{"product_id":"s-s-m8-132-136-big-bore-cylinder-piston-kit-hc-8-5cc-17-25-114-m8-models-17-25-m8-models-with-s-s-923270-4-5-8-4-625-stroker-flywheels-excl-cvo-nu","title":"S\u0026S, M8 132\/136\" big bore cylinder \u0026 piston kit. HC +8.5cc — 17-25 114\" M8 Models; 17-25 M8 models with S\u0026S 923270 4-5\/8\" (4.625\" ) stroker flywheels (excl. CVO) (NU)","description":"High compression. Black cylinders without highlighted fins. With +8.5cc piston dome. Compression ratio 12.7:1 for 132\" and 13.1:1 for 136\" with stock 88cc heads. Compression ratio 12.1:1 for 132\" and 12.3:1 for 136\" with SE Extreme Port 94cc heads. Largest possible 4.320\" bore bolt-in big bore kit. 132\" (2162cc) is achieved when used with stock 114\" flywheels. 136\" (2222cc) is achieved when used with S\u0026amp;S 923270 4-5\/8\" stroker flywheels. Works with stock crankcases; case boring is not required; stock heads and retains stock engine height. Kit includes a forged 4.320\" big bore forged piston kit; 4.320\" big bore cylinders; 2 MLS (Multi-Layer-Steel) .040\" head gaskets; 2 cylinder base gaskets; 4 cylinder dowels; exhaust gaskets and an S\u0026amp;S cubic inch cam cover badge. Black powder coated finish to match the OEM finish. Note: For the 132\" kit S\u0026amp;S measured 135.51HP and 145.83 torque with stock heads; a 550 cam; stock throttle body and a high flow Stealth air cleaner kit. Note: Tuning of fuel injection and ignition may be required. Note: S\u0026amp;S advises 576972 S\u0026amp;S head bolt kit for all big bore applications. Note: 136\" is not compatible with OEM 4-5\/8\" stroke flywheels; must use S\u0026amp;S 923270 4-5\/8\" stroker flywheels. Note: Not compatible with 107\" (4.375\" stroke) engines.\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e 17-25 114\" M8 Models; 17-25 M8 models with S\u0026amp;S 923270 4-5\/8\" (4.625\" ) stroker flywheels (excl. CVO) (NU)\u003c\/p\u003e","brand":"S\u0026S","offers":[{"title":"Default Title","offer_id":54307792355655,"sku":"709939","price":2260.78,"currency_code":"EUR","in_stock":false}],"url":"https:\/\/www.chopperessentials.com\/products\/s-s-m8-132-136-big-bore-cylinder-piston-kit-hc-8-5cc-17-25-114-m8-models-17-25-m8-models-with-s-s-923270-4-5-8-4-625-stroker-flywheels-excl-cvo-nu","provider":"Chopper Essentials Co.","version":"1.0","type":"link"}