128ci Big Bore Kit with Highlighted Fins - Black. Fits Milwaukee-Eight 2017up 114ci Engine.

Features & Benefits:-

* Upgrades Milwaukee-Eight 114ci to 128ci

* 114ci to 128ci Big Bore Kit

* 4.250" Bore

* 4.500" Stroke (4-1/2")

* Forged Pistons.

* 11.1 Compression Ratio.

* Wrinkle Black Finish.

* With Highlighted Fins.

* Bolt-on Kit.

* No Crankcase Machining Required.

* Includes Gaskets & Hardware.

Tech Tips:-

* Will Not Fit 107ci Models.

* Use Care during assembly to avoid damage to Cylinder Spigots.

* Ring gap & Piston to Cylinder Clearance should be checked.

* Rev Limit should be set at 3500 rpm for Initial Run In Period.

* Re-Calibration of Ignition Timing & Fuel Mixture is required.

Proudly Made in the USA by S&S Cycle !