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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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£29.05
£29.05 - £29.05
£29.05
£26.22
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£26.22

MCS Delphi Fuel Check Valve Kit, for Softail – 2001–2007 Softail

Only 3 left!

MCS Delphi Fuel Check Valve Kit, for Softail – 2001–2007 Softail Stock style replacement for Delphi fuel injected bikes. Kit includes internal fuel...

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£29.05
£29.05 - £29.05
£29.05
£26.22
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£26.22
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£29.79
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£29.79
£26.88
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£26.88

MCS Delphi Fuel Check Valve Kit, for Softail – 2008–2017 Softail

Only 3 left!

MCS Delphi Fuel Check Valve Kit, for Softail – 2008–2017 Softail Stock style replacement for Delphi fuel injected bikes. Kit includes internal fuel...

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£29.79
£29.79 - £29.79
£29.79
£26.88
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£26.88
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£28.17
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£28.17
£25.42
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£25.42

MCS Delphi Fuel Check Valve Kit, for FLT/Touring – 1999–2002 FLT/Touring

Only 2 left!

MCS Delphi Fuel Check Valve Kit, for FLT/Touring – 1999–2002 FLT/Touring Stock style replacement for Delphi fuel injected bikes. Kit includes inter...

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£28.17
£28.17 - £28.17
£28.17
£25.42
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£25.42
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£28.01
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£28.01
£25.28
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£25.28

MCS Delphi Fuel Check Valve Kit, for FLT/Touring – 2003–2007 FLT/Touring

Only 2 left!

MCS Delphi Fuel Check Valve Kit, for FLT/Touring – 2003–2007 FLT/Touring Stock style replacement for Delphi fuel injected bikes. Kit includes inter...

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£28.01
£28.01 - £28.01
£28.01
£25.28
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£25.28
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£29.87
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£29.87
£26.95
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£26.95

MCS Delphi Fuel Check Valve Kit, for Touring – 2008–2025 Touring; 2009–2025 Trike

Only 1 left!

MCS Delphi Fuel Check Valve Kit, for Touring – 2008–2025 Touring; 2009–2025 Trike Stock style replacement for Delphi fuel injected bikes. Kit inclu...

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£29.87
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£29.87
£26.95
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£26.95
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£42.87
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£42.87
£39.46
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£39.46

MCS EFI External Fuel Line, Tank to Fuel Rail – 2007–2020 XL Sportster

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MCS EFI External Fuel Line, Tank to Fuel Rail – 2007–2020 XL Sportster Complete fuel line; from fuel tank to fuel rail; with required connectors. D...

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£42.87
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£42.87
£39.46
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£39.46
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£33.33
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£33.33
£30.68
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£30.68

MCS EFI External Fuel Line, Tank to Fuel Rail – 2001–2017 Softail; 2007 FLT/Touring

Only 3 left!

MCS EFI External Fuel Line, Tank to Fuel Rail – 2001–2017 Softail; 2007 FLT/Touring Complete fuel line; from fuel tank to fuel rail; with required ...

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£33.33
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£33.33
£30.68
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£30.68
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£42.33
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£42.33
£38.96
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£38.96

MCS EFI External Fuel Line, Tank to Fuel Rail – 2004–2017 Dyna; 2002–2006 FLT/Touring

Only 3 left!

MCS EFI External Fuel Line, Tank to Fuel Rail – 2004–2017 Dyna; 2002–2006 FLT/Touring Complete fuel line; from fuel tank to fuel rail; with require...

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£42.33
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£42.33
£38.96
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£38.96
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£40.44
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£40.44
£37.22
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£37.22

MCS EFI External Fuel Line, Tank to Fuel Rail – 2016–2017 Softail; 2017 FXDLS; 2008–2016…

Only 3 left!

MCS EFI External Fuel Line, Tank to Fuel Rail – 2016–2017 Softail; 2017 FXDLS; 2008–2016… Complete fuel line; from fuel tank to fuel rail; with req...

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£40.44
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£40.44
£37.22
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£37.22
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£27.16
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£27.16
£24.50
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£24.50

MCS Fuel Filter Kit, XL Sportster – 2007–2022 XL Sportster

Only 3 left!

MCS Fuel Filter Kit, XL Sportster – 2007–2022 XL Sportster From fuel tank to fuel pump. Stock style replacement. Includes a fuel filter kit to serv...

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£27.16
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£27.16
£24.50
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£24.50
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£28.49
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£28.49
£25.71
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£25.71

MCS Fuel Filter Kit – 1995–1999 FLT/Touring

Only 1 left!

MCS Fuel Filter Kit – 1995–1999 FLT/Touring From fuel tank to fuel pump. Stock style replacement. Includes a fuel filter kit to service fuel inject...

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£28.49
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£28.49
£25.71
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£25.71
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£9.34
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£9.34
£8.06
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£8.06

MCS Fuel Filter Kit – 2008–2017 Softail; 2004–2017 Dyna…

Only 3 left!

MCS Fuel Filter Kit – 2008–2017 Softail; 2004–2017 Dyna… From fuel tank to fuel pump. Stock style replacement. Includes a fuel filter kit to servic...

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£9.34
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£9.34
£8.06
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£8.06
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£28.01
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£28.01
£25.28
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£25.28

MCS Fuel Filter Kit – 2001–2007 Softail; 2002–2007 FLT/Touring

Only 3 left!

MCS Fuel Filter Kit – 2001–2007 Softail; 2002–2007 FLT/Touring From fuel tank to fuel pump. Stock style replacement. Includes a fuel filter kit to ...

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£28.01
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£28.01
£25.28
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£25.28
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£23.65
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£23.65
£21.07
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£21.07

Gardner-Westcott Oil Hose Tee 3-Way. 3/8". Chrome – 1979–1984 FLT/Touring; 1982–1983 FXR…

Only 3 left!

Gardner-Westcott Oil Hose Tee 3-Way. 3/8". Chrome – 1979–1984 FLT/Touring; 1982–1983 FXR… Chrome plated steel T-fitting. 3-way connector for 3/8" (...

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£23.65
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£23.65
£21.07
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£21.07
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£25.60
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£25.60
£23.10
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£23.10

MCS Oil Cooler Mounting Clamp 1-1/8" to 1-1/8" – Universal

Only 3 left!

MCS Oil Cooler Mounting Clamp 1-1/8" to 1-1/8" – Universal Chrome plated aluminum. Used to help install the 905412 & 905411 style frame mounted...

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£25.60
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£25.60
£23.10
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£23.10
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£8.61
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£8.61
£8.20
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£8.20

MCS Adapter Oil Line Fitting, 90 Degrees. 1/4" NPT. Chrome

in stock

MCS Adapter Oil Line Fitting, 90 Degrees. 1/4" NPT. Chrome 90° elbow adapter. 1/4 NPT male to 1/4 NPT female threaded. Product Details Brand: MCS...

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£8.61
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£8.61
£8.20
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£8.20
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£32.22
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£32.22
£29.65
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£29.65

Gardner-Westcott Oil Pump & Line Fitting Set – 1984–1991 Big Twin

Only 2 left!

Gardner-Westcott Oil Pump & Line Fitting Set – 1984–1991 Big Twin Brass Fitment 84-91 Big Twin (NU) Product Details Brand: Gardner-Westcott ...

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£32.22
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£32.22
£29.65
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Sold out
£13.22
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£13.22
£11.40
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£11.40

Gardner-Westcott Gardner-Wescott, S&S Carb & Filter Bolt Kit. Allen Head – All S&S Carburetor with S&S Teardrop Air…

Out of stock

Gardner-Westcott Gardner-Wescott, S&S Carb & Filter Bolt Kit. Allen Head – All S&S Carburetor with S&S Teardrop Air… Includes 3 fla...

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£13.22
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£13.22
£11.40
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£11.40
Sold out
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£21.64
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£21.64
£21.34
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£21.34

James Gaskets Swingarm/Wheel Seal. Rubber OD – Wheel FR&RR: 1984–1999 Big Twin; XL…

Only 4 left!

James Gaskets Swingarm/Wheel Seal. Rubber OD – Wheel FR&RR: 1984–1999 Big Twin; XL… 250" wide. Single lip. OEM replacement reference 47519-83A ...

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£21.64
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£21.64
£21.34
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£21.34
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£33.11
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£33.11
£32.65
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£32.65

James Gaskets James Wheel Seal. Rubber – Laced Wheel Rear: 1967–1972 FL;1971–1972…

Only 3 left!

James Gaskets James Wheel Seal. Rubber – Laced Wheel Rear: 1967–1972 FL;1971–1972… James wheel seal. Rubber Fitment Laced wheel Rear: 67-72 FL;71-7...

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£33.11
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£33.11
£32.65
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£32.65
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£7.28 - £7.28
£7.28
£8.15
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£8.15

MCS Oil Drain Plug. Magnetic – Oil Tank: 1941–1984 FL; 1971–1984 FX…

Only 2 left!

MCS Oil Drain Plug. Magnetic – Oil Tank: 1941–1984 FL; 1971–1984 FX… 1/2"-20 hex head. OEM replacement reference 60348-65B Fitment Oil tank: 41-84 ...

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£7.28
£8.15
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£9.84
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£9.84

MCS Primary Oil Drain Plug. Magnetic – Transmission: 1980–1992 FLT/Touring…

Only 3 left!

MCS Primary Oil Drain Plug. Magnetic – Transmission: 1980–1992 FLT/Touring… 5/8"-18 threaded. Hex head. OEM replacement reference 722A Fitment Tran...

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£8.79
£9.84
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£9.84
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£11.13
£12.29
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£12.29

MCS Oil Drain Plug. 1/4"-18 N.P.T. Magnetic – Fork Slider Drain Plug: 49-E77 FL.…

Only 2 left!

MCS Oil Drain Plug. 1/4"-18 N.P.T. Magnetic – Fork Slider Drain Plug: 49-E77 FL.… Pipe plug. Allen head (socket head). Multiple drain plug applicat...

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£11.13 - £11.13
£11.13
£12.29
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£12.29
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£7.68
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£6.63
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£6.63

MCS Oil Line Fitting, Straight. Chrome – Primary Vent: 1966–1984 FL; 71-E84 FX…

Only 3 left!

MCS Oil Line Fitting, Straight. Chrome – Primary Vent: 1966–1984 FL; 71-E84 FX… Oil line nipple 1/8-27 NPT threaded to 3/8" (9.5mm) inside diameter...

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£7.68
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£6.63
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£6.63
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