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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 MK136 Engine with 550G Cam for 2018-2024 Harley-Davidson
£11,203.91 - £11,203.91
£11,203.91
£11,203.91 - £11,203.91
£11,203.91

S&S Cycle Mk136 Black Edition Engine - Each - Black / Powder Coat for Harley-Davidson Softail, Dyna & FXR 2018-2024

In stock

DescriptionMK136 Engine with 550G Cam Black Edition engine 550G camshaft for oil cooled Made in the USA Closed course competition use only. Fitment...

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£11,203.91 - £11,203.91
£11,203.91
£11,203.91 - £11,203.91
£11,203.91
S&S Cycle MK136 Black Edition Engine with 550G Cam for 2017-2023 Harley-Davidson Powder Coat Race
£10,759.19 - £10,759.19
£10,759.19
£10,759.19 - £10,759.19
£10,759.19

S&S Cycle Mk136 Black Edition Engine with 550G Cam - Race, Each - Black / Powder Coat for Harley-Davidson Touring & Trike 2017-2023

Low stock

DescriptionMK136 Black Edition Engine with 550G Cam Cylinder Heads: High-flow cylinder heads with premium seats, guides, valves, springs, and seals...

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£10,759.19 - £10,759.19
£10,759.19
£10,759.19 - £10,759.19
£10,759.19
S&S Cycle T124 Low Compression Long Block Engine for 2007-2016 Harley-Davidson T-Series Stone Grey Sold out
£8,849.35 - £8,849.35
£8,849.35
£8,849.35 - £8,849.35
£8,849.35

S&S Cycle T124 Low Compression Long Block Engine - T-Series, Each - Stone Gray for Harley-Davidson Touring 2007-2016

Out of stock

DescriptionT124 Low Compression Long Block Engine Includes Super Stock™ heads, T2 crankcase, high flow oil pump, cam cover and easy start 585 gear ...

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£8,849.35 - £8,849.35
£8,849.35
£8,849.35 - £8,849.35
£8,849.35
Sold out
S&S Cycle T124 High Compression Long Block Engine for 2007-2016 Harley-Davidson T-Series Stone Grey Sold out
£8,849.35 - £8,849.35
£8,849.35
£8,849.35 - £8,849.35
£8,849.35

S&S Cycle T124 High Compression Long Block Engine - Each, T-Series - Stone Gray for Harley-Davidson Touring 2007-2016

Out of stock

DescriptionT124 High Compression Long Block Engine High compression Oil line installation kit required No fuel system or ignition systems included ...

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£8,849.35 - £8,849.35
£8,849.35
£8,849.35 - £8,849.35
£8,849.35
Sold out
S&S Cycle V124 Long Block Engine for 1984-1999 Harley-Davidson Chrome Natural
£8,544.64 - £8,544.64
£8,544.64
£8,544.64 - £8,544.64
£8,544.64

S&S Cycle V124 Long Block Engine - Each - Chrome / Natural for Harley-Davidson Touring, Softail, Dyna & FXR 1984-1999

Low stock

DescriptionV124 Long Block Engine For '84-'99 Evolution Big Twin or '70-'99 custom chasis with alternator-style primary Specially machined cylinder...

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£8,544.64 - £8,544.64
£8,544.64
£8,544.64 - £8,544.64
£8,544.64
S&S Cycle V124 Long Block Engine for 1984-1999 Harley-Davidson Chrome Wrinkle Black
£8,235.80 - £8,235.80
£8,235.80
£8,235.80 - £8,235.80
£8,235.80

S&S Cycle V124 Long Block Engine - Each - Chrome / Wrinkle Black for Harley-Davidson Touring, Softail, Dyna & FXR 1984-1999

In stock

DescriptionV124 Long Block Engine For '84-'99 Evolution Big Twin or '70-'99 custom chasis with alternator-style primary Specially machined cylinder...

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£8,235.80 - £8,235.80
£8,235.80
£8,235.80 - £8,235.80
£8,235.80
S&S Cycle V124 Long Block Engine for 1984-1999 Harley-Davidson Black
£8,544.64 - £8,544.64
£8,544.64
£8,544.64 - £8,544.64
£8,544.64

S&S Cycle V124 Long Block Engine - Each - Black for Harley-Davidson Touring, Softail, Dyna & FXR 1984-1999

Low stock

DescriptionV124 Long Block Engine For '84-'99 Evolution Big Twin or '70-'99 custom chasis with alternator-style primary Specially machined cylinder...

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£8,544.64 - £8,544.64
£8,544.64
£8,544.64 - £8,544.64
£8,544.64
S&S Cycle V111 Long-Block Engine for 1984-1999 Harley-Davidson V-Series Natural Long Block
Sold out
£8,235.80 - £8,235.80
£8,235.80
£8,235.80 - £8,235.80
£8,235.80

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

Out of 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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£8,235.80 - £8,235.80
£8,235.80
£8,235.80 - £8,235.80
£8,235.80
Sold out
S&S Cycle Big Bore Kit
£939.70 - £939.70
£939.70
£939.70 - £939.70
£939.70

S&S Cycle Big Bore 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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£939.70 - £939.70
£939.70
£939.70 - £939.70
£939.70
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 %
S&S Cycle Hooligan Engine Performance Kit Hooligan™ Wrinkle Black Big Bore
£1,961.12 - £1,961.12
£1,961.12
£1,961.12 - £1,961.12
£1,961.12

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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£1,961.12 - £1,961.12
£1,961.12
£1,961.12 - £1,961.12
£1,961.12
S&S Cycle 106" Hot Set Up® Engine Performance Kit Wrinkle Black Big Bore
Sold out
£2,653.66 - £2,653.66
£2,653.66
£2,653.66 - £2,653.66
£2,653.66

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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£2,653.66 - £2,653.66
£2,653.66
£2,653.66 - £2,653.66
£2,653.66
Sold out
S&S Cycle 96" Sidewinder® Engine Performance Kit Wrinkle Black Big Bore
£2,937.47 - £2,937.47
£2,937.47
£2,937.47 - £2,937.47
£2,937.47

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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£2,937.47 - £2,937.47
£2,937.47
£2,937.47 - £2,937.47
£2,937.47
S&S Cycle 124" Hot Set Up® Engine Performance Kit Powder Coated Wrinkle Black Big Bore
£8,794.12 - £8,794.12
£8,794.12
£8,794.12 - £8,794.12
£8,794.12

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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£8,794.12 - £8,794.12
£8,794.12
£8,794.12 - £8,794.12
£8,794.12
S&S Cycle 124" Hot Set Up® Engine Performance Kit Powder Coated Wrinkle Black Big Bore
£8,794.12 - £8,794.12
£8,794.12
£8,794.12 - £8,794.12
£8,794.12

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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£8,794.12 - £8,794.12
£8,794.12
£8,794.12 - £8,794.12
£8,794.12
S&S Cycle T143 Long Block Engine T-Series Black
£12,271.86 - £12,271.86
£12,271.86
£12,271.86 - £12,271.86
£12,271.86

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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£12,271.86 - £12,271.86
£12,271.86
£12,271.86 - £12,271.86
£12,271.86
S&S Cycle T143 Long Block Engine T-Series Chrome Wrinkle Black
£12,271.86 - £12,271.86
£12,271.86
£12,271.86 - £12,271.86
£12,271.86

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
£12,271.86 - £12,271.86
£12,271.86
£12,271.86 - £12,271.86
£12,271.86
S&S Cycle T143 Long Block Engine T-Series Chrome Wrinkle Black
£12,271.86 - £12,271.86
£12,271.86
£12,271.86 - £12,271.86
£12,271.86

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...

View full details
£12,271.86 - £12,271.86
£12,271.86
£12,271.86 - £12,271.86
£12,271.86
S&S Cycle V80 Complete Assembled Engine Wrinkle Black
£7,710.75 - £7,710.75
£7,710.75
£7,710.75 - £7,710.75
£7,710.75

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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£7,710.75 - £7,710.75
£7,710.75
£7,710.75 - £7,710.75
£7,710.75
S&S Cycle V111 Long-Block Engine V-Series Black Long Block
£8,235.80 - £8,235.80
£8,235.80
£8,235.80 - £8,235.80
£8,235.80

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...

View full details
£8,235.80 - £8,235.80
£8,235.80
£8,235.80 - £8,235.80
£8,235.80
S&S Cycle SH93 Vintage-Style Engine SH-Series Black Natural
Sold out
£10,294.74 - £10,294.74
£10,294.74
£10,294.74 - £10,294.74
£10,294.74

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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£10,294.74 - £10,294.74
£10,294.74
£10,294.74 - £10,294.74
£10,294.74
Sold out
S&S Cycle V80 Long-Block Engine V-Series Silver Long Block
£7,172.78 - £7,172.78
£7,172.78
£7,172.78 - £7,172.78
£7,172.78

S&S Cycle V80 Long-block Engine - V-Series, Each - Silver 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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£7,172.78 - £7,172.78
£7,172.78
£7,172.78 - £7,172.78
£7,172.78
S&S Cycle V80 Long-Block Engine V-Series Wrinkle Black Long Block
£6,183.80 - £6,183.80
£6,183.80
£6,183.80 - £6,183.80
£6,183.80

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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£6,183.80 - £6,183.80
£6,183.80
£6,183.80 - £6,183.80
£6,183.80
S&S Cycle P-93 Series Engine P-Series Natural Powder Coat Long Block
£11,834.85 - £11,834.85
£11,834.85
£11,834.85 - £11,834.85
£11,834.85

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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£11,834.85 - £11,834.85
£11,834.85
£11,834.85 - £11,834.85
£11,834.85

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