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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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£186.39 - £186.39
£186.39
£190.61
£190.61 - £190.61
£190.61

James Gaskets Motor Gasket & Seal Kit. MLS XL Sportster – 1988–1990 4-Speed XL1200

Only 3 left!

James Gaskets Motor Gasket & Seal Kit. MLS XL Sportster – 1988–1990 4-Speed XL1200 0.040" MLS head gaskets; RCM (Rubber Coated Metal) cylinder ...

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£186.39 - £186.39
£186.39
£190.61
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£118.94
£121.62
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£121.62

James Gaskets Motor Gasket & Seal Kit. XR1000 – 1983–1984 XR1000

Only 2 left!

James Gaskets Motor Gasket & Seal Kit. XR1000 – 1983–1984 XR1000 Kit includes all gaskets; seals and O-rings required for the engine and primar...

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£118.94 - £118.94
£118.94
£121.62
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£23.77
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£23.44
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James Gaskets Transmission Mainshaft Seal Kit – 2006–2022 XL Sportster; 2008–2012 XR1200

Out of stock

James Gaskets Transmission Mainshaft Seal Kit – 2006–2022 XL Sportster; 2008–2012 XR1200 Includes all mainshaft oil seals. Complete as shown. Fitme...

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£23.77
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£23.44
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£30.06
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£29.64
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James Gaskets Fuel Pump Filter O-ring – 2001–2007 Softail; 2002–2007 FLT/Touring

Only 3 left!

James Gaskets Fuel Pump Filter O-ring – 2001–2007 Softail; 2002–2007 FLT/Touring Viton rubber. Used between fuel filter and regulator housing of th...

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£30.06
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£29.64
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£10.96
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£10.79
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James Gaskets O-ring Drain, Dipstick & Oil Pump Plugs. Oversize – Crankcase; Drain Plug (1 Used):…

Only 3 left!

James Gaskets O-ring Drain, Dipstick & Oil Pump Plugs. Oversize – Crankcase; Drain Plug (1 Used):… Multi-application. Oversized version of MCS ...

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£10.96
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£10.79
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£48.77 - £48.77
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£49.15
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James Gaskets Fuel Gauge Tank Mount O-ring – 1988–1992 FXRS; 1991–1992 All Dyna…

Only 3 left!

James Gaskets Fuel Gauge Tank Mount O-ring – 1988–1992 FXRS; 1991–1992 All Dyna… OEM style replacement for FXR; Dyna and FLHR models. OEM replaceme...

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£48.77 - £48.77
£48.77
£49.15
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£49.15
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£23.09
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£23.09
£22.76
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James Gaskets Gasket Inspection Cover. .062" Paper/Silicone – 1965–2006 Big Twin

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James Gaskets Gasket Inspection Cover. .062" Paper/Silicone – 1965–2006 Big Twin .062" fiber reinforced paper with a silicone bead on one side. OEM...

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£23.09
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£22.76
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£19.73
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£19.45
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£19.45

James Gaskets Gasket Inspection Cover. .062" Paper – 1965–2006 Big Twin

Only 2 left!

James Gaskets Gasket Inspection Cover. .062" Paper – 1965–2006 Big Twin .062" fiber reinforced paper. OEM replacement reference 60567-65; 60567-65A...

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£19.73
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£19.45
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£41.13 - £41.13
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James Gaskets Primary Cover Gasket & Seal Kit. Inner/Outer – 1936–1964 OHV Big Twin & Flathead Big…

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James Gaskets Primary Cover Gasket & Seal Kit. Inner/Outer – 1936–1964 OHV Big Twin & Flathead Big… With premium cork/rubber blend primary;...

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£41.44
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£14.42
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£14.22
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James Gaskets Carb to Air Cleaner Housing Gasket. Keihin CV – 1990–1999 Evo Big Twin; 1988–2004 XL…

Only 3 left!

James Gaskets Carb to Air Cleaner Housing Gasket. Keihin CV – 1990–1999 Evo Big Twin; 1988–2004 XL… .031" fiber reinforced paper with adhesive back...

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£14.42
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£17.56
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£17.31
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£17.31

James Gaskets Manifold Intake Gasket & Seal Kit. 44mm CV Carb – 1989–2005 Big Twin; 1986–2006 XL…

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James Gaskets Manifold Intake Gasket & Seal Kit. 44mm CV Carb – 1989–2005 Big Twin; 1986–2006 XL… Used in combination with the Screamin'' Eagle...

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£17.56
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£17.56
£17.31
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£17.31
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£25.70
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£25.35
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£25.35

James Gaskets Rocker Cover Gasket. .031" Paper – 1966–1984 Shovelhead

Only 2 left!

James Gaskets Rocker Cover Gasket. .031" Paper – 1966–1984 Shovelhead .031" fiber reinforced paper. Replacement reference OEM 17540-69; 17540-69A. ...

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£25.35
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£25.35
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£42.21 - £42.21
£42.21
£42.53
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£42.53

James Gaskets Gasket Set, Cylinder Base 3-5/8" Bore. .031" Foamet – 1963–1984 Big Twin with 3-5/8" Big Bore…

Only 2 left!

James Gaskets Gasket Set, Cylinder Base 3-5/8" Bore. .031" Foamet – 1963–1984 Big Twin with 3-5/8" Big Bore… 3-5/8" big bore. .031" thick Foamet (F...

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£42.21 - £42.21
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£42.53
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James Gaskets Cylinder Base Gasket Set. .022" RCM – 1963–1984 Big Twin

Only 3 left!

James Gaskets Cylinder Base Gasket Set. .022" RCM – 1963–1984 Big Twin .022" RCM (Rubber Coated Metal). Final crush .020". OEM replacement referenc...

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£42.21
£42.53
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£64.29
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James Gaskets Cylinder Head Gasket Set 4" Bore. .046" Firering – 1984–2017 Evo & Twin Cam Style Engines…

Only 2 left!

James Gaskets Cylinder Head Gasket Set 4" Bore. .046" Firering – 1984–2017 Evo & Twin Cam Style Engines… Firering® head gaskets with dual silic...

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£63.80 - £63.80
£63.80
£64.29
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£81.41
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£81.41

James Gaskets Cylinder Head Gaskets. 3-5/8" Big Bore – 1984–1999 Big Twin; 1986–2022 Evo XL…

Only 2 left!

James Gaskets Cylinder Head Gaskets. 3-5/8" Big Bore – 1984–1999 Big Twin; 1986–2022 Evo XL… .045" thick; final crush .042". Silicone bead with fir...

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£80.79 - £80.79
£80.79
£81.41
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£81.41
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£34.16
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£34.16
£33.68
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£33.68

James Gaskets Cylinder Head 3.5" Bore .036" – 1984–1999 Evo Big Twin; 1988–2022 XL…

Only 3 left!

James Gaskets Cylinder Head 3.5" Bore .036" – 1984–1999 Evo Big Twin; 1988–2022 XL… .036" graphite gaskets; with fire-ring. Incl. O-rings. Starting...

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£34.16
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£34.16
£33.68
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£33.68
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£51.92
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James Gaskets Gasket Cylinder Head .045" Graphite – 1966–1984 Shovelhead

Only 2 left!

James Gaskets Gasket Cylinder Head .045" Graphite – 1966–1984 Shovelhead .045" thick reinforced graphite with Firering. Final crush .042". Fits bot...

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£51.53
£51.92
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£88.02 - £88.02
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£88.70
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£88.70

James Gaskets Rocker Cover Gasket Kit. Evo XL. RCM – 1986–1990 XL883/1100/1200

Only 3 left!

James Gaskets Rocker Cover Gasket Kit. Evo XL. RCM – 1986–1990 XL883/1100/1200 Includes RCM (Rubber Coated Metal with silicone bead) rocker box bas...

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£88.02 - £88.02
£88.02
£88.70
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£88.70
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£26.33
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£26.33
£25.97
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£25.97

James Gaskets Exhaust Gasket & Mount Kit. Copper Gaskets – 1984–2026 Big Twin; 1986–2022 XL…

Only 3 left!

James Gaskets Exhaust Gasket & Mount Kit. Copper Gaskets – 1984–2026 Big Twin; 1986–2022 XL… Incl. round copper crush ring style gaskets; 2 ret...

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£26.33
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£26.33
£25.97
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£25.97
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£17.56
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£17.56
£17.31
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£17.31

James Gaskets Induction Module Gasket & Seal Kit – 1999–2010 XB9R; XB9S & All Buell Fuel…

Out of stock

James Gaskets Induction Module Gasket & Seal Kit – 1999–2010 XB9R; XB9S & All Buell Fuel… Includes 27002-89 manifold to head seals and 2553...

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£17.56
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£17.31
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£131.38 - £131.38
£131.38
£134.35
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£134.35

James Gaskets Motor Gasket Kit. 3-3/4" Bore Fire-ring – 1999–2004 88" Twin Cam

Only 3 left!

James Gaskets Motor Gasket Kit. 3-3/4" Bore Fire-ring – 1999–2004 88" Twin Cam Includes 0.036" thick 3-3/4" bore head gaskets with Fire-ring®. Incl...

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£131.38 - £131.38
£131.38
£134.35
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£134.34
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£134.34

James Gaskets Motor Gasket Kit. 3-3/4" Bore Twin Cam – 2005–2017 88"/96" Twin Cam

Only 2 left!

James Gaskets Motor Gasket Kit. 3-3/4" Bore Twin Cam – 2005–2017 88"/96" Twin Cam .036" thick 3-3/4" bore fire-ring head gaskets with silicone bead...

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£131.37 - £131.37
£131.37
£134.34
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£134.35

James Gaskets Motor Gasket Kit. 3-3/4" Bore Twin Cam – 2005–2017 88"/96" Twin Cam

Only 2 left!

James Gaskets Motor Gasket Kit. 3-3/4" Bore Twin Cam – 2005–2017 88"/96" Twin Cam .045" fire-ring head gaskets with silicone bead. Iincludes all ga...

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£131.38 - £131.38
£131.38
£134.35
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£134.35

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