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Complete Engines & Performance Kits

Browse complete engines & performance kits for Harley-Davidson, American V-twin and compatible motorcycle applications. Check the product details and stated fitment before ordering.

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S&S Cycle Power Package - 128" Water Cooled, Gear Drive, Wrinkle Black w/ NON-Highlighted Fins and Chrome Pushrod Tubes for Various Various Harley-Davidson Motorcycles (See Fitment List) Save 8% Save %
£3,817.01
£3,817.01 - £3,817.01
£3,817.01
£3,495.53
£3,495.53 - £3,495.53
£3,495.53

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

Low stock

Description114" to 128" Big Bore KitFitment 2018-2024 Harley Davidson FLFBS 1868 ABS Softail Fat Boy 114 2018 Harley Davidson FLFBS 1868 ABS Softai...

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£3,817.01
£3,817.01 - £3,817.01
£3,817.01
£3,495.53
£3,495.53 - £3,495.53
£3,495.53
Save 8% Save %
S&S Cycle Hooligan Engine Performance Kit Hooligan™ Wrinkle Black Big Bore
£1,689.75 - £1,689.75
£1,689.75
£1,689.75 - £1,689.75
£1,689.75

S&S Cycle Hooligan Engine Performance Kit - Big Bore - Wrinkle Black for Harley-Davidson Sportster 2000-2022

In stock

DescriptionHooligan Engine Performance Kit Bolt on big bore kits mean easy installation with no machining and no rebalancing S&S bolt-in cams a...

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£1,689.75 - £1,689.75
£1,689.75
£1,689.75 - £1,689.75
£1,689.75
S&S Cycle Sidewinder® Big Bore Stroker Engine Performance Kit Black
£4,682.02 - £4,682.02
£4,682.02
£4,682.02 - £4,682.02
£4,682.02

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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£4,682.02 - £4,682.02
£4,682.02
£4,682.02 - £4,682.02
£4,682.02
S&S Cycle 106" Hot Set Up® Engine Performance Kit Wrinkle Black Big Bore Sold out
£2,230.70 - £2,230.70
£2,230.70
£2,230.70 - £2,230.70
£2,230.70

S&S Cycle 106" Hot Set Up® Engine Performance Kit - Big Bore - Wrinkle Black for Harley-Davidson Touring, Softail & Dyna 2007-2017

Out of stock

Description106" Hot Set Up® Engine Performance Kit Increased fin area for better heat dissipation Increase bore size from 3.750" to 3.927" 4.375" s...

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£2,230.70 - £2,230.70
£2,230.70
£2,230.70 - £2,230.70
£2,230.70
Sold out
S&S Cycle 96" Sidewinder® Engine Performance Kit Wrinkle Black Big Bore
£2,531.01 - £2,531.01
£2,531.01
£2,531.01 - £2,531.01
£2,531.01

S&S Cycle 96" Sidewinder® Engine Performance Kit - Big Bore - Wrinkle Black for Harley-Davidson Touring, Softail, Dyna & FXR 1985-1999

In stock

Description96" Sidewinder® Engine Performance Kit Kit includes standard flywheel assembly, 3.625" Sidewinder® stroker big bore cylinder, 9.75:1 com...

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£2,531.01 - £2,531.01
£2,531.01
£2,531.01 - £2,531.01
£2,531.01
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 Softail 2000-2006

Low stock

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

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£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 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 & Trike 2006-2017

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
S&S Cycle T143 Long Block Engine T-Series Black
£10,315.87 - £10,315.87
£10,315.87
£10,315.87 - £10,315.87
£10,315.87

S&S Cycle T143 Long Block Engine - T-Series, Each - Black for Harley-Davidson Touring, Dyna & Trike 2007-2017

Low stock

DescriptionT143 Long Block Engine S&S B3 cylinder heads CNC-machined with two-bolt exhaust flanges S&S 635 easy-start gear drive cams and 1...

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£10,315.87 - £10,315.87
£10,315.87
£10,315.87 - £10,315.87
£10,315.87
S&S Cycle T143 Long Block Engine T-Series Chrome Wrinkle Black
£10,315.87 - £10,315.87
£10,315.87
£10,315.87 - £10,315.87
£10,315.87

S&S Cycle T143 Long Block Engine - T-Series, Each - Chrome / Wrinkle Black for Harley-Davidson Touring, Softail & Dyna 1999-2006

Low stock

DescriptionT143 Long Block Engine S&S B3 cylinder heads CNC-machined with two-bolt exhaust flanges S&S 635 easy-start gear drive cams and 1...

View full details
£10,315.87 - £10,315.87
£10,315.87
£10,315.87 - £10,315.87
£10,315.87
S&S Cycle T143 Long Block Engine T-Series Chrome Wrinkle Black
£10,315.87 - £10,315.87
£10,315.87
£10,315.87 - £10,315.87
£10,315.87

S&S Cycle T143 Long Block Engine - Each, T-Series - Chrome / Wrinkle Black for Harley-Davidson Touring & Trike 2006-2016

Low stock

DescriptionT143 Long Block Engine S&S B3 cylinder heads CNC-machined with two-bolt exhaust flanges S&S 635 easy-start gear drive cams and 1...

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£10,315.87 - £10,315.87
£10,315.87
£10,315.87 - £10,315.87
£10,315.87
S&S Cycle V80 Complete Assembled Engine Wrinkle Black
£6,481.75 - £6,481.75
£6,481.75
£6,481.75 - £6,481.75
£6,481.75

S&S Cycle V80 Complete Assembled Engine - Each - Wrinkle Black for Harley-Davidson Touring, Softail, Dyna & FXR 1984-1999

In stock

DescriptionV80 Complete Assembled Engine Fits in a stock frame just like a stock engine with a little more punch with S&S Super E carburetor, S...

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£6,481.75 - £6,481.75
£6,481.75
£6,481.75 - £6,481.75
£6,481.75
S&S Cycle V111 Long-Block Engine V-Series Black Long Block
£6,923.11 - £6,923.11
£6,923.11
£6,923.11 - £6,923.11
£6,923.11

S&S Cycle V111 Long-block Engine - Each, V-Series - Black for Harley-Davidson Touring, Softail, Dyna & FXR 1984-1999

Low stock

DescriptionV111 Long-Block Engine Fits '84-'99 Harley-Davidson® big twin chasis and custom frames designed for Evolution® big twin engines +30% inc...

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£6,923.11 - £6,923.11
£6,923.11
£6,923.11 - £6,923.11
£6,923.11
S&S Cycle SH93 Vintage-Style Engine SH-Series Black Natural
Sold out
£8,653.88 - £8,653.88
£8,653.88
£8,653.88 - £8,653.88
£8,653.88

S&S Cycle SH93 Vintage-style Engine - SH-Series, Each - Black / Natural for Harley-Davidson Touring, Softail, Dyna & FXR 1970-1984

Out of stock

DescriptionSH93 Vintage-Style Engine Fits '70-'99 custom chassis with alternator-style primary Includes Natural crankcase with black powder-coat cy...

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£8,653.88 - £8,653.88
£8,653.88
£8,653.88 - £8,653.88
£8,653.88
Sold out
S&S Cycle V80 Long-Block Engine V-Series Silver Long Block
£6,029.52 - £6,029.52
£6,029.52
£6,029.52 - £6,029.52
£6,029.52

S&S Cycle V80 Long-block Engine - V-Series, Each - Silver for Harley-Davidson Touring, Softail, Dyna & FXR 1983-2000

Low stock

DescriptionV80 Long-Block Engine Stock-height basic engine is direct bolt in replacement for aging 80" H-D Evolution engines Specially machined cyl...

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£6,029.52 - £6,029.52
£6,029.52
£6,029.52 - £6,029.52
£6,029.52
S&S Cycle V80 Long-Block Engine V-Series Wrinkle Black Long Block
£5,351.20 - £5,351.20
£5,351.20
£5,351.20 - £5,351.20
£5,351.20

S&S Cycle V80 Long-block Engine - Each, V-Series - Wrinkle Black for Harley-Davidson Touring, Softail, Dyna & FXR 1983-2000

In stock

DescriptionV80 Long-Block Engine Stock-height basic engine is direct bolt in replacement for aging 80" H-D Evolution engines Specially machined cyl...

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£5,351.20 - £5,351.20
£5,351.20
£5,351.20 - £5,351.20
£5,351.20
S&S Cycle P-93 Series Engine P-Series Natural Powder Coat Long Block
£9,948.51 - £9,948.51
£9,948.51
£9,948.51 - £9,948.51
£9,948.51

S&S Cycle P-93 Series Engine - Each, Long Block, P-Series - Natural / Powder Coat / Silver for Harley-Davidson Touring, Softail, Dyna & FXR 1970-1998

Low stock

DescriptionP-93 Series Engine For '70-'84 custom chassis with alternator-style primary Natural crankcases and stock-looking silver powder-coated cy...

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£9,948.51 - £9,948.51
£9,948.51
£9,948.51 - £9,948.51
£9,948.51
Trask Tornado Turbo Performance Kit Polished
£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 Pol/ss - Polished for Harley-Davidson Touring, Softail, Dyna & Trike 2017-2024

In 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
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 CHM - 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...

View full details
£7,549.18 - £7,549.18
£7,549.18
£7,549.18 - £7,549.18
£7,549.18
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...

View full details
£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...

View full details
£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...

View full details
£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...

View full details
£3,534.41 - £3,534.41
£3,534.41
£3,534.41 - £3,534.41
£3,534.41

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