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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 Head Installation Gasket Set Cylinder Base Cylinder Head
£59.13 - £59.13
£59.13
£59.13 - £59.13
£59.13

S&S Cycle Head Installation Gasket Set Cylinder Base Cylinder Head #90-1906

in stock

DescriptionHead Installation Gasket SetContains head gaskets, base gaskets and exhaust pipe gaskets (rocker box gaskets are not included due to the...

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£59.13 - £59.13
£59.13
£59.13 - £59.13
£59.13
S&S Cycle Head Installation Gasket Set Cylinder Base Cylinder Head
£65.42 - £65.42
£65.42
£65.42 - £65.42
£65.42

S&S Cycle Head Installation Gasket Set Cylinder Base Cylinder Head #90-1905

in stock

DescriptionHead Installation Gasket SetContains head gaskets, base gaskets and exhaust pipe gaskets (rocker box gaskets are not included due to the...

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£65.42 - £65.42
£65.42
£65.42 - £65.42
£65.42
S&S Cycle Oil Pump Drive Gear
£39.43 - £39.43
£39.43
£39.43 - £39.43
£39.43

S&S Cycle Oil Pump Drive Gear #31-6015

Only 2 left!

DescriptionOil Pump Drive GearOil pump drive gear for Big Twin modelsSpecifications Riding Style: Street Units: Each Product Name: Gear Type: D...

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£39.43 - £39.43
£39.43
£39.43 - £39.43
£39.43
S&S Cycle Oil Pump Idler Gear
£31.72 - £31.72
£31.72
£31.72 - £31.72
£31.72

S&S Cycle Oil Pump Idler Gear #31-6014

Only 4 left!

DescriptionOil Pump Idler GearOil pump idler gear for Big Twin ModelsSpecifications Riding Style: Street Type: Idler| Oil Pump| Return Units: Ea...

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£31.72 - £31.72
£31.72
£31.72 - £31.72
£31.72
S&S Cycle Oil Pump Drive Gear
£32.69 - £32.69
£32.69
£32.69 - £32.69
£32.69

S&S Cycle Oil Pump Drive Gear #31-6013

in stock

DescriptionOil Pump Drive GearOil pump drive gear for Big Twin modelsSpecifications Type: Drive| Oil Pump| Return Product Name: Gear Units: Each...

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£32.69 - £32.69
£32.69
£32.69 - £32.69
£32.69
S&S Cycle Oil Pump Idler Gear
Sold out
£39.43 - £39.43
£39.43
£39.43 - £39.43
£39.43

S&S Cycle Oil Pump Idler Gear #31-6016

Out of stock

DescriptionOil Pump Idler GearOil pump idler gear for Big Twin ModelsSpecifications Product Name: Gear Riding Style: Street Type: Idler| Oil Pum...

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£39.43 - £39.43
£39.43
£39.43 - £39.43
£39.43
Sold out
S&S Cycle Breather Gear Spacing Shim Kit
£42.20 - £42.20
£42.20
£42.20 - £42.20
£42.20

S&S Cycle Breather Gear Spacing Shim Kit #33-4249

in stock

DescriptionBreather Gear Spacing Shim KitShim kit includes one of each thickness: 0.100", 0.110", 0.120", 0.130", 0.140", 0.150", 0.160" and 0.170"...

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£42.20 - £42.20
£42.20
£42.20 - £42.20
£42.20
S&S Cycle Steel Rotary Breather Gear
Sold out
£130.75 - £130.75
£130.75
£130.75 - £130.75
£130.75

S&S Cycle Steel Rotary Breather Gear #33-4247

Out of stock

DescriptionSteel Rotary Breather GearAll steel construction - superior dimensional stability, abrasionWelded-in screenHigher flow than stockElongat...

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£130.75 - £130.75
£130.75
£130.75 - £130.75
£130.75
Sold out
S&S Cycle Steel Rotary Breather Gear
£168.95 - £168.95
£168.95
£168.95 - £168.95
£168.95

S&S Cycle Steel Rotary Breather Gear #33-4242

in stock

DescriptionSteel Rotary Breather GearAll-steel constructionWelded-in screenHigher flow than stockElongated breather pocket scavenge hole for increa...

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£168.95 - £168.95
£168.95
£168.95 - £168.95
£168.95
S&S Cycle Steel Rotary Breather Gear
£106.43 - £106.43
£106.43
£106.43 - £106.43
£106.43

S&S Cycle Steel Rotary Breather Gear #33-4241

in stock

DescriptionSteel Rotary Breather GearAll-steel constructionWelded-in screenHigher flow than stockElongated breather pocket scavenge hole for increa...

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£106.43 - £106.43
£106.43
£106.43 - £106.43
£106.43
S&S Cycle Bolt-In Sidewinder® 4" Big Bore Kits Cylinder and Piston Kit Black
£1,403.99 - £1,403.99
£1,403.99
£1,403.99 - £1,403.99
£1,403.99

S&S Cycle Bolt-In Sidewinder® 4" Big Bore Kits Cylinder and Piston Kit Black #910-0646

in stock

DescriptionBolt-In Sidewinder® 4" Big Bore KitsBolt in - no machining, balancing or splitting the crankcases; install can be performed with engine ...

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£1,403.99 - £1,403.99
£1,403.99
£1,403.99 - £1,403.99
£1,403.99
S&S Cycle Bolt-In Sidewinder® 4" Big Bore Kits Cylinder and Piston Kit Silver
£1,603.30 - £1,603.30
£1,603.30
£1,603.30 - £1,603.30
£1,603.30

S&S Cycle Bolt-In Sidewinder® 4" Big Bore Kits Cylinder and Piston Kit Silver #910-0642

in stock

DescriptionBolt-In Sidewinder® 4" Big Bore KitsBolt in - no machining, balancing or splitting the crankcases; install can be performed with engine ...

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£1,603.30 - £1,603.30
£1,603.30
£1,603.30 - £1,603.30
£1,603.30
S&S Cycle Cylinder & Piston Kit Cylinder and Piston Kit Wrinkle Black
£1,082.62 - £1,082.62
£1,082.62
£1,082.62 - £1,082.62
£1,082.62

S&S Cycle Cylinder & Piston Kit Cylinder and Piston Kit Wrinkle Black #910-0182

in stock

DescriptionCylinder & Piston KitCylinder and piston kits contain S&S 3-1/2" bore (80") cylinders and forged pistons, rings, wrist pins, and...

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£1,082.62 - £1,082.62
£1,082.62
£1,082.62 - £1,082.62
£1,082.62
S&S Cycle Cylinder & Piston Kit Cylinder and Piston Kit Natural Aluminium
£1,015.63 - £1,015.63
£1,015.63
£1,015.63 - £1,015.63
£1,015.63

S&S Cycle Cylinder & Piston Kit Cylinder and Piston Kit Natural Aluminium #910-0179

in stock

DescriptionCylinder & Piston KitCylinder and piston kits contain S&S 3-1/2" bore (80") cylinders and forged pistons, rings, wrist pins, and...

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£1,015.63 - £1,015.63
£1,015.63
£1,015.63 - £1,015.63
£1,015.63
S&S Cycle 4-1/8" Bore Cylinder Cylinder Kit Black Powder-Coated Aluminium Pair
£962.38 - £962.38
£962.38
£962.38 - £962.38
£962.38

S&S Cycle 4-1/8" Bore Cylinder Cylinder Kit Black Powder-Coated Aluminium Pair #910-0401

Only 4 left!

Description4-1/8" Bore CylinderCylinders have a stock bolt patternBored slightly under nominal size and are not honedDesigned for 124" Hot Set Up K...

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£962.38 - £962.38
£962.38
£962.38 - £962.38
£962.38
S&S Cycle Big Bore Cylinder Kit Silver Aluminium
£1,269.31 - £1,269.31
£1,269.31
£1,269.31 - £1,269.31
£1,269.31

S&S Cycle Big Bore Cylinder Kit Silver Aluminium #910-0201

Only 3 left!

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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£1,269.31 - £1,269.31
£1,269.31
£1,269.31 - £1,269.31
£1,269.31
S&S Cycle Big Bore Cylinder Kit Black Aluminium
£1,131.50 - £1,131.50
£1,131.50
£1,131.50 - £1,131.50
£1,131.50

S&S Cycle Big Bore Cylinder Kit Black Aluminium #910-0205

Only 4 left!

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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£1,131.50 - £1,131.50
£1,131.50
£1,131.50 - £1,131.50
£1,131.50
S&S Cycle Big Bore Cylinder Kit Silver Aluminium
£1,269.31 - £1,269.31
£1,269.31
£1,269.31 - £1,269.31
£1,269.31

S&S Cycle Big Bore Cylinder Kit Silver Aluminium #910-0202

Only 3 left!

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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£1,269.31 - £1,269.31
£1,269.31
£1,269.31 - £1,269.31
£1,269.31
S&S Cycle Big Bore Cylinder Kit Black Aluminium
£1,131.50 - £1,131.50
£1,131.50
£1,131.50 - £1,131.50
£1,131.50

S&S Cycle Big Bore Cylinder Kit Black Aluminium #910-0206

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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£1,131.50 - £1,131.50
£1,131.50
£1,131.50 - £1,131.50
£1,131.50
S&S Cycle Big Bore Cylinder Kit Silver Aluminium
£1,340.06 - £1,340.06
£1,340.06
£1,340.06 - £1,340.06
£1,340.06

S&S Cycle Big Bore Cylinder Kit Silver Aluminium #910-0200

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
£1,340.06 - £1,340.06
£1,340.06
£1,340.06 - £1,340.06
£1,340.06
S&S Cycle Big Bore Cylinder Kit Black Aluminium
£1,131.50 - £1,131.50
£1,131.50
£1,131.50 - £1,131.50
£1,131.50

S&S Cycle Big Bore Cylinder Kit Black Aluminium #910-0204

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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£1,131.50 - £1,131.50
£1,131.50
£1,131.50 - £1,131.50
£1,131.50
S&S Cycle Replacement Silicone Solenoid Caps White Compression Release
£6.37 - £6.37
£6.37
£6.37 - £6.37
£6.37

S&S Cycle Replacement Silicone Solenoid Caps White Compression Release #55-1009

in stock

DescriptionReplacement Silicone Solenoid CapsReplacement silicone solenoid caps for S&S electronic and manual compression release kitsMade in t...

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£6.37 - £6.37
£6.37
£6.37 - £6.37
£6.37
S&S Cycle Retro Top-End Conversion Kit Cylinder Aluminium
£4,682.02 - £4,682.02
£4,682.02
£4,682.02 - £4,682.02
£4,682.02

S&S Cycle Retro Top-End Conversion Kit Cylinder Aluminium #106-1071

Only 4 left!

DescriptionRetro Top-End Conversion KitGive your Shovelhead engine that nostalgic look of a PanheadKit consists of a set of S&S P-series cylind...

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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 Retro Top-End Conversion Kit Cylinder Aluminium
Sold out
£4,157.64 - £4,157.64
£4,157.64
£4,157.64 - £4,157.64
£4,157.64

S&S Cycle Retro Top-End Conversion Kit Cylinder Aluminium #106-1070

Out of stock

DescriptionRetro Top-End Conversion KitGive your Shovelhead engine that nostalgic look of a PanheadKit consists of a set of S&S P-series cylind...

View full details
£4,157.64 - £4,157.64
£4,157.64
£4,157.64 - £4,157.64
£4,157.64
Sold out

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