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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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£12.42
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James Gaskets Aircleaner Backplate to Filter Element Gasket. Foamet – 2008–2013 FLT/Touring with 2.200" Bore

Only 2 left!

James Gaskets Aircleaner Backplate to Filter Element Gasket. Foamet – 2008–2013 FLT/Touring with 2.200" Bore Foamet. 2.200" bore. Used between the ...

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£9.11
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James Gaskets CV Carburetor to S&S Manifold Seal. 40-44 Keihin – 1990–2006 Big Twin; 1988–2006 XL…

Only 2 left!

James Gaskets CV Carburetor to S&S Manifold Seal. 40-44 Keihin – 1990–2006 Big Twin; 1988–2006 XL… U-ring; extra thick; used with S&S manuf...

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£30.28
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James Gaskets Piston Cooling Jet Gasket – 2004–2022 XL Sportster; 2008–2012 XR1200

Only 2 left!

James Gaskets Piston Cooling Jet Gasket – 2004–2022 XL Sportster; 2008–2012 XR1200 Replacement gaskets for piston oil jets. OEM replacement referen...

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£30.28
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£29.86
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£19.50
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James Gaskets Oil Pump Body to Case Gaskets. Paper – 1936–1940 E; EL Knucklehead

Out of stock

James Gaskets Oil Pump Body to Case Gaskets. Paper – 1936–1940 E; EL Knucklehead Replacement Big Twin oil pump gaskets. OEM replacement reference 2...

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£19.50
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£19.23
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£33.11
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£32.65
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£32.65

James Gaskets Cam Cover Gaskets. .035" Foamet – 1991–1999 XL Sportster

Only 2 left!

James Gaskets Cam Cover Gaskets. .035" Foamet – 1991–1999 XL Sportster .035" thick Foamet with a silicone bead. Final crush .022". Foamet gasket ma...

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£33.11
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£33.11
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James Gaskets Cam Cover Gaskets. .035" Foamet – 1986–1990 XL Sportster

Only 2 left!

James Gaskets Cam Cover Gaskets. .035" Foamet – 1986–1990 XL Sportster .035" thick Foamet. Final crush .022". Foamet gasket material has an aluminu...

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£33.11
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£33.11
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£33.11
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James Gaskets Gasket Cam Cover. .035" Foamet – 1982–1985 XL Sportster; XR1000

Only 2 left!

James Gaskets Gasket Cam Cover. .035" Foamet – 1982–1985 XL Sportster; XR1000 .035" thick Foamet. Final crush .022". Foamet gasket material has an ...

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£69.21
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James Gaskets Cam Cover Gasket. .035" Foamet/Silicone – 1999–2017 Twin Cam

Only 3 left!

James Gaskets Cam Cover Gasket. .035" Foamet/Silicone – 1999–2017 Twin Cam .035" Foamet with a silicone bead. Final crush .022. Foamet gasket mater...

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£14.42
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James Gaskets Tappet Cover Gasket Set. FR/RR. Foamet. 2-Pk – 1999–2017 Twin Cam

Only 1 left!

James Gaskets Tappet Cover Gasket Set. FR/RR. Foamet. 2-Pk – 1999–2017 Twin Cam .060" Foamet gasket material has an aluminum core with a nitrile sy...

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£14.22
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£36.22
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James Gaskets Tappet Block Gaskets. Front. Foamet – 1948–1999 Big Twin

Only 3 left!

James Gaskets Tappet Block Gaskets. Front. Foamet – 1948–1999 Big Twin Foamet gasket material has an aluminum core with a nitrile synthetic rubber ...

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£36.22
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£36.22
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£36.22
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James Gaskets Tappet Block Gaskets. Rear. Foamet – 1948–1999 Big Twin

Only 3 left!

James Gaskets Tappet Block Gaskets. Rear. Foamet – 1948–1999 Big Twin Foamet gasket material has an aluminum core with a nitrile synthetic rubber f...

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£36.22
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£14.17
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James Gaskets Tappet Cover Gasket Set. .031" Foamet – 2004–2022 XL Sportster; 2008–2012 XR1200

Only 2 left!

James Gaskets Tappet Cover Gasket Set. .031" Foamet – 2004–2022 XL Sportster; 2008–2012 XR1200 .031" Foamet gasket material has an aluminum core wi...

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£25.82
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James Gaskets SEAL PUSHROD COVER SMALL RUBBER – 1936-1980 All Models

Out of stock

James Gaskets SEAL PUSHROD COVER SMALL RUBBER – 1936-1980 All Models SEAL PUSHROD COVER SMALL RUBBER Fitment 1936-1980 all models Product Details ...

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£25.82
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£15.67
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James Gaskets Rocker Cover Gasket Kit – 1936–1947 Knucklehead

Only 2 left!

James Gaskets Rocker Cover Gasket Kit – 1936–1947 Knucklehead Replacement valve cover gaskets only. Kit includes 4 gaskets to service one engine. O...

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£8.45
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James Gaskets O-ring Seal Derby Cover. Flat Style – 2006–2017 Dyna; 2007–2018 Softail…

Only 3 left!

James Gaskets O-ring Seal Derby Cover. Flat Style – 2006–2017 Dyna; 2007–2018 Softail… Flat style O-ring seal. OEM replacement reference 17369-06 F...

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£126.82
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£126.82

James Gaskets Motor Gasket Kit. 3-7/8" Bore – 1999–2016 Twin Cam with 3-7/8" Bore.…

Out of stock

James Gaskets Motor Gasket Kit. 3-7/8" Bore – 1999–2016 Twin Cam with 3-7/8" Bore.… Fits 88" to 95" (1550cc) or 96" to 103" (1690cc) 3-7/8" big bor...

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£126.82
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£37.07
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James Gaskets Rocker Cover Gasket Kit. Evo XL. Seals Only – 2007–2022 XL Sportster

Only 4 left!

James Gaskets Rocker Cover Gasket Kit. Evo XL. Seals Only – 2007–2022 XL Sportster Includes 2x small inner & 2 large outer rubber gasket seals ...

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£36.78 - £36.78
£36.78
£37.07
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£108.15
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James Gaskets Motor Gasket Kit. Panhead – 1948–1965 61" (1000cc) EL & 74" 1200cc…

Only 3 left!

James Gaskets Motor Gasket Kit. Panhead – 1948–1965 61" (1000cc) EL & 74" 1200cc… Includes Foamet® (Foam with aluminum base) base gaskets; 0.04...

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£105.76 - £105.76
£105.76
£108.15
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£33.87
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£33.87
£33.40
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£33.40

James Gaskets Cylinder Head Gasket Set 4-1/8" Bore. .045" Graphite – S&S Evo & Twin Cam Style 4-1/8" Bore…

Only 2 left!

James Gaskets Cylinder Head Gasket Set 4-1/8" Bore. .045" Graphite – S&S Evo & Twin Cam Style 4-1/8" Bore… .045" thick cylinder head gasket...

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£33.87
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£33.40
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£42.52
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James Gaskets Cylinder Base. RCM .010" – 1984–1999 Big Twin; 1986–2022 XL…

Only 2 left!

James Gaskets Cylinder Base. RCM .010" – 1984–1999 Big Twin; 1986–2022 XL… .010" thick RCM (Rubber Covered Metal). With silicone bead. Type ''B''. ...

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James Gaskets Cylinder Base. RCM .016" – 1984–1999 Big Twin; 1986–2022 XL…

Only 2 left!

James Gaskets Cylinder Base. RCM .016" – 1984–1999 Big Twin; 1986–2022 XL… .016" thick RCM (Rubber Covered Metal). With silicone bead. Type ''B''. ...

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£64.82
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James Gaskets Cylinder Head Gasket Set 4" Bore. .045" Firering – 1999–2017 110" Twin Cam

Only 3 left!

James Gaskets Cylinder Head Gasket Set 4" Bore. .045" Firering – 1999–2017 110" Twin Cam .045" thick fire ring head gaskets. Final crush .042". Wit...

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£64.32 - £64.32
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£64.82
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£12.22
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James Gaskets O-ring Breather – 2008–2012 XR1200

Only 2 left!

James Gaskets O-ring Breather – 2008–2012 XR1200 2 used on 1 bike between umbrella valve & breather in the rocker cover. OEM replacement refere...

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£12.22
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£11.87
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James Gaskets O-ring 5Th. Gear Mainshaft Transmission – 2006–2022 XL Sportster; 2008–2012 XR1200

Only 2 left!

James Gaskets O-ring 5Th. Gear Mainshaft Transmission – 2006–2022 XL Sportster; 2008–2012 XR1200 OEM replacement reference 11113. Fitment 06-22 XL ...

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