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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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£53.73 - £53.73
£53.73
£54.37
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£54.37

James Gaskets Cylinder Head Gasket .045" Graphite – 1984–1999 Big Twin; 1988–2022 XL…

Low stock

Description .045" graphite gasket; with Firering. Starting thickness .048"; final crush .042". Standard 3.5" bore. OEM replacement reference 16770-...

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£53.73 - £53.73
£53.73
£54.37
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£54.37
£24.58 - £24.58
£24.58
£28.54
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£28.54

James Gaskets Gasket Transmission End Cover. Paper/Silicone – 1936–1986 4-Speed Big Twin

Low stock

Description .020" fiber reinforced paper with a silicone bead. OEM replacement reference 33295-36 / 2132-36. Fitment 36-86 4-speed Big Twin (NU) Pr...

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£24.58 - £24.58
£24.58
£28.54
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£28.54
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£80.79
£81.75
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£81.75

James Gaskets Cylinder Head 3.5" Bore .062" – 1984–1999 Big Twin; 1988–2022 XL…

Low stock

Description .062" with fire-ring and armor. Standard thickness. Starting thickness .064"; final crush .056". Incl. O-rings. OEM replacement referen...

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£80.79 - £80.79
£80.79
£81.75
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£81.75
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£9.08
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£9.08
£8.68
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£8.68

James Gaskets O-Ring Crankcase to Cam Support – 1999–2017 Twin Cam

Low stock

Description 2 used. OEM replacement reference 11301. Fitment 99-17 Twin Cam (NU) Product Details Brand: James Gaskets Category: GASKETS > O-R...

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£9.08
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£9.08
£8.68
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£8.68
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£115.41
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£115.41
£107.98
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£107.98

James Gaskets Motor Gasket Kit. 95-99 Evo B.t – 1992–1999 Evo Big Twin

Low stock

Description Includes 0.045" Firering® head gaskets; RCM (Rubber Coated Metal) cylinder and rocker base gaskets; rubber rocker cover gaskets. Includ...

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£115.41
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£115.41
£107.98
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£107.98
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£150.38
£154.43
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£154.43

James Gaskets Gasket Primary Cover. .062" Paper/Silicone – 1994 FXR; 1994–2006 FLT/Touring

Low stock

Description .062" fiber reinforced paper with a silicone bead. OEM replacement reference 34901-94; 34901-94A; 34901-94C. Fitment 1994 FXR; 94-06 FL...

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£150.38 - £150.38
£150.38
£154.43
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£154.43
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£6.69
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£6.69
£6.47
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£6.47

MCS Cable Guide, Keihin CV Carburetor – 1990–2006 Big Twin; 1988–2006 XL…

In stock

Description OEM replacement reference 27580-88. Fitment 90-06 Big Twin; 88-06 XL Sportster. With CV carburetor (NU) Product Details Brand: MCS C...

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£6.69
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£6.69
£6.47
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£6.47
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£16.52
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£16.52
£15.79
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£15.79

Fuel-Tool Fuel Line Rebuild Kit – 2001–2026 H-D with Delphi Fuel Injection

Low stock

Description Includes one o-ring. Complete kit to rebuild the external fuel line; at the fuel tank end. Includes chemically resistant internal Viton...

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£16.52
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£16.52
£15.79
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£15.79
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£62.76 - £62.76
£62.76
£63.51
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£63.51

James Gaskets Cam Cover Gaskets. .062" Foamet/Silicone – 2018–2025 Softail; 2017–2025…

Low stock

Description .062" Foamet (Foam Coated Metal) with a silicone bead. OEM replacement reference 25700370. Foamet gasket material has an aluminum core ...

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£62.76
£63.51
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£63.51
Sold out
£12.88
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£12.88
£10.20
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£10.20

MCS Exhaust Gaskets. 91-09 Style – 1984–2026 Big Twin; 1986–2022 XL…

Out of stock

Description ''late'' 91-09 conical style. Note: The 86-03/10-up style is preferred by many for better flow characteristics. Note: The 91-09 late st...

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£12.88
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£12.88
£10.20
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£10.20
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£26.49
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£26.49
£26.23
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£26.23

James Gaskets Float Bowl to Carb Body Seal. Keihin CV – 1992–2006 Big Twin; 1992–2006 XL…

Low stock

Description Rubber float bowl seal used between carb body and floatbowl. OEM replacement reference 27577-92. Fitment 92-06 Big Twin; 92-06 XL Sport...

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£26.49
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£26.49
£26.23
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£26.23
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£26.57
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£26.57
£26.31
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£26.31

James Gaskets Exhaust Studs – 1984–2026 Big Twin; 1986–2022 XL…

Low stock

Description 5/16-18 to 5/16-24 X 1-11/16". Note: Exhaust studs as used in the M8 engine (OEM 10900015; 10900015A) are of a slightly different desig...

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£26.57
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£26.31
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£26.31
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£6.27
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£6.27
£5.79
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£5.79

CV Performance Slow Jet (Pilot Jet) Keihin CV Carb. 48 – 1989–2006 Big Twin; 1988–2006 XL…

Low stock

Description CVP, slow jet (pilot jet) Keihin CV carb. 48 Fitment 89-06 Big Twin; 88-06 XL Sportster (NU) with CV carburetor Product Details Brand...

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£6.27
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£6.27
£5.79
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£5.79
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£6.27
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£5.79
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£5.79

CV Performance Slow Jet (Pilot Jet) Keihin CV Carb. 46 – 1989–2006 Big Twin; 1988–2006 XL…

Low stock

Description CVP, slow jet (pilot jet) Keihin CV carb. 46 Fitment 89-06 Big Twin; 88-06 XL Sportster (NU) with CV carburetor Product Details Brand...

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£6.27
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£6.27
£5.79
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£5.79
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£22.12
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£22.12
£20.86
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£20.86

CV Performance Velocity Needle CV Carb – 1989–1999 1340 Evo Big Twin with CV…

Low stock

Description Jet needle for slide (mid range). Calibrated for 89-99 1340 Evo B.T. models Fitment 89-99 1340 Evo Big Twin with CV carburetor (NU) Pro...

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£22.12
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£22.12
£20.86
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£20.86
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£10.32
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£10.32
£9.87
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£9.87

James Gaskets Point Cover Gasket. .031" Paper – 1970–1999 Evo Big Twin; 1971–2003 XL…

Low stock

Description .031" thick paper. With 4 holes. OEM replacement reference 32591-80. Fitment 70-99 Evo Big Twin; 71-03 XL Sportster (NU) Product Detail...

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£10.32
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£10.32
£9.87
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£9.87
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£152.16
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£152.16
£128.82
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£128.82

MCS Gas Tank, Custom Sportster Low Tunnel 2.8 Gallon – Universal

Low stock

Description 2.8 gallon (10.6 liter). Custom low tunnel Sportster style gas tank for universal applications. Compatible with the pre-83 bajonet styl...

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£152.16
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£152.16
£128.82
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£128.82
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£78.07
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£78.07
£73.63
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£73.63

K&N Evo Straight Air Cleaner Element for Se – Screamin'' Eagle Evo Big Twin with 8"…

Low stock

Description 1.938" (49 mm) x 7" (178 mm) diameter metal top has centered 5/16" NC weld nut to attach cover. Top plate is three-hole-drilled to fit ...

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£78.07
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£78.07
£73.63
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£73.63
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£128.86 - £128.86
£128.86
£132.33
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£132.33

James Gaskets Gasket Primary Cover. .031" Paper/Silicone – 2004–2022 XL Sportster; 2008–2012 XR1200

Low stock

Description .031" fiber reinforced paper with a silicone bead. OEM replacement reference 34955-04. Fitment 04-22 XL Sportster; 08-12 XR1200 (NU) Pr...

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£128.86 - £128.86
£128.86
£132.33
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£132.33
£91.32 - £91.32
£91.32
£92.41
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£92.41

James Gaskets Gasket Primary Cover. .031" Paper – 1991–2003 XL Sportster

Low stock

Description .031" fiber reinforced paper. OEM replacement reference 34955-89; 34955-89A. Fitment 91-03 XL Sportster (NU) Product Details Brand: J...

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£91.32 - £91.32
£91.32
£92.41
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£92.41
Sold out
£30.06
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£30.06
£26.51
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£26.51

Dynatek Single Fire Tach Adapter for Dyna-S – 1970–1999 Big Twin with Dyna-S Single…

Out of stock

Description Used to correct electronic tachometer output when using a Dyna-S single fire ignition module. Note: This adapter cannot be used with Sp...

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£30.06
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£30.06
£26.51
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£15.25
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£15.25
£12.48
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£12.48

MCS Exhaust Tie Wraps 8" Long Black Stainless – Up to 2" Diameter Exhaust Pipes

In stock

Description Low profile 304 stainless steel cable-ties to secure exhaust wrap ends. 7.9mm wide. 8" long is okay for up to 2" diameter pipes. Fitmen...

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£15.25
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£15.25
£12.48
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£12.48
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£19.94
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£19.94
£19.74
£19.74 - £19.74
£19.74

James Gaskets Gasket Transmission End Cover. .031" Paper – 1987–1992 Big Twin

Low stock

Description .031" fiber reinforced paper. With o-rings. Used between the transmission bearing housing and the transmission end cover. OEM replaceme...

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£19.94
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£19.94
£19.74
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£19.74
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£10.96 - £10.96
£10.96
£14.13
£14.13 - £14.13
£14.13

James Gaskets CV Carburetor to Manifold Seal. Keihin – 1990–2006 Big Twin; 1988–2006 XL…

Low stock

Description OEM replacement reference 27002-89. Fitment 90-06 Big Twin; 88-06 XL Sportster. With Keihin CV carburetor (NU) Product Details Brand:...

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£10.96 - £10.96
£10.96
£14.13
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£14.13

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