{"product_id":"twin-cam-hot-set-up-kit-with-heads-silver-124-inch","title":"Twin Cam Hot Set-Up Kit With Heads Silver - 124 Inch","description":"\u003cp\u003eWith a silver aluminum finish. Will upgrade your stock 96\" or 103\" engine to 124\" capacity. Kit comes complete with stroker flywheels; big bore cylinder \u0026amp; flat-top piston kit that gives a 10.8:1 CR with the included 91cc high flow heads. The 640 Easy Start gear driven cams provide the lift required to let this engine breathe but insures easy turn-over with stock starter \u0026amp; battery.   Note 1: Stock cases must be machined to accept the larger 4-1\/8\" big bore cylinders. Kit adds .096\" to engine height.  Note 2: You will build a serious high performance engine. It is therefore not compatible with stock ignition and stock (too small) throttle housings. A large throttle housing; as the 558678 S\u0026amp;S 58mm single bore unit; and high performance ECU is required. Carbureted engines will require a ignition system with adjustable advance curves and large carburetor; as the S\u0026amp;S Super G or similar. Kits are machined to be compatible with stock length manifolds.  Note 3: S\u0026amp;S recommends MCS 978519 JIMS crankcase bearing insert; for 03-17 Twin Cam models; to replace the stock roller bearing for the stronger early style Timken bearing. See MCS 978517 for required JIMS tool. The correct Timken bearing can be ordered as MCS 508960 \/ OEM 9028.\u003c\/p\u003e\u003cp\u003e06-17 Dyna; 07-16 FLT\/Touring (Excl. Twin-Cooled models) (NU) \u003c\/p\u003e","brand":"S\u0026S Cycle","offers":[{"title":"Default Title","offer_id":43850380116188,"sku":"565063","price":4467.52,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0648\/6881\/0972\/products\/565072k.jpg?v=1679287232","url":"https:\/\/motosuperstore.co.uk\/products\/twin-cam-hot-set-up-kit-with-heads-silver-124-inch","provider":"Moto Superstore","version":"1.0","type":"link"}