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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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£29.15 - £29.15
£29.15
£30.95
£30.95 - £30.95
£30.95

MCS Gas Cap Vented with Lock, Chrome – 1983–1995 H-D

Only 3 left!

MCS Gas Cap Vented with Lock, Chrome – 1983–1995 H-D Includes 2 keys. With key hole cover Fitment 83-95 H-D (NU) (excl. FLT) Product Details Bran...

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£29.15 - £29.15
£29.15
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£29.29
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£28.88
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£28.88

James Gaskets Floatbowl to Carb Body Seal. Keihin – 1979–1982 XL Sportster; L1978–1983 Big…

Only 3 left!

James Gaskets Floatbowl to Carb Body Seal. Keihin – 1979–1982 XL Sportster; L1978–1983 Big… Rubber floatbowl seal used between carb body and floatb...

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£29.29
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£29.29
£28.88
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£28.88
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£9.38
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MCS Muffler Middle Clamp 1-7/8" Black – Universal

Only 3 left!

MCS Muffler Middle Clamp 1-7/8" Black – Universal Black universal middle clamp; made from steel; with an 1-7/8" (4.8cm) inside diameter and without...

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£9.38
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£9.28
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£8.27

MCS Muffler Middle Clamp 1-3/4" Black – Universal

Only 3 left!

MCS Muffler Middle Clamp 1-3/4" Black – Universal Black universal middle clamp; made from steel; with an 1-3/4" (4.4cm) inside diameter and without...

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£9.28
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£9.28
£8.27
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£8.27
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£7.47
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MCS Muffler Middle Clamp 1-1/2" Black – Universal

Only 1 left!

MCS Muffler Middle Clamp 1-1/2" Black – Universal Black universal middle clamp; made from steel; with an 1-1/2" (3.8cm) inside diameter and without...

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£12.72
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£12.11
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MCS Woodruff Keys, Oil Pump Drive Gear / Breather Gear – L1975–1989 Big Twin : Drive Shaft Shaft…

Only 5 left!

MCS Woodruff Keys, Oil Pump Drive Gear / Breather Gear – L1975–1989 Big Twin : Drive Shaft Shaft… Multi-application. Oil pump driven feed & dri...

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£12.72
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£3.18
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MCS Thrust Washer, Oil Pump – Oil Pump: 1991–2021 XL Sportster XR1200)

Only 3 left!

MCS Thrust Washer, Oil Pump – Oil Pump: 1991–2021 XL Sportster XR1200) 1 used on oil pump. Also for some fuel tank applications. Fitment Oil pump: ...

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£2.66
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MCS Spin-on Oil Filter. Chrome – 1999 Softail; 1999–2017 Twin Cam…

Only 3 left!

MCS Spin-on Oil Filter. Chrome – 1999 Softail; 1999–2017 Twin Cam… With 5-micron filtering media. OEM replacement reference 63798-99A. Note: This f...

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£11.59
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£19.00
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MCS Fuel Tank Top Plate Seal – 2002–2007 FLHT; FLTR; FLHR

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MCS Fuel Tank Top Plate Seal – 2002–2007 FLHT; FLTR; FLHR Viton rubber seal. 3mm thick. OEM style fuel tank top plate gasket used between fuel tank...

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£15.05
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MCS Fuel Tank Top Plate Seal – 2008–2025 FLT/Touring; 2009–2025 Trikes

Out of stock

MCS Fuel Tank Top Plate Seal – 2008–2025 FLT/Touring; 2009–2025 Trikes Viton rubber seal. 6.5mm thick. OEM style fuel tank top plate gasket used be...

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£13.40
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£18.48
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£16.68

MCS Fuel Tank Top Plate Seal – 2002–2017 Softail

Only 2 left!

MCS Fuel Tank Top Plate Seal – 2002–2017 Softail Viton rubber seal. 3mm thick. OEM style fuel tank top plate gasket used between fuel tank and fuel...

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£18.48
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£18.48
£16.68
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£16.68
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£7.38
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MCS Fuel Tank Top Plate Seal. Cork – 1995–2001 Fuel Injected FLT/Touring

Only 3 left!

MCS Fuel Tank Top Plate Seal. Cork – 1995–2001 Fuel Injected FLT/Touring 3mm thick cork. Used between the gas tank and the fuel sender plate of Mag...

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£7.38
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£6.36
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MCS Fuel Tank Top Plate Seal – 2007–2014 FXDC; 2008–2017 FXDF…

Only 3 left!

MCS Fuel Tank Top Plate Seal – 2007–2014 FXDC; 2008–2017 FXDF… Viton rubber seal. OEM style fuel tank top plate gasket used between fuel tank and f...

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£20.85
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£20.85
£18.82
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£21.57
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£19.47

MCS Fuel Tank Top Plate Seal – 2004–2009 & 2014–2017 FXDL; 2017 FXDLS…

Only 2 left!

MCS Fuel Tank Top Plate Seal – 2004–2009 & 2014–2017 FXDL; 2017 FXDLS… Viton rubber seal. 1.6mm thick. OEM style fuel tank top plate gasket use...

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£21.57
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£21.57
£19.47
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£19.47
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£13.86
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£13.86
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£12.34

MCS Fuel Tank Top Plate Seal – 2004–2010 FXD; 2006–2006 FXDC; 2004–2005…

Only 2 left!

MCS Fuel Tank Top Plate Seal – 2004–2010 FXD; 2006–2006 FXDC; 2004–2005… Viton rubber seal. 6.8mm thick. OEM style fuel tank top plate gasket used ...

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£13.86
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£13.86
£12.34
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£12.34
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£14.94
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£14.94
£13.31
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£13.31

MCS Fuel Pump Plate Seal. Viton Rubber – 2018–2022 Softail 107"/114"; 2007–2022…

Only 1 left!

MCS Fuel Pump Plate Seal. Viton Rubber – 2018–2022 Softail 107"/114"; 2007–2022… 9mm thick. OEM replacement reference 75301-07. Fitment 18-22 Softa...

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£14.94
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£14.94
£13.31
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£13.31
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£136.46
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£136.46
£122.17
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£122.17

MCS Crimp Style Hose Clamp & Plier Set – Various H-D Models

Only 3 left!

MCS Crimp Style Hose Clamp & Plier Set – Various H-D Models Stock replacement crimp style oil & fuel line clamps of the ''Clamp & Click...

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£136.46
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£136.46
£122.17
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£122.17
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£37.16
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£37.16
£29.67
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K&N Precharger Filter Wrap

Only 2 left!

K&N Precharger Filter Wrap Open on one side. fits round filters; id 7.5 inch (191mm) Product Details Brand: K&N Category: INTAKE > AI...

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£37.16
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£37.16
£29.67
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£29.67
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£20.02
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£19.07

MCS Separator, Breather Screen – 1936–1969 Big Twin

Only 3 left!

MCS Separator, Breather Screen – 1936–1969 Big Twin OEM replacement reference 25279-36 (585-36A) Fitment 36-69 Big Twin (NU) Product Details Bran...

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£20.02
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£19.07
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£20.02
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MCS Seal Ring, Pinion Shaft – 1940–1953 Big Twin

Only 2 left!

MCS Seal Ring, Pinion Shaft – 1940–1953 Big Twin Seal ring, pinion shaft Fitment 40-53 Big Twin (NU) Product Details Brand: MCS Category: MOTOR ...

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£19.07
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£41.63
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£33.23
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£33.23

K&N Dry-Charger (Rain Sock) – 909617/8 909622/3 Airchargers and Other…

Only 3 left!

K&N Dry-Charger (Rain Sock) – 909617/8 909622/3 Airchargers and Other… Rain protective sock; made from black polyester. This dry-charger is che...

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£33.23
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£111.22
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£111.22
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£95.56

MCS Braided Hose 5/16" (8mm). Stainless Clear

Only 3 left!

MCS Braided Hose 5/16" (8mm). Stainless Clear Braided hose with classic stainless steel. For universal fuel and oil hose applications. Given size i...

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£111.22
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£95.56
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£4.79
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£4.40
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£4.40

Cometic Dipstick Engine Oil – 2013–2017 FXSB; 2006–2017 Dyna…

Out of stock

Cometic Dipstick Engine Oil – 2013–2017 FXSB; 2006–2017 Dyna… OEM replacement reference 11120. Fitment 13-17 (NU) FXSB; 06-17 (NU) Dyna; 07-25 FLT/...

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£4.79
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£29.79
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£26.88
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MCS Delphi Fuel Check Valve Kit, for Dyna – 2004–2017 Dyna

Only 3 left!

MCS Delphi Fuel Check Valve Kit, for Dyna – 2004–2017 Dyna Stock style replacement for Delphi fuel injected bikes. Kit includes internal fuel lines...

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£26.88
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