107ci Big Bore Kit – Silver. Fits Twin Cam 2007-2017.

Product Details







Features & Benefits:-* Includes 3cc Dome Forged Pistons.* Includes 0.045? Head Gaskets.* 3.937? Bore.* 4-3/8? Stroke.* 10.5:1 Compression Ratio with Stock 85cc Heads.* 10.1:1 Compression Ratio with S&S 89cc Heads # SS106-3255Suggested Additional Purchase:Dual spray piston cooling jet kit # SS310-1251Tech Tips:-* Use Care during assembly to avoid damage to Cylinder Spigots.* Ring gaps must be checked & Recorded by the as sembling Technician.* Piston to Cylinder Clearance must be checked by the assembling Technician & Cylinders honed with torque plates fitted if required.* Rev Limit should be set at 2500 rpm for the first 80klm.* Rev Limit should then be set at 3500 rpm for a further 1,500klm.5t* To prevent Detonation, Over fuelling etc a Proven EFI Map is required to adjust the Factory Fuel & Timing Calibrations & bring your Engine into Equilibrium with your new Mods.* Will Not Fit with S&S 79cc Heads.Proudly Made in the USA by S&S Cycle !
MFR PART No: 910-0480

ROLLIES PART No: SS910-0480






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