fits  01-06 Softail (NU)

With a silver aluminum finish. Will upgrade your stock 88″ engine to 124″ capacity. Kit comes complete with stroker flywheels, big bore cylinder & 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 & 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 is advised for better breathing, as the 558678 S&S 58mm single bore unit. A high performance ECU and tuning is required. Carbureted engines will require a ignition system with adjustable advance curves and large carburetor, as the S&S Super G or similar. Kits are machined to be compatible with stock length manifolds. Note 3: S&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.

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Home > Parts > Engine > Complete Engines > S&S, 124″ Twin Cam Softail hot set-up kit with heads. Silver

fits  01-06 Softail (NU)

Controls both ignition and fuel injection, plugs in to stock ECU unit without any changes to wiring, fuel or ignition. RPM and throttle position inputs are used for fuel adjustments. The 250 rpm resolution and 10 throttle position columns provide 640 mapping points for fuel and another 640 for ignition timing, offering great adjustability. Software for tuning and ready made maps can be downloaded from the Dynatek website. Note: Compatible with the Dynatek DynaTune for on the fly Auto Tune options. – Allows +/-20 degrees of timing adjustment. – Adjust timing per cylinder. – Adjust timing per gear. – Raise your Rev Limit (only available on select models). – Adjust timing based on temperature or boost inputs. – Built In Launch Limiter. – Gear Position Timing. – Boost/Nitrous Retard Timing. – Pit Lane Limiter. – Additional inputs as cylinder head or water temperature, gear position and boost. – Individual cylinder mapping. – 2 position race/tour map switching on the fly (map switch not included). – Analog input, allowing the use of any 0-5 volt sensor and build an adjustment table based on its input such as boost. – Two of these features can be used at the same time: Map Switch, Quick Shifter, Pit Lane Speed Limiter, and Launch Control. – USB powered from computer.

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