x.180c-SCR415H \u003cbr\u003e- Pin type: Floating \u003cbr\u003e- Pin Diameter: 0.927\" \u003cbr\u003e- Lock: BR8894-1 \u003cbr\u003e- Compression height: 1.083\" \u003cbr\u003e- Crown type: Dome \u003cbr\u003e- Crown (cc): -2.5 \u003cbr\u003e- Alloy: Forged 4032 alloy\u003c\/p\u003e","brand":"KB Performance Piston","offers":[{"title":"Default Title","offer_id":59226586743158,"sku":"MCS-993662","price":568.81,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1021\/6298\/9430\/files\/993662k.jpg?v=1793624222","url":"https:\/\/www.blue-bull.nl\/products\/kb-m8-114-117-to-128-big-bore-conversion-piston-kit-std-mcs-993662","provider":"Blue Bull","version":"1.0","type":"link"}