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Engine - Engine Performance Kits

Explore engine performance kits within the engine range, with products grouped for motorcycle servicing, repair and custom work. Current products cover engine components, depending on the specification and application. Confirm model coverage, key measurements and any supporting parts required on the individual listing.

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S&S Cycle 129" Power Package for M8 for 2017-2023 Harley-Davidson Performance Kit Highlighted Fins Wrinkle Black Engine
£3,428.27 - £3,428.27
£3,428.27
£3,428.27 - £3,428.27
£3,428.27

S&S Cycle 129" Power Package for M8 - Engine, Kit - Highlighted Fins / Wrinkle Black for Harley-Davidson Touring, Softail, Dyna & Trike 2017-2023

In stock

Description129" Power Package for M8 Big-bore bolt-on kit increases 107" M8 to 129" with no case machining required 4.32" bore cylinders with 11.0:...

View full details
£3,428.27 - £3,428.27
£3,428.27
£3,428.27 - £3,428.27
£3,428.27
S&S Cycle 132" Power Package for M8 for 2017-2023 Harley-Davidson Performance Kit Highlighted Fins Wrinkle Black Engine Sold out
£3,428.27 - £3,428.27
£3,428.27
£3,428.27 - £3,428.27
£3,428.27

S&S Cycle 132" Power Package for M8 - Engine, Kit - Highlighted Fins / Wrinkle Black for Harley-Davidson Touring, Softail, Dyna & Trike 2017-2023

Out of stock

Description132" Power Package for M8 Big-bore bolt-in kit increases 114"/117" engine with 4.5" stroke M8 to 132" engine with no case machining requ...

View full details
£3,428.27 - £3,428.27
£3,428.27
£3,428.27 - £3,428.27
£3,428.27
Sold out
S&S Cycle 132" Power Package for M8 for 2017-2023 Harley-Davidson Performance Kit Non-Highlighted Fins Wrinkle Black Engine
£3,428.27 - £3,428.27
£3,428.27
£3,428.27 - £3,428.27
£3,428.27

S&S Cycle 132" Power Package for M8 - Kit, Engine for Harley-Davidson Touring, Softail, Dyna & Trike 2017-2023

Low stock

Description132" Power Package for M8 Big-bore bolt-in kit increases 114"/117" engine with 4.5" stroke M8 to 132" engine with no case machining requ...

View full details
£3,428.27 - £3,428.27
£3,428.27
£3,428.27 - £3,428.27
£3,428.27
S&S Cycle 132" Power Package for M8 for 2017-2023 Harley-Davidson Performance Kit Black Granite Highlighted Fins Engine
£3,428.27 - £3,428.27
£3,428.27
£3,428.27 - £3,428.27
£3,428.27

S&S Cycle 132" Power Package for M8 - Engine, Kit - Black Granite / Highlighted Fins for Harley-Davidson Touring, Softail, Dyna & Trike 2017-2023

Low stock

Description132" Power Package for M8 Big-bore bolt-in kit increases 114"/117" engine with 4.5" stroke M8 to 132" engine with no case machining requ...

View full details
£3,428.27 - £3,428.27
£3,428.27
£3,428.27 - £3,428.27
£3,428.27
S&S Cycle 132" Power Package for M8 for 2017-2025 Harley-Davidson Performance Kit Highlighted Fins Wrinkle Black Engine
£3,639.48 - £3,639.48
£3,639.48
£3,639.48 - £3,639.48
£3,639.48

S&S Cycle 132" Power Package for M8 - Kit, Engine - Highlighted Fins / Wrinkle Black for Harley-Davidson Touring & Trike 2017-2025

Low stock

Description132" Power Package for M8 Big-bore bolt-in kit increases 114"/117" engine with 4.5" stroke M8 to 132" engine with no case machining requ...

View full details
£3,639.48 - £3,639.48
£3,639.48
£3,639.48 - £3,639.48
£3,639.48
S&S Cycle 132" Power Package for M8 for 2017-2025 Harley-Davidson Performance Kit Black Granite Highlighted Fins Engine
£3,639.48 - £3,639.48
£3,639.48
£3,639.48 - £3,639.48
£3,639.48

S&S Cycle 132" Power Package for M8 - Kit, Engine - Black Granite / Highlighted Fins for Harley-Davidson Touring & Trike 2017-2025

Low stock

Description132" Power Package for M8 Big-bore bolt-in kit increases 114"/117" engine with 4.5" stroke M8 to 132" engine with no case machining requ...

View full details
£3,639.48 - £3,639.48
£3,639.48
£3,639.48 - £3,639.48
£3,639.48
S&S Cycle 129" Power Package for M8 for 2017-2023 Harley-Davidson Performance Kit Highlighted Fins Wrinkle Black Engine
£3,639.48 - £3,639.48
£3,639.48
£3,639.48 - £3,639.48
£3,639.48

S&S Cycle 129" Power Package for M8 - Engine, Kit - Highlighted Fins / Wrinkle Black for Harley-Davidson Touring, Softail, Dyna & Trike 2017-2023

Low stock

Description129" Power Package for M8 Big-bore bolt-on kit increases 107" M8 to 129" with no case machining required 4.32" bore cylinders with 11.0:...

View full details
£3,639.48 - £3,639.48
£3,639.48
£3,639.48 - £3,639.48
£3,639.48
S&S Cycle 129" Power Package for M8 for 2017-2023 Harley-Davidson Performance Kit Highlighted Fins Wrinkle Black Engine
£3,639.48 - £3,639.48
£3,639.48
£3,639.48 - £3,639.48
£3,639.48

S&S Cycle 129" Power Package for M8 - Kit, Engine - Highlighted Fins / Wrinkle Black for Harley-Davidson Touring, Softail, Dyna & Trike 2017-2023

Low stock

Description129" Power Package for M8 Big-bore bolt-on kit increases 107" M8 to 129" with no case machining required 4.32" bore cylinders with 11.0:...

View full details
£3,639.48 - £3,639.48
£3,639.48
£3,639.48 - £3,639.48
£3,639.48
S&S Cycle 129" Power Package for M8 for 2017-2023 Harley-Davidson Performance Kit Non-Highlighted Fins Wrinkle Black Engine
£3,639.48 - £3,639.48
£3,639.48
£3,639.48 - £3,639.48
£3,639.48

S&S Cycle 129" Power Package for M8 - Engine, Kit for Harley-Davidson Touring, Softail, Dyna & Trike 2017-2023

Low stock

Description129" Power Package for M8 Big-bore bolt-on kit increases 107" M8 to 129" with no case machining required 4.32" bore cylinders with 11.0:...

View full details
£3,639.48 - £3,639.48
£3,639.48
£3,639.48 - £3,639.48
£3,639.48
S&S Cycle 132" Power Package for M8 for 2017-2023 Harley-Davidson Performance Kit Highlighted Fins Wrinkle Black Engine
£3,639.48 - £3,639.48
£3,639.48
£3,639.48 - £3,639.48
£3,639.48

S&S Cycle 132" Power Package for M8 - Engine, Kit - Highlighted Fins / Wrinkle Black for Harley-Davidson Touring, Softail, Dyna & Trike 2017-2023

Low stock

Description132" Power Package for M8 Big-bore bolt-in kit increases 114"/117" engine with 4.5" stroke M8 to 132" engine with no case machining requ...

View full details
£3,639.48 - £3,639.48
£3,639.48
£3,639.48 - £3,639.48
£3,639.48
S&S Cycle 132" Power Package for M8 for 2017-2023 Harley-Davidson Performance Kit Non-Highlighted Fins Wrinkle Black Engine
Sold out
£3,639.48 - £3,639.48
£3,639.48
£3,639.48 - £3,639.48
£3,639.48

S&S Cycle 132" Power Package for M8 - Kit, Engine for Harley-Davidson Touring, Softail, Dyna & Trike 2017-2023

Out of stock

Description132" Power Package for M8 Big-bore bolt-in kit increases 114"/117" engine with 4.5" stroke M8 to 132" engine with no case machining requ...

View full details
£3,639.48 - £3,639.48
£3,639.48
£3,639.48 - £3,639.48
£3,639.48
Sold out
S&S Cycle 132" Power Package for M8 for 2017-2023 Harley-Davidson Performance Kit Black Granite Highlighted Fins Engine
£3,639.48 - £3,639.48
£3,639.48
£3,639.48 - £3,639.48
£3,639.48

S&S Cycle 132" Power Package for M8 - Kit, Engine - Black Granite / Highlighted Fins for Harley-Davidson Touring, Softail, Dyna & Trike 2017-2023

Low stock

Description132" Power Package for M8 Big-bore bolt-in kit increases 114"/117" engine with 4.5" stroke M8 to 132" engine with no case machining requ...

View full details
£3,639.48 - £3,639.48
£3,639.48
£3,639.48 - £3,639.48
£3,639.48
S&S Cycle 132" High Compression/ 136" Big Bore Kit for 2019-2025 Harley-Davidson Black Granite Highlighted Fins
£1,535.25 - £1,535.25
£1,535.25
£1,535.25 - £1,535.25
£1,535.25

S&S Cycle 132" High Compression / 136" Big Bore Kit - Black Granite / Highlighted Fins for Harley-Davidson Touring, Softail, Dyna & Trike 2019-2025

In stock

Description132" High Compression / 136" Big Bore Kit 132" high compression kit will work on 114"/117" motors with 4-1/2" stroke flywheels only To a...

View full details
£1,535.25 - £1,535.25
£1,535.25
£1,535.25 - £1,535.25
£1,535.25
S&S Cycle 132" High Compression/ 136" Big Bore Kit for 2019-2025 Harley-Davidson Black Non-Highlighted Fins
£1,535.25 - £1,535.25
£1,535.25
£1,535.25 - £1,535.25
£1,535.25

S&S Cycle 132" High Compression / 136" Big Bore Kit - Black / Non-Highlighted Fins for Harley-Davidson Touring, Softail, Dyna & Trike 2019-2025

In stock

Description132" High Compression / 136" Big Bore Kit 132" high compression kit will work on 114"/117" motors with 4-1/2" stroke flywheels only To a...

View full details
£1,535.25 - £1,535.25
£1,535.25
£1,535.25 - £1,535.25
£1,535.25
S&S Cycle 132" High Compression/ 136" Big Bore Kit for 2019-2025 Harley-Davidson Black Highlighted Fins
£1,535.25 - £1,535.25
£1,535.25
£1,535.25 - £1,535.25
£1,535.25

S&S Cycle 132" High Compression / 136" Big Bore Kit - Black / Highlighted Fins for Harley-Davidson Touring, Softail, Dyna & Trike 2019-2025

In stock

Description132" High Compression / 136" Big Bore Kit 132" high compression kit will work on 114"/117" motors with 4-1/2" stroke flywheels only To a...

View full details
£1,535.25 - £1,535.25
£1,535.25
£1,535.25 - £1,535.25
£1,535.25
S&S Cycle 132" High Compression/ 136" Big Bore Kit for 2019-2025 Harley-Davidson Black Granite Highlighted Fins
£1,535.25 - £1,535.25
£1,535.25
£1,535.25 - £1,535.25
£1,535.25

S&S Cycle 132" High Compression / 136" Big Bore Kit - Black Granite / Highlighted Fins for Harley-Davidson Touring, Softail, Dyna & Trike 2019-2025

In stock

Description132" High Compression / 136" Big Bore Kit 132" high compression kit will work on 114"/117" motors with 4-1/2" stroke flywheels only To a...

View full details
£1,535.25 - £1,535.25
£1,535.25
£1,535.25 - £1,535.25
£1,535.25
S&S Cycle 132" High Compression/ 136" Big Bore Kit for 2019-2025 Harley-Davidson Black Non-Highlighted Fins
£1,535.25 - £1,535.25
£1,535.25
£1,535.25 - £1,535.25
£1,535.25

S&S Cycle 132" High Compression / 136" Big Bore Kit - Black / Non-Highlighted Fins for Harley-Davidson Touring, Softail, Dyna & Trike 2019-2025

In stock

Description132" High Compression / 136" Big Bore Kit 132" high compression kit will work on 114"/117" motors with 4-1/2" stroke flywheels only To a...

View full details
£1,535.25 - £1,535.25
£1,535.25
£1,535.25 - £1,535.25
£1,535.25
S&S Cycle 132" High Compression/ 136" Big Bore Kit for 2019-2025 Harley-Davidson Black Highlighted Fins
£1,535.25 - £1,535.25
£1,535.25
£1,535.25 - £1,535.25
£1,535.25

S&S Cycle 132" High Compression / 136" Big Bore Kit - Black / Highlighted Fins for Harley-Davidson Touring, Softail, Dyna & Trike 2019-2025

In stock

Description132" High Compression / 136" Big Bore Kit 132" high compression kit will work on 114"/117" motors with 4-1/2" stroke flywheels only To a...

View full details
£1,535.25 - £1,535.25
£1,535.25
£1,535.25 - £1,535.25
£1,535.25
S&S Cycle 124" Power Package for 2017-2025 Harley-Davidson Performance Kit Black Highlighted Fins Big Bore
£3,639.48 - £3,639.48
£3,639.48
£3,639.48 - £3,639.48
£3,639.48

S&S Cycle 124" Power Package - Big Bore, Kit - Black / Highlighted Fins for Harley-Davidson Touring & Trike 2017-2025

Low stock

Description124" Power Package Bolt-on kit With updated fins No case machining required Forged pistons Made in the USA Includes oil pump/cam plate, ...

View full details
£3,639.48 - £3,639.48
£3,639.48
£3,639.48 - £3,639.48
£3,639.48
S&S Cycle 124" Power Package for 2017-2025 Harley-Davidson Performance Kit Black Highlighted Fins Big Bore
£3,428.27 - £3,428.27
£3,428.27
£3,428.27 - £3,428.27
£3,428.27

S&S Cycle 124" Power Package - Big Bore, Kit - Black / Highlighted Fins for Harley-Davidson Touring & Trike 2017-2025

Low stock

Description124" Power Package Bolt-on kit With updated fins No case machining required Forged pistons Made in the USA Includes oil pump/cam plate, ...

View full details
£3,428.27 - £3,428.27
£3,428.27
£3,428.27 - £3,428.27
£3,428.27
S&S Cycle 124" Power Package for 2017-2025 Harley-Davidson Performance Kit Black Highlighted Fins Big Bore
Sold out
£3,428.27 - £3,428.27
£3,428.27
£3,428.27 - £3,428.27
£3,428.27

S&S Cycle 124" Power Package - Big Bore, Kit - Black / Highlighted Fins for Harley-Davidson Touring & Trike 2017-2025

Out of stock

Description124" Power Package Bolt-on kit With updated fins No case machining required Forged pistons Made in the USA Includes oil pump/cam plate, ...

View full details
£3,428.27 - £3,428.27
£3,428.27
£3,428.27 - £3,428.27
£3,428.27
Sold out
S&S Cycle 128" Power Package for 2017-2025 Harley-Davidson Performance Kit Black Highlighted Fins
£3,639.48 - £3,639.48
£3,639.48
£3,639.48 - £3,639.48
£3,639.48

S&S Cycle 128" Power Package - Kit - Black / Highlighted Fins for Harley-Davidson Touring & Trike 2017-2025

Low stock

Description128" Power Package 114" to 128" big bore kit; 114" and 117" CVO to 128" big bore kit Bolt-in kit, case maching not required Forged pisto...

View full details
£3,639.48 - £3,639.48
£3,639.48
£3,639.48 - £3,639.48
£3,639.48
S&S Cycle 128" Power Package for 2017-2025 Harley-Davidson Performance Kit Black Granite Highlighted Fins
£3,566.66 - £3,566.66
£3,566.66
£3,566.66 - £3,566.66
£3,566.66

S&S Cycle 128" Power Package - Kit - Black Granite / Highlighted Fins for Harley-Davidson Touring & Trike 2017-2025

Low stock

Description128" Power Package 114" to 128" big bore kit; 114" and 117" CVO to 128" big bore kit Bolt-in kit, case maching not required Forged pisto...

View full details
£3,566.66 - £3,566.66
£3,566.66
£3,566.66 - £3,566.66
£3,566.66
S&S Cycle 128" Power Package for 2017-2025 Harley-Davidson Performance Kit Black Highlighted Fins
£3,428.27 - £3,428.27
£3,428.27
£3,428.27 - £3,428.27
£3,428.27

S&S Cycle 128" Power Package - Kit - Black / Highlighted Fins for Harley-Davidson Touring & Trike 2017-2025

Low stock

Description128" Power Package 114" to 128" big bore kit; 114" and 117" CVO to 128" big bore kit Bolt-in kit, case maching not required Forged pisto...

View full details
£3,428.27 - £3,428.27
£3,428.27
£3,428.27 - £3,428.27
£3,428.27

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