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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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Trask Tornado Turbo Performance Kit Black
£7,549.18 - £7,549.18
£7,549.18
£7,549.18 - £7,549.18
£7,549.18

Trask Tornado Turbo Performance Kit - Turbo Tornado M8 BLK - Black for Harley-Davidson Touring, Softail, Dyna & Trike 2017-2024

Low stock

DescriptionTornado Turbo Performance Kit Bolt on 40%-50% more power for stock 107", 114" and 117" M-Eight motors Trask compressor and turbine housi...

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£7,549.18 - £7,549.18
£7,549.18
£7,549.18 - £7,549.18
£7,549.18
Sold out
£3,601.16
£3,601.16 - £3,601.16
£3,601.16
£3,297.87
£3,297.87 - £3,297.87
£3,297.87

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
£3,297.87
£3,297.87 - £3,297.87
£3,297.87
Sold out
Sold out
£3,532.99
£3,532.99 - £3,532.99
£3,532.99
£3,235.43
£3,235.43 - £3,235.43
£3,235.43

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...

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£3,532.99
£3,532.99 - £3,532.99
£3,532.99
£3,235.43
£3,235.43 - £3,235.43
£3,235.43
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
£3,175.88 - £3,175.88
£3,175.88
£3,635.49
£3,635.49 - £3,635.49
£3,635.49

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
£3,635.49
£3,635.49 - £3,635.49
£3,635.49
S&S Cycle 110" Power Package Performance Kit Black 585GE Engine
£3,534.41 - £3,534.41
£3,534.41
£3,534.41 - £3,534.41
£3,534.41

S&S Cycle 110" Power Package Performance Kit - 585GE, Engine - Black for Harley-Davidson Touring, Softail, Dyna & Trike 2006-2017

In stock

Description110" Power Package Performance Kit Cylinder fits to piston; no machining required TC3 cam support plate and TC3 oil pump to ensure consi...

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£3,534.41 - £3,534.41
£3,534.41
£3,534.41 - £3,534.41
£3,534.41
S&S Cycle 110" Power Package Performance Kit Silver 585GE Engine
£3,534.41 - £3,534.41
£3,534.41
£3,534.41 - £3,534.41
£3,534.41

S&S Cycle 110" Power Package Performance Kit - 585GE, Engine - Silver for Harley-Davidson Touring, Softail, Dyna & Trike 2006-2017

Low stock

Description110" Power Package Performance Kit Cylinder fits to piston; no machining required TC3 cam support plate and TC3 oil pump to ensure consi...

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£3,534.41 - £3,534.41
£3,534.41
£3,534.41 - £3,534.41
£3,534.41
S&S Cycle 110" Power Package Performance Kit Black 585CE Engine
£3,028.90 - £3,028.90
£3,028.90
£3,028.90 - £3,028.90
£3,028.90

S&S Cycle 110" Power Package Performance Kit - 585CE, Engine - Black for Harley-Davidson Touring, Softail, Dyna & Trike 2006-2017

In stock

Description110" Power Package Performance Kit Cylinder fits to piston; no machining required TC3 cam support plate and TC3 oil pump to ensure consi...

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£3,028.90 - £3,028.90
£3,028.90
£3,028.90 - £3,028.90
£3,028.90
S&S Cycle 110" Power Package Performance Kit Silver 585CE Engine
£3,534.41 - £3,534.41
£3,534.41
£3,534.41 - £3,534.41
£3,534.41

S&S Cycle 110" Power Package Performance Kit - 585CE, Engine - Silver for Harley-Davidson Touring, Softail, Dyna & Trike 2006-2017

In stock

Description110" Power Package Performance Kit Cylinder fits to piston; no machining required TC3 cam support plate and TC3 oil pump to ensure consi...

View full details
£3,534.41 - £3,534.41
£3,534.41
£3,534.41 - £3,534.41
£3,534.41
S&S Cycle 100" Power Package Engine Performance Kit Wrinkle Black 585GE
£3,534.41 - £3,534.41
£3,534.41
£3,534.41 - £3,534.41
£3,534.41

S&S Cycle 100" Power Package Engine Performance Kit - 585GE - Wrinkle Black for Harley-Davidson Touring, Softail & Dyna 1999-2006

Low stock

Description100" Power Package Engine Performance Kit Made in the USA S&S 4.000" Big-Bore Cylinders, Piston Kits, S&S 585 Easy Start® Cams, ...

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£3,534.41 - £3,534.41
£3,534.41
£3,534.41 - £3,534.41
£3,534.41
S&S Cycle 100" Power Package Engine Performance Kit Silver 585GE
£3,534.41 - £3,534.41
£3,534.41
£3,534.41 - £3,534.41
£3,534.41

S&S Cycle 100" Power Package Engine Performance Kit - 585GE - Silver for Harley-Davidson Touring, Softail & Dyna 1999-2006

Low stock

Description100" Power Package Engine Performance Kit Made in the USA S&S 4.000" Big-Bore Cylinders, Piston Kits, S&S 585 Easy Start® Cams, ...

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£3,534.41 - £3,534.41
£3,534.41
£3,534.41 - £3,534.41
£3,534.41
S&S Cycle 100" Power Package Engine Performance Kit Wrinkle Black 585CE
£3,534.41 - £3,534.41
£3,534.41
£3,534.41 - £3,534.41
£3,534.41

S&S Cycle 100" Power Package Engine Performance Kit - 585CE - Wrinkle Black for Harley-Davidson Touring, Softail & Dyna 1999-2006

Low stock

Description100" Power Package Engine Performance Kit Made in the USA S&S 4.000" Big-Bore Cylinders, Piston Kits, S&S 585 Easy Start® Cams, ...

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£3,534.41 - £3,534.41
£3,534.41
£3,534.41 - £3,534.41
£3,534.41
S&S Cycle 100" Power Package Engine Performance Kit Silver 585CE
Sold out
£3,534.41 - £3,534.41
£3,534.41
£3,534.41 - £3,534.41
£3,534.41

S&S Cycle 100" Power Package Engine Performance Kit - 585CE - Silver for Harley-Davidson Touring, Softail & Dyna 1999-2006

Out of stock

Description100" Power Package Engine Performance Kit Made in the USA S&S 4.000" Big-Bore Cylinders, Piston Kits, S&S 585 Easy Start® Cams, ...

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£3,534.41 - £3,534.41
£3,534.41
£3,534.41 - £3,534.41
£3,534.41
Sold out
S&S Cycle Sidewinder® Big Bore Stroker Engine Performance Kit Black
£3,949.54 - £3,949.54
£3,949.54
£3,949.54 - £3,949.54
£3,949.54

S&S Cycle Sidewinder® Big Bore Stroker Engine Performance Kit - Black for Harley-Davidson Touring, Softail, Dyna & FXR 1970-1984

Low stock

DescriptionSidewinder® Big Bore Stroker Engine Performance Kit Sidewinder Big Bore Stroker Kit Contains nearly everything needed to take a stock 74...

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£3,949.54 - £3,949.54
£3,949.54
£3,949.54 - £3,949.54
£3,949.54
S&S Cycle Sidewinder® Big Bore Stroker Engine Performance Kit Black
£3,949.54 - £3,949.54
£3,949.54
£3,949.54 - £3,949.54
£3,949.54

S&S Cycle Sidewinder® Big Bore Stroker Engine Performance Kit - Black for Harley-Davidson Touring, Softail, Dyna & FXR 1970-1984

Low stock

DescriptionSidewinder® Big Bore Stroker Engine Performance Kit Sidewinder Big Bore Stroker Kit Contains nearly everything needed to take a stock 74...

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£3,949.54 - £3,949.54
£3,949.54
£3,949.54 - £3,949.54
£3,949.54
S&S Cycle 124" Hot Set Up® Engine Performance Kit Powder Coated Wrinkle Black Big Bore
£7,392.44 - £7,392.44
£7,392.44
£7,392.44 - £7,392.44
£7,392.44

S&S Cycle 124" Hot Set Up® Engine Performance Kit - Big Bore - Powder Coated / Wrinkle Black for Harley-Davidson Touring, Softail & Dyna 1999-2006

Low stock

Description124" Hot Set Up® Engine Performance Kit For non-balanced Twin Cam models Converts a stock engine to 124" using the stock crankcases Incl...

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£7,392.44 - £7,392.44
£7,392.44
£7,392.44 - £7,392.44
£7,392.44
£954.60 - £954.60
£954.60
£954.60 - £954.60
£954.60

S&S Piston Kit #920-0145

In stock

DescriptionBig Bore KitIncreases bore from stockIncrease compression ratio from 9.5:1 to 11.0:1Kit includes cylinder sleeves, pistons and head gask...

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£954.60 - £954.60
£954.60
£954.60 - £954.60
£954.60

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