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Engine Kits

Big bore engine kits for a Harley-Davidson engine involves replacing the stock cylinders and pistons with larger ones, effectively increasing the engine's overall displacement. This modification aims to improve the overall performance of the motorcycle. The larger cylinders allow for more air and fuel to be combusted, resulting in increased power and torque. Riders often choose this upgrade to enhance acceleration, throttle response, and overall riding experience. It's a customization option for those seeking a more powerful and performance-oriented Harley-Davidson motorcycle.

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Moonshine Horsepower 131 Stage IV Upgrade Kit - Black: MHP-5055

In stock

Moonshine Horsepower 131 Stage IV Upgrade Kit: Part Number: MHP-5055 Transform your Harley-Davidson M8 Stage IV 131 SE into a powerhouse with the M...

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MHP S&S 132" M8 Power Pack - Stage I - Oil Cooled

In stock

Moonshine Horsepower S&S Cycles 132" Stage I M8 Big Bore Power Pack - No Camshaft Included Elevate your ride with the Moonshine Horsepower S...

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ARP M-Eight Cylinder Studs & Head Bolt Kit, Feuling

In stock

Milwaukee Eight CYLINDER STUD AND HEAD BOLT KIT7/16 X 6.250 STUDS W/DOWEL RING - CHROME MOLY, QTY. 8STAINLESS 12 POINT HEAD BOLTS UHL 3.215, QTY...

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Moonshine Power Kit 128, black w/o highlights, oil cooled M8

In stock

Moonshine HP Power Kit by S&S Cycles - Cylinders black w/highlights - Oil Cooled Pump & Plate - 0904-0081 We have worked directly with S&am...

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MHP M8 Game Changer CNC Cylinders 4.500"

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·      Introducing the Moonshine Horsepower M8 Game Changer CNC Cylinders. Revolutionize your engine performance with the Moonshine Horsepower Game...

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MHP 135 Piston and Cylinder Kit, Black Highlighted Cylinders

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Product Description: Moonshine Horsepower 135 Cubic Inch Piston and Cylinder Kit Elevate your Harley-Davidson engine's performance with our Moonshi...

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MHP S&S 132" M8 Power Pack - Stage II - Oil Cooled

In stock

Moonshine Horsepower S&S Cycles 132" Stage II Power Pack - MHP-492X Camshaft Kit Included Unleash the true potential of your Harley-Davidson ...

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MHP M8 Game Changer CNC Cylinders 4.375"

In stock

·      Introducing the Moonshine Horsepower M8 Game Changer CNC Cylinders. Revolutionize your engine performance with the Moonshine Horsepower Game...

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Moonshine Horsepower 131 Stage IV Upgrade Kit - Chrome: MHP-5056

In stock

Moonshine Horsepower 131 Stage IV Upgrade Kit: Part Number: MHP-5056 Transform your Harley-Davidson M8 Stage IV 131 SE into a powerhouse with the M...

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$1,910.74 - $1,910.74
$1,910.74
$1,910.74 - $1,910.74
$1,910.74