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Engine Performance Parts

The Engine Performance Parts collection covers replacement, service and upgrade choices for Harley-Davidson, American V-twin and compatible motorcycle applications. Current products cover engine components, depending on the specification and application. The detailed product pages explain compatibility, specifications and what is included.

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S&S Cycle Power Package - 128" Water Cooled, Gear Drive, Black Granite w/ Highlighted Fins and Chrome Pushrod Tubes for Various Various Harley-Davidson Motorcycles (See Fitment List) Save 5% Save %
£3,243.44
£3,243.44 - £3,243.44
£3,243.44
£3,069.90
£3,069.90 - £3,069.90
£3,069.90

S&S Cycle Power PK GR M8 BKG WTR for Harley-Davidson Touring & Trike 2017-2023

Low stock

Description114" to 128" Big Bore KitFitment 2021-2023 Harley Davidson FLHTCUTG 1868 ABS Tri Glide Ultra 114 2019-2023 Harley Davidson FLHTK 1868 AB...

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£3,243.44
£3,243.44 - £3,243.44
£3,243.44
£3,069.90
£3,069.90 - £3,069.90
£3,069.90
Save 5% Save %
Sold out
£3,601.16
£3,601.16 - £3,601.16
£3,601.16
£2,135.71
£2,135.71 - £2,135.71
£2,135.71

S&S Cycle Power PK CHN M8 BKG OIL for Harley-Davidson Touring, Softail, Dyna & Trike 2018-2025

Out of stock

DescriptionBolt on kit. No case machining requiredFitment 2018-2024 Harley Davidson FLFBS 1868 ABS Softail Fat Boy 114 2018 Harley Davidson FLFBS 1...

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£3,601.16
£3,601.16 - £3,601.16
£3,601.16
£2,135.71
£2,135.71 - £2,135.71
£2,135.71
Sold out
Sold out
£3,532.99
£3,532.99 - £3,532.99
£3,532.99
£2,372.36
£2,372.36 - £2,372.36
£2,372.36

S&S Cycle Power PK CHN M8 BKG WTR for Harley-Davidson Touring, Softail, Dyna & Trike 2017-2025

Out of stock

DescriptionBolt on kit. No case machining requiredFitment 2018-2024 Harley Davidson FLFBS 1868 ABS Softail Fat Boy 114 2018 Harley Davidson FLFBS 1...

View full details
£3,532.99
£3,532.99 - £3,532.99
£3,532.99
£2,372.36
£2,372.36 - £2,372.36
£2,372.36
Sold out
Sold out
£3,243.44 - £3,243.44
£3,243.44
£3,712.84
£3,712.84 - £3,712.84
£3,712.84

S&S Cycle 124 in. Power Package Engine Performance Kit for Various Various Harley-Davidson Motorcycles (See Fitment List)

Out of stock

107" to 124" Big Bore Kit

£3,243.44 - £3,243.44
£3,243.44
£3,712.84
£3,712.84 - £3,712.84
£3,712.84
Sold out
Save 32% Save %
£3,175.88
£3,175.88 - £3,175.88
£3,175.88
£2,163.01
£2,163.01 - £2,163.01
£2,163.01

S&S Cycle Power PK WC GD Fin-hl M8 for Harley-Davidson Touring 2017-2018

Low stock

Description107" to 124" Big Bore KitFitment 2017-2018 Harley Davidson FLHTCU 1750 ABS Electra Glide Ultra Classic 107 2017 Harley Davidson FLHTK 17...

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£3,175.88
£3,175.88 - £3,175.88
£3,175.88
£2,163.01
£2,163.01 - £2,163.01
£2,163.01
Save 32% Save %

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