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Engine & Performance

Choose from Engine & Performance products for Harley-Davidson, American V-twin and compatible motorcycle applications. Across the range you will find products for engine components. Compatibility varies, so match the stated model, year and technical details before ordering.

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S&S Cycle Big Bore Cylinder Kit Black Aluminium
£1,710.46 - £1,710.46
£1,710.46
£1,710.46 - £1,710.46
£1,710.46

S&S Cycle Big Bore Cylinder Kit Black Aluminium #910-0338

in stock

DescriptionBig Bore Cylinder KitBig Bore kit yields excellent results with stock cylinder headsEasy installation no need to bore or split existing ...

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£1,710.46 - £1,710.46
£1,710.46
£1,710.46 - £1,710.46
£1,710.46
S&S Cycle Big Bore Cylinder Kit Grey Aluminium
£1,710.46 - £1,710.46
£1,710.46
£1,710.46 - £1,710.46
£1,710.46

S&S Cycle Big Bore Cylinder Kit Grey Aluminium #910-0469

Only 3 left!

DescriptionBig Bore Cylinder KitBig Bore kit yields excellent results with stock cylinder headsEasy installation no need to bore or split existing ...

View full details
£1,710.46 - £1,710.46
£1,710.46
£1,710.46 - £1,710.46
£1,710.46
S&S Cycle Big Bore Cylinder Kit Black Aluminium
£1,444.73 - £1,444.73
£1,444.73
£1,444.73 - £1,444.73
£1,444.73

S&S Cycle Big Bore Cylinder Kit Black Aluminium #910-0221

Only 4 left!

DescriptionBig Bore Cylinder KitBig Bore kit yields excellent results with stock cylinder headsEasy installation no need to bore or split existing ...

View full details
£1,444.73 - £1,444.73
£1,444.73
£1,444.73 - £1,444.73
£1,444.73
S&S Cycle Big Bore Cylinder Kit Grey Aluminium Sold out
£1,710.46 - £1,710.46
£1,710.46
£1,710.46 - £1,710.46
£1,710.46

S&S Cycle Big Bore Cylinder Kit Grey Aluminium #910-0474

Out of stock

DescriptionBig Bore Cylinder KitBig Bore kit yields excellent results with stock cylinder headsEasy installation no need to bore or split existing ...

View full details
£1,710.46 - £1,710.46
£1,710.46
£1,710.46 - £1,710.46
£1,710.46
Sold out
S&S Cycle Big Bore Cylinder Kit Black Aluminium
£1,443.07 - £1,443.07
£1,443.07
£1,443.07 - £1,443.07
£1,443.07

S&S Cycle Big Bore Cylinder Kit Black Aluminium #910-0481

in stock

DescriptionBig Bore Cylinder KitBig Bore kit yields excellent results with stock cylinder headsEasy installation no need to bore or split existing ...

View full details
£1,443.07 - £1,443.07
£1,443.07
£1,443.07 - £1,443.07
£1,443.07
S&S Cycle Big Bore Cylinder Kit Silver Aluminium
£1,400.41 - £1,400.41
£1,400.41
£1,400.41 - £1,400.41
£1,400.41

S&S Cycle Big Bore Cylinder Kit Silver Aluminium #910-0480

in stock

DescriptionBig Bore Cylinder KitBig Bore kit yields excellent results with stock cylinder headsEasy installation no need to bore or split existing ...

View full details
£1,400.41 - £1,400.41
£1,400.41
£1,400.41 - £1,400.41
£1,400.41
S&S Cycle Replacement Cylinder & Piston for S&S 106" Stroker Kit Cylinder and Piston Kit Powder-Coated Wrinkle Black
£1,334.86 - £1,334.86
£1,334.86
£1,334.86 - £1,334.86
£1,334.86

S&S Cycle Replacement Cylinder & Piston for S&S 106" Stroker Kit Cylinder and Piston Kit Powder-Coated Wrinkle Black #910-0203

in stock

DescriptionReplacement Cylinder & Piston for S&S 106" Stroker KitOnly for 88" motorsCan be used to repair an existing 106" stroker engineKi...

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£1,334.86 - £1,334.86
£1,334.86
£1,334.86 - £1,334.86
£1,334.86
S&S Cycle 79 cc Super Stock® Cylinder Head Cylinder Head Kit Black Powder-Coated Aluminium Pair
£1,868.61 - £1,868.61
£1,868.61
£1,868.61 - £1,868.61
£1,868.61

S&S Cycle 79 cc Super Stock® Cylinder Head Cylinder Head Kit Black Powder-Coated Aluminium Pair #900-0251

in stock

Description79 cc Super Stock® Cylinder HeadHeads are fully assembled with springs and valvesWorks great with 88" to 103" stock motors, but are idea...

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£1,868.61 - £1,868.61
£1,868.61
£1,868.61 - £1,868.61
£1,868.61
S&S Cycle Valve Spring Shim Black Steel
£5.15 - £5.15
£5.15
£5.15 - £5.15
£5.15

S&S Cycle Valve Spring Shim Black Steel #90-2087

in stock

DescriptionValve Spring Shim.574" x 1.450" x .030"Black, steel constructionMade in the USASpecifications Colour/Finish: Black Material: Steel Pr...

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£5.15 - £5.15
£5.15
£5.15 - £5.15
£5.15
S&S Cycle Exhaust Port Stud Natural Steel
£6.79 - £6.79
£6.79
£6.79 - £6.79
£6.79

S&S Cycle Exhaust Port Stud Natural Steel #50-0493

in stock

DescriptionExhaust Port StudFour required per engine, sold eachZinc-plated5/16"-18, 5/16"-24 1.910"Made in the U.S.A.Specifications Colour/Finish:...

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£6.79 - £6.79
£6.79
£6.79 - £6.79
£6.79
S&S Cycle Replacement Electric Compression Release Assembly Silver Kit
£200.91 - £200.91
£200.91
£200.91 - £200.91
£200.91

S&S Cycle Replacement Electric Compression Release Assembly Silver Kit #90-4914

in stock

DescriptionReplacement Electric Compression Release AssemblyElectric compression releases open when you press the start button and close when the b...

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£200.91 - £200.91
£200.91
£200.91 - £200.91
£200.91
S&S Cycle Super Stock® Cylinder Head Kit Aluminium Rubber Band Intake Stock Compression
£1,972.66 - £1,972.66
£1,972.66
£1,972.66 - £1,972.66
£1,972.66

S&S Cycle Super Stock® Cylinder Head Kit Aluminium Rubber Band Intake Stock Compression #90-1499

in stock

DescriptionSuper Stock® Cylinder Head KitHeads come completely assembled with valve seats, valves, guides, seals, .590" lift valve springs, collars...

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£1,972.66 - £1,972.66
£1,972.66
£1,972.66 - £1,972.66
£1,972.66
S&S Cycle 89 cc Super Stock® Cylinder Heads Cylinder Head Kit Powder-Coated Wrinkle Black Aluminium Pair
£1,806.81 - £1,806.81
£1,806.81
£1,806.81 - £1,806.81
£1,806.81

S&S Cycle 89 cc Super Stock® Cylinder Heads Cylinder Head Kit Powder-Coated Wrinkle Black Aluminium Pair #106-3240

in stock

Description89 cc Super Stock® Cylinder HeadsHeads are fully assembled with springs and valves Designed for '06-'16 engines with stock crankcaseGood...

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£1,806.81 - £1,806.81
£1,806.81
£1,806.81 - £1,806.81
£1,806.81
S&S Cycle 89 cc Super Stock® Cylinder Heads Cylinder Head Kit Powder-Coated Silver Aluminium Pair
£2,076.70 - £2,076.70
£2,076.70
£2,076.70 - £2,076.70
£2,076.70

S&S Cycle 89 cc Super Stock® Cylinder Heads Cylinder Head Kit Powder-Coated Silver Aluminium Pair #106-3255

in stock

Description89 cc Super Stock® Cylinder HeadsHeads are fully assembled with springs and valves Designed for '06-'16 engines with stock crankcaseGood...

View full details
£2,076.70 - £2,076.70
£2,076.70
£2,076.70 - £2,076.70
£2,076.70
S&S Cycle 79 cc Super Stock® Cylinder Heads Cylinder Head Kit Powder-Coated Wrinkle Black Aluminium Pair
£2,076.70 - £2,076.70
£2,076.70
£2,076.70 - £2,076.70
£2,076.70

S&S Cycle 79 cc Super Stock® Cylinder Heads Cylinder Head Kit Powder-Coated Wrinkle Black Aluminium Pair #106-3233

in stock

Description79 cc Super Stock® Cylinder HeadsHeads are fully assembled with springs and valvesDesigned for stock 88" to 103" engines or slightly mod...

View full details
£2,076.70 - £2,076.70
£2,076.70
£2,076.70 - £2,076.70
£2,076.70
S&S Cycle 79 cc Super Stock® Cylinder Heads Cylinder Head Kit Powder-Coated Silver Aluminium Pair
£2,076.70 - £2,076.70
£2,076.70
£2,076.70 - £2,076.70
£2,076.70

S&S Cycle 79 cc Super Stock® Cylinder Heads Cylinder Head Kit Powder-Coated Silver Aluminium Pair #106-3227

Only 4 left!

Description79 cc Super Stock® Cylinder HeadsHeads are fully assembled with springs and valvesDesigned for stock 88" to 103" engines or slightly mod...

View full details
£2,076.70 - £2,076.70
£2,076.70
£2,076.70 - £2,076.70
£2,076.70
S&S Cycle 79 cc Super Stock® Cylinder Head Cylinder Head Kit Powder-Coated Silver Aluminium Pair
£2,236.93 - £2,236.93
£2,236.93
£2,236.93 - £2,236.93
£2,236.93

S&S Cycle 79 cc Super Stock® Cylinder Head Cylinder Head Kit Powder-Coated Silver Aluminium Pair #106-4277

Only 5 left!

Description79 cc Super Stock® Cylinder HeadHeads are fully assembled with springs and valvesWorks great with 88" to 103" stock motors, but are idea...

View full details
£2,236.93 - £2,236.93
£2,236.93
£2,236.93 - £2,236.93
£2,236.93
S&S Cycle 79 cc Super Stock® Cylinder Head Cylinder Head Kit Powder-Coated Wrinkle Black Aluminium Pair
£1,889.42 - £1,889.42
£1,889.42
£1,889.42 - £1,889.42
£1,889.42

S&S Cycle 79 cc Super Stock® Cylinder Head Cylinder Head Kit Powder-Coated Wrinkle Black Aluminium Pair #90-1293

in stock

Description79 cc Super Stock® Cylinder HeadHeads are fully assembled with springs and valvesWorks great with 88" to 103" stock motors, but are idea...

View full details
£1,889.42 - £1,889.42
£1,889.42
£1,889.42 - £1,889.42
£1,889.42
S&S Cycle Super Stock® Cylinder Head Kit Aluminium O-Ring Intake Stock Compression
£1,719.92 - £1,719.92
£1,719.92
£1,719.92 - £1,719.92
£1,719.92

S&S Cycle Super Stock® Cylinder Head Kit Aluminium O-Ring Intake Stock Compression #90-1497

in stock

DescriptionSuper Stock® Cylinder Head KitHeads come completely assembled with valve seats, valves, guides, seals, .590" lift valve springs, collars...

View full details
£1,719.92 - £1,719.92
£1,719.92
£1,719.92 - £1,719.92
£1,719.92
S&S Cycle Super Stock® Cylinder Head Kit Aluminium O-Ring Intake Stock Compression
£1,560.58 - £1,560.58
£1,560.58
£1,560.58 - £1,560.58
£1,560.58

S&S Cycle Super Stock® Cylinder Head Kit Aluminium O-Ring Intake Stock Compression #90-1496

in stock

DescriptionSuper Stock® Cylinder Head KitHeads come completely assembled with valve seats, valves, guides, seals, .590" lift valve springs, collars...

View full details
£1,560.58 - £1,560.58
£1,560.58
£1,560.58 - £1,560.58
£1,560.58
S&S Cycle Super Stock® Cylinder Head Kit Aluminium O-Ring Intake High Compression
Sold out
£1,972.66 - £1,972.66
£1,972.66
£1,972.66 - £1,972.66
£1,972.66

S&S Cycle Super Stock® Cylinder Head Kit Aluminium O-Ring Intake High Compression #90-1491

Out of stock

DescriptionSuper Stock® Cylinder Head KitHeads come completely assembled with valve seats, valves, guides, seals, .590" lift valve springs, collars...

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£1,972.66 - £1,972.66
£1,972.66
£1,972.66 - £1,972.66
£1,972.66
Sold out
S&S Cycle Super Stock® Cylinder Head Kit Aluminium Rubber Band Intake Stock Compression
£1,793.70 - £1,793.70
£1,793.70
£1,793.70 - £1,793.70
£1,793.70

S&S Cycle Super Stock® Cylinder Head Kit Aluminium Rubber Band Intake Stock Compression #90-1498

in stock

DescriptionSuper Stock® Cylinder Head KitHeads come completely assembled with valve seats, valves, guides, seals, .590" lift valve springs, collars...

View full details
£1,793.70 - £1,793.70
£1,793.70
£1,793.70 - £1,793.70
£1,793.70
S&S Cycle Super Stock™ Cylinder Head Kit Black Powder-Coated Aluminium Pair
£1,629.39 - £1,629.39
£1,629.39
£1,629.39 - £1,629.39
£1,629.39

S&S Cycle Super Stock™ Cylinder Head Kit Black Powder-Coated Aluminium Pair #90-1504

in stock

DescriptionSuper Stock™ Cylinder Head KitS&S heads give great performance, and work with additional upgradesCompatible with stock 3-1/2" or 3-5...

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£1,629.39 - £1,629.39
£1,629.39
£1,629.39 - £1,629.39
£1,629.39
S&S Cycle 89 cc Super Stock® Cylinder Heads Cylinder Head Kit Powder-Coated Wrinkle Black Aluminium Pair
£1,625.77 - £1,625.77
£1,625.77
£1,625.77 - £1,625.77
£1,625.77

S&S Cycle 89 cc Super Stock® Cylinder Heads Cylinder Head Kit Powder-Coated Wrinkle Black Aluminium Pair #90-1106

in stock

Description89 cc Super Stock® Cylinder HeadsHeads are fully assembled with springs and valvesDesigned for '99-'05 engines with stock crankcaseGood ...

View full details
£1,625.77 - £1,625.77
£1,625.77
£1,625.77 - £1,625.77
£1,625.77

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