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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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£14.15
£14.15 - £14.15
£14.15
£13.96
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£13.96

James Gaskets Gasket Carb to Air Cleaner Housing. Bendix – 1971–1975 Big Twin; XL Sportster with…

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James Gaskets Gasket Carb to Air Cleaner Housing. Bendix – 1971–1975 Big Twin; XL Sportster with… .031" fiber reinforced paper. A James designed ga...

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£14.15
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£14.15
£13.96
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£13.96
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£13.38
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£13.20

James Gaskets Carb to Air Cleaner Housing Gasket. Linkert – 1940–1965 Big Twin Models with Linkert…

Only 2 left!

James Gaskets Carb to Air Cleaner Housing Gasket. Linkert – 1940–1965 Big Twin Models with Linkert… .036" paper with steel core. OEM replacement re...

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£15.64
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£15.42

James Gaskets Shovel Manifold Seal Kit. O-ring / Band – 1955–1984 Big Twin; 1957–1985 XL…

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James Gaskets Shovel Manifold Seal Kit. O-ring / Band – 1955–1984 Big Twin; 1957–1985 XL… Used between manifold and cylinder head on Shovelheads an...

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£15.64
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£15.42
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£19.35
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£19.35
£19.08
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£19.08

James Gaskets Gasket Carb to Air Cleaner Housing. SE – 1984–1999 Evo Big Twin; 1986–2003 Evo XL…

Out of stock

James Gaskets Gasket Carb to Air Cleaner Housing. SE – 1984–1999 Evo Big Twin; 1986–2003 Evo XL… .031" fiber reinforced paper. Screamin'' Eagle car...

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£19.35
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£19.35
£19.08
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£11.02
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£10.86
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£10.86

James Gaskets Compliance Intake Manifold Gasket Kit – 1984–1989 Big Twin with Stock Manifold

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James Gaskets Compliance Intake Manifold Gasket Kit – 1984–1989 Big Twin with Stock Manifold Used in combination with the OEM 84-89 compliance styl...

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£11.02
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£11.02
£10.86
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£20.08
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James Gaskets Manifold Gasket & Seal Kit for S&S E/G Carb – 1955–1984 Big Twin with S&S Super E/G…

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James Gaskets Manifold Gasket & Seal Kit for S&S E/G Carb – 1955–1984 Big Twin with S&S Super E/G… Includes both o-ring and band style ...

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£14.78
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James Gaskets Bendix/Keihin Gasket & Seal Kit – 1948–1984 Big Twin; 1957–1985 XL…

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James Gaskets Bendix/Keihin Gasket & Seal Kit – 1948–1984 Big Twin; 1957–1985 XL… Includes manifold to cylinder head o-ring / band style seals;...

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£14.78
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£14.78
£14.58
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£19.45
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£19.18

James Gaskets Seal Plate Derby Cover. RCM – 1999–2005 Dyna; 1999–2006 Softail…

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James Gaskets Seal Plate Derby Cover. RCM – 1999–2005 Dyna; 1999–2006 Softail… RCM (Rubber Coated Metal). Late model seal plate as replacement for ...

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£20.08
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James Gaskets Derby Cover Seal Kit. RCM – 1970–1998 Big Twin

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James Gaskets Derby Cover Seal Kit. RCM – 1970–1998 Big Twin RCM (Rubber Coated Metal). Steel base ribbed rubber for superior sealing characteristi...

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£19.80
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£28.22
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£28.22
£27.83
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£27.83

James Gaskets Cam Gear Change Gasket Kit. XL Sportster – 2004–2022 XL Sportster

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James Gaskets Cam Gear Change Gasket Kit. XL Sportster – 2004–2022 XL Sportster Includes a .031" paper cam cover gasket with silicone bead; pushrod...

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£28.22
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£28.22
£27.83
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£27.83
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£28.22
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£28.22
£27.83
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James Gaskets Cam Gear Change Gasket Kit. XL Sportster – 2000–2003 XL Sportster

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James Gaskets Cam Gear Change Gasket Kit. XL Sportster – 2000–2003 XL Sportster Includes a .031" paper cam cover gasket with silicone bead. Everyth...

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£28.22
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£28.22
£27.83
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£27.83
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£134.03
£137.06
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£137.06

James Gaskets Top End Gasket Kit. Evo B.T. MLS – 1984–1991 Big Twin

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James Gaskets Top End Gasket Kit. Evo B.T. MLS – 1984–1991 Big Twin 0.040" MLS (Multi Layer Steel) head gaskets; RCM (Rubber Coated Metal) cylinder...

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£134.03 - £134.03
£134.03
£137.06
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£137.06
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£25.59
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£25.24
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£25.24

James Gaskets Transmission Mainshaft Seal Kit – 2007–2017 Softail; 2006–2017 Dyna…

Only 4 left!

James Gaskets Transmission Mainshaft Seal Kit – 2007–2017 Softail; 2006–2017 Dyna… Includes all mainshaft oil seals. Complete as shown. Fitment 07-...

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£25.59
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£25.59
£25.24
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£25.24
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£15.93
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£15.93
£15.71
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£15.71

James Gaskets Pushrod Cover Seal Kit – 2004–2022 XL Sportster; 2008–2012…

Only 3 left!

James Gaskets Pushrod Cover Seal Kit – 2004–2022 XL Sportster; 2008–2012… Includes all required upper & lower o-rings to service one engine. OE...

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£15.93
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£15.71
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£11.77
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£11.77
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£11.61

James Gaskets O-ring Primary Drain Plug. Viton – 2004–2006 Softail; FLT/Touring…

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James Gaskets O-ring Primary Drain Plug. Viton – 2004–2006 Softail; FLT/Touring… Viton rubber. OEM replacement reference 11324. Fitment 04-06 Softa...

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£11.77
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£11.77
£11.61
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£11.61
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£36.48
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£36.48
£35.98
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£35.98

James Gaskets Tappet Block & Pushrod Cover Gasket Kit. RCM – 1999–2017 Twin Cam

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James Gaskets Tappet Block & Pushrod Cover Gasket Kit. RCM – 1999–2017 Twin Cam Includes Allen head (socket head) mounting screws and washers; ...

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£36.48
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£36.48
£35.98
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£35.98
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£49.35 - £49.35
£49.35
£49.73
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£49.73

James Gaskets James Gasket Repair Kit. Primary to Crankcase. Foamet – 1970–1984 Shovelhead

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James Gaskets James Gasket Repair Kit. Primary to Crankcase. Foamet – 1970–1984 Shovelhead Case saver gasket kit. Used between the inner primary an...

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£49.35 - £49.35
£49.35
£49.73
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£49.36
£49.74
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£49.74

James Gaskets James Gasket Repair Kit. Primary to Crankcase. RCM – 1970–1984 Shovelhead

Only 2 left!

James Gaskets James Gasket Repair Kit. Primary to Crankcase. RCM – 1970–1984 Shovelhead Case saver gasket kit. Used between the inner primary and c...

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£49.36 - £49.36
£49.36
£49.74
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£49.74
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£49.36
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James Gaskets James Gasket Repair Kit. Primary to Crankcase. Foamet – 1984–1999 Evo Big Twin; 1999–2006 Twin…

Only 2 left!

James Gaskets James Gasket Repair Kit. Primary to Crankcase. Foamet – 1984–1999 Evo Big Twin; 1999–2006 Twin… Case saver gasket kit. Used between t...

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£49.36 - £49.36
£49.36
£49.74
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£49.74
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£20.52
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£20.52
£20.24
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£20.24

James Gaskets Oil Pump Gasket & Seal Kit for S&S HVHP Pump – 1992–1999 Big Twin Evo Big Twin with S&S…

Only 3 left!

James Gaskets Oil Pump Gasket & Seal Kit for S&S HVHP Pump – 1992–1999 Big Twin Evo Big Twin with S&S… With RCM (Rubber Coated Metal wi...

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£20.52
£20.52 - £20.52
£20.52
£20.24
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£20.24
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£72.69 - £72.69
£72.69
£73.25
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£73.25

James Gaskets Primary Gasket Kit. Outer Cover – 2005–2006 FLT/Touring

Only 3 left!

James Gaskets Primary Gasket Kit. Outer Cover – 2005–2006 FLT/Touring Includes .062" silicone beaded paper primary; derby & inspection cover ga...

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£72.69 - £72.69
£72.69
£73.25
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£73.25
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£263.26
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£263.26
£250.65
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£250.65

Kibblewhite KPMI, Valve Spring Kit. .630" Lift. Steel Top Collars – 2005–2017 Twin Cam; 2004–2021 XL…

Only 2 left!

Kibblewhite KPMI, Valve Spring Kit. .630" Lift. Steel Top Collars – 2005–2017 Twin Cam; 2004–2021 XL… Steel upper valve spring collars. Installed s...

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£263.26
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£263.26
£250.65
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£250.65
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£156.43
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£156.43
£148.93
£148.93 - £148.93
£148.93

Kibblewhite KPMI, Valve Spring Kit. .600" Lift. Steel Top Collars – 2005–2017 Twin Cam; 2004–2021 XL…

Only 2 left!

Kibblewhite KPMI, Valve Spring Kit. .600" Lift. Steel Top Collars – 2005–2017 Twin Cam; 2004–2021 XL… Steel upper valve spring collars. Installed s...

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£156.43
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£156.43
£148.93
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£148.93
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£169.90
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£169.90
£161.76
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£161.76

Kibblewhite KPMI, Beehive Valve Spring Kit. Steel. .660" Lift – 2005–2017 Twin Cam; 2004–2021 XL…

Only 2 left!

Kibblewhite KPMI, Beehive Valve Spring Kit. Steel. .660" Lift – 2005–2017 Twin Cam; 2004–2021 XL… With steel top & lower collars. Reduces total...

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£169.90
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£169.90
£161.76
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£161.76
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