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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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£19.71
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£19.71
£18.76
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£18.76

Cometic Carb/Throttle Body to Air Cleaner Housing. AFM – CV Carburetor: 1995–2000 Evo Big Twin…

Only 1 left!

Cometic Carb/Throttle Body to Air Cleaner Housing. AFM – CV Carburetor: 1995–2000 Evo Big Twin… .060" AFM. Fits between carb & air cleaner hous...

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£19.71
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£19.71
£18.76
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£18.76
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£21.56
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£21.56
£20.53
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£20.53

Cometic Cam Gear Change Gasket Kit. 70-92 B.T – 1970–1992 Big Twin

Out of stock

Cometic Cam Gear Change Gasket Kit. 70-92 B.T – 1970–1992 Big Twin Metal base. Complete with all gaskets and seals you need when the camshaft is re...

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£21.56
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£21.56
£20.53
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£20.53
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£7.14
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£7.14
£6.57
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£6.57

Cometic Pushrod Cover Seal Kit – L1981–1984 Big Twin

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Cometic Pushrod Cover Seal Kit – L1981–1984 Big Twin Includes lower & middle o-rings with upper quad style seals. Includes a complete set of 12...

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£7.14
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£7.14
£6.57
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£6.57
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£5.66
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£5.66
£5.20
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£5.20

Cometic Pushrod Cover Seal Kit – L79-E81 Big Twin

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Cometic Pushrod Cover Seal Kit – L79-E81 Big Twin OEM style o-ring seals. Includes a complete set of 12 seals to service one engine Fitment L79-E81...

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£5.66
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£5.66
£5.20
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£5.20
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£8.28
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£8.28
£7.62
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£7.62

Cometic Tappet Block Gaskets. FR/RR. AFM – 1999–2017 Twin Cam

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Cometic Tappet Block Gaskets. FR/RR. AFM – 1999–2017 Twin Cam .060" thick AFM (Aluminum Foamet Material). These gaskets have an aluminum base with ...

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£8.28
£7.62
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£7.62
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£27.71
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£27.71
£26.38
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£26.38

Cometic Cylinder Base Gasket Set FR/RR. .020" RCS – 1948–1962 Panhead

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Cometic Cylinder Base Gasket Set FR/RR. .020" RCS – 1948–1962 Panhead Front & rear set. .020" thick RCS (Rubber Coated Steel); an embossed stee...

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£27.71
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£27.71
£26.38
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£26.38
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£20.26
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£20.26
£19.29
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£19.29

Cometic Gasket Transmission End Cover. AFM – 1980–1986 FLT/Touring; FXR

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Cometic Gasket Transmission End Cover. AFM – 1980–1986 FLT/Touring; FXR AFM (aluminum Foamet Material). Used between transmission bearing housing a...

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£20.26
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£20.26
£19.29
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£19.29
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£11.28
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£11.28
£10.38
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£10.38

Cometic Gasket Transmission Top Cover. .032" AFM – 36-E79 Big Twin with Ratchet Top…

Out of stock

Cometic Gasket Transmission Top Cover. .032" AFM – 36-E79 Big Twin with Ratchet Top… .032" AFM (Aluminum Foamet Material). Fits ratchet top type tr...

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£11.28
£10.38
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£10.38
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£8.01
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£8.01
£7.37
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£7.37

Cometic Gasket Transmission Shifter Adapter Plate. AFM – 52-E79 Big Twin with Foot Shift

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Cometic Gasket Transmission Shifter Adapter Plate. AFM – 52-E79 Big Twin with Foot Shift .032" thick AFM (Aluminum Foamet Material). Fits with ratc...

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£8.01
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£8.01
£7.37
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£7.37
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£16.95
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£16.95
£16.14
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£16.14

Cometic. Gasket Transmission Shifter Cover. AFM – 52-E79 Big Twin with Foot Shift

Out of stock

Cometic. Gasket Transmission Shifter Cover. AFM – 52-E79 Big Twin with Foot Shift .032" thick AFM (Aluminum Foamet Material). OEM replacement refer...

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£16.95
£16.95 - £16.95
£16.95
£16.14
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£16.14
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£9.69
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£9.69
£8.92
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£8.92

Cometic Gasket Transmission Shifter Shaft Cover. AFM – L1979–1986 4-Speed Big Twin

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Cometic Gasket Transmission Shifter Shaft Cover. AFM – L1979–1986 4-Speed Big Twin .031" thick AFM (Aluminum Foamet Material). Fits with rotary top...

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£9.69
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£9.69
£8.92
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£8.92
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£8.01
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£8.01
£7.37
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£7.37

Cometic Gasket Transmission Top Cover. .032" AFM – L1979–1986 4-Speed Big Twin

Only 2 left!

Cometic Gasket Transmission Top Cover. .032" AFM – L1979–1986 4-Speed Big Twin .032" AFM (Aluminum Foamet Material). Fits transmissions with rotary...

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£8.01
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£8.01
£7.37
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£7.37
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£42.46
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£42.46
£40.42
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£40.42

Cometic Gasket Transmission End Cover. .032" AFM – 1936–1986 4-Speed Big Twin

Only 1 left!

Cometic Gasket Transmission End Cover. .032" AFM – 1936–1986 4-Speed Big Twin .032" thick AFM (Aluminum Foamet Material). OEM replacement reference...

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£42.46
£42.46 - £42.46
£42.46
£40.42
£40.42 - £40.42
£40.42
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£8.01
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£8.01
£7.37
£7.37 - £7.37
£7.37

Cometic Gasket Speedometer Drive Unit. AFM – 1936–1984 4-Speed Big Twin with…

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Cometic Gasket Speedometer Drive Unit. AFM – 1936–1984 4-Speed Big Twin with… AFM (Aluminum Foamet Material). OEM replacement reference 67141-36 (1...

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£8.01
£8.01 - £8.01
£8.01
£7.37
£7.37 - £7.37
£7.37
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£16.18
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£16.18
£15.41
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£15.41

Cometic Gasket Starter Cover. .060" AFM – 1982 Classic; 1983–1984 FLH; 1980–1986…

Out of stock

Cometic Gasket Starter Cover. .060" AFM – 1982 Classic; 1983–1984 FLH; 1980–1986… .060" thick AFM (Aluminum Foamet Material). For belt drive models...

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£16.18
£16.18 - £16.18
£16.18
£15.41
£15.41 - £15.41
£15.41
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£8.01
£8.01 - £8.01
£8.01
£7.37
£7.37 - £7.37
£7.37

Cometic Gasket Starter Cover Housing. .060" AFM – 1982–1983 FL; 1980–1985 FX. With Rear…

Only 2 left!

Cometic Gasket Starter Cover Housing. .060" AFM – 1982–1983 FL; 1980–1985 FX. With Rear… .060" thick AFM (Aluminum Foamet Material). OEM replacemen...

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£8.01
£8.01 - £8.01
£8.01
£7.37
£7.37 - £7.37
£7.37
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£33.28
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£33.28
£31.68
£31.68 - £31.68
£31.68

Cometic Gasket Transmission Top Cover. AFM – 1980–1985 FLT/Touring; FXR

Only 2 left!

Cometic Gasket Transmission Top Cover. AFM – 1980–1985 FLT/Touring; FXR AFM (Aluminum Foamet Material). OEM replacement reference 34904-79. Cometic...

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£33.28
£33.28 - £33.28
£33.28
£31.68
£31.68 - £31.68
£31.68
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£28.39
£28.39 - £28.39
£28.39
£27.03
£27.03 - £27.03
£27.03

Cometic Gasket Carb/Throttle Body to Air Cleaner Housing – 2001–2015 Softail; 2004–2017 Dyna…

Only 2 left!

Cometic Gasket Carb/Throttle Body to Air Cleaner Housing – 2001–2015 Softail; 2004–2017 Dyna… Paper. Early 01-05 design; but will also fit 06-17 mo...

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£28.39
£28.39 - £28.39
£28.39
£27.03
£27.03 - £27.03
£27.03
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£48.29
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£48.29
£45.97
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£45.97

Cometic Gasket Transmission Oil Pan. AFM – 1991–1998 Dyna

Only 2 left!

Cometic Gasket Transmission Oil Pan. AFM – 1991–1998 Dyna AFM (Aluminum Foamet Material). OEM replacement reference 26072-90A. Cometic''s AFM gaske...

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£48.29
£48.29 - £48.29
£48.29
£45.97
£45.97 - £45.97
£45.97
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£13.86
£13.86 - £13.86
£13.86
£13.20
£13.20 - £13.20
£13.20

Cometic Gasket Transmission Oil Spout (Filler). AFM – 1991–1998 Dyna

Only 2 left!

Cometic Gasket Transmission Oil Spout (Filler). AFM – 1991–1998 Dyna AFM. (Aluminum Foamet Material). OEM replacement reference 62423-90; 62423-90A...

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£13.86
£13.86 - £13.86
£13.86
£13.20
£13.20 - £13.20
£13.20
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£38.69
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£38.69
£36.83
£36.83 - £36.83
£36.83

Cometic Gasket Transmission Top Cover. AFM – 1991–1998 Dyna

Only 2 left!

Cometic Gasket Transmission Top Cover. AFM – 1991–1998 Dyna AFM (Aluminum Foamette Material). OEM replacement reference 34917-90B. Cometic''s AFM g...

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£38.69
£38.69 - £38.69
£38.69
£36.83
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£36.83
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£29.01
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£29.01
£27.62
£27.62 - £27.62
£27.62

Cometic Gasket Transmission End Cover. AFM – 1987–2006 Big Twin

Out of stock

Cometic Gasket Transmission End Cover. AFM – 1987–2006 Big Twin AFM (Aluminum Foamet Material). Used between the transmission bearing housing and t...

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£29.01
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£29.01
£27.62
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£27.62
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£4.79
£4.79 - £4.79
£4.79
£4.40
£4.40 - £4.40
£4.40

Cometic Pushrod Cover Seals. Large Lower Rubber – 48-E79 Big Twin

Out of stock

Cometic Pushrod Cover Seals. Large Lower Rubber – 48-E79 Big Twin Rubber seal. Upgraded replacement for the OEM 17955-48 style cork seal Fitment 48...

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£4.79
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£4.79
£4.40
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£4.40
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£11.28
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£11.28
£10.38
£10.38 - £10.38
£10.38

Cometic Oil Pump Body to Case Gasket. .032" AFM – 1977–1990 XL Sportster

Only 2 left!

Cometic Oil Pump Body to Case Gasket. .032" AFM – 1977–1990 XL Sportster .032" thick AFM. AFM (Aluminum Foamet Material) gaskets are made with an a...

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£11.28
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£11.28
£10.38
£10.38 - £10.38
£10.38
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