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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.

Filters

Original price £18.88 - Original price £18.88
Original price £18.88
£20.04
£20.04 - £20.04
Current price £20.04

MCS Oil Tank Dipstick with Temperature Gauge. Chrome Black Face – 1984–1999 Softail; 1982–2003 XL…

Low stock

Description Dipstick = 5.5cm below bottom rubber of plug. Scale runs from 10 to 177° Celsius. Just one look at the fill plug and know if your oil i...

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Original price £18.88 - Original price £18.88
Original price £18.88
£20.04
£20.04 - £20.04
Current price £20.04
Original price £9.98 - Original price £9.98
Original price £9.98
£10.45
£10.45 - £10.45
Current price £10.45

MCS Drop-In Oil Filter. Single Stage – 1953–1978 K; XL Sportster; 53-E82 Big…

In stock

Description Fits models with in-tank oil filters. Replaces the complete OEM type filter construction and will improve oil filtration over the stock...

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Original price £9.98 - Original price £9.98
Original price £9.98
£10.45
£10.45 - £10.45
Current price £10.45
Original price £36.65 - Original price £36.65
Original price £36.65
£37.08
£37.08 - £37.08
Current price £37.08

James Gaskets O-Ring Inner Primary Housing to Crankcase – 1984–2006 Softail; FLT/Touring…

Low stock

Description OEM replacement reference 11147; 11147A. Fitment 84-06 Softail; FLT/Touring; 84-94 FXR; 1982 FL Classic; 83-84 FLH80; 91-05 Dyna (NU) P...

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Original price £36.65 - Original price £36.65
Original price £36.65
£37.08
£37.08 - £37.08
Current price £37.08
Original price £54.99
Original price £54.99 - Original price £54.99
Original price £54.99
Current price £51.86
£51.86 - £51.86
Current price £51.86

S&S Manifold Intake Seals. Band Style – L1978–1984 Big Twin; 1979–1985 XL…

Low stock

Description Used between manifold and cylinder head. OEM replacement reference 27062-78. Fitment L78-84 Big Twin; 79-85 XL Sportster (NU) Product D...

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Original price £54.99
Original price £54.99 - Original price £54.99
Original price £54.99
Current price £51.86
£51.86 - £51.86
Current price £51.86
Save 6% Save %
Original price £5.78
Original price £5.78 - Original price £5.78
Original price £5.78
Current price £5.34
£5.34 - £5.34
Current price £5.34

CV Performance Main Jet CV Carb .180 – 1989–2006 Big Twin; 1988–2006 XL…

Out of stock

Description CVP, main jet cv carb .180 Fitment 89-06 Big Twin; 88-06 XL Sportster (NU) with CV carburetor Product Details Brand: CV Performance ...

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Original price £5.78
Original price £5.78 - Original price £5.78
Original price £5.78
Current price £5.34
£5.34 - £5.34
Current price £5.34
Sold out
Original price £25.64 - Original price £25.64
Original price £25.64
£27.23
£27.23 - £27.23
Current price £27.23

MCS Oil Tank Fill Plug, with Dipstick – 2004–2022 XL Sportster; 2008–2012 XR1200

Low stock

Description Chrome. OEM style replacement XL Sportster oil tank dipstick. Fits the right oil tank side cover. Note: See 572194 for matching chrome ...

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Original price £25.64 - Original price £25.64
Original price £25.64
£27.23
£27.23 - £27.23
Current price £27.23
Original price £9.05
Original price £9.05 - Original price £9.05
Original price £9.05
Current price £8.65
£8.65 - £8.65
Current price £8.65

MCS Enrichment Spring, Keihin CV Carburetor – 1990–2006 Big Twin; 1988–2006 XL…

Low stock

Description Used under starter cap on left side of carb body. OEM replacement reference 27315-88A. Fitment 90-06 Big Twin; 88-06 XL Sportster. With...

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Original price £9.05
Original price £9.05 - Original price £9.05
Original price £9.05
Current price £8.65
£8.65 - £8.65
Current price £8.65
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Original price £128.43 - Original price £128.43
Original price
£128.43
£128.43 - £128.43
Current price £128.43

James Gasket Complete Gasket Kit #17026-73

In stock

DescriptionGasket KitTop-quality gaskets, oil seals and O-rings necessary to rebuild an engineAvailable as complete sets or top-end sets onlyMade i...

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Original price £128.43 - Original price £128.43
Original price
£128.43
£128.43 - £128.43
Current price £128.43
Original price £170.25 - Original price £170.25
Original price
£170.25
£170.25 - £170.25
Current price £170.25

James Gasket Complete Gasket Kit #17026-86

In stock

DescriptionComplete Gasket KitTop-quality gaskets, oil seals, and o-rings necessary to rebuild an XL/XG engineMade in the USAMust order head gasket...

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Original price £170.25 - Original price £170.25
Original price
£170.25
£170.25 - £170.25
Current price £170.25
Original price £68.58 - Original price £68.58
Original price
£68.58
£68.58 - £68.58
Current price £68.58

James Gasket Primary Gasket Kit #34901-85-K

In stock

DescriptionPrimary GasketTop quality gaskets, seals and O-rings meet or exceed OEM specificationsPrimary gasket features silicone beadingMade in th...

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Original price £68.58 - Original price £68.58
Original price
£68.58
£68.58 - £68.58
Current price £68.58
Original price £29.43 - Original price £29.43
Original price
£29.43
£29.43 - £29.43
Current price £29.43

James Gasket Replacement Rocker Box Cover Gaskets #17358-84-A

In stock

DescriptionReplacement Rocker Box Cover GasketsTop quality Genuine James gasketsMade in the USAThese are the preferred style of gaskets.Specificati...

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Original price £29.43 - Original price £29.43
Original price
£29.43
£29.43 - £29.43
Current price £29.43
Original price £27.35 - Original price £27.35
Original price
£27.35
£27.35 - £27.35
Current price £27.35

James Gasket Cylinder Base Gaskets #16774-86

In stock

DescriptionCylinder Base GasketsTop-quality Genuine James gasketsMade in the USAThese are the preferred style of gaskets.SpecificationsType : Cylin...

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Original price £27.35 - Original price £27.35
Original price
£27.35
£27.35 - £27.35
Current price £27.35
Original price £18.24 - Original price £18.24
Original price
£18.24
£18.24 - £18.24
Current price £18.24

James Gasket Carburettor-to-Intake Manifold Seal Kit #27002-00

In stock

DescriptionCarburetor-to-Intake Manifold Seal KitKit contains carb-to-intake seal and two intake-to-cylinder head sealsSpecificationsApplication : ...

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Original price £18.24 - Original price £18.24
Original price
£18.24
£18.24 - £18.24
Current price £18.24
Original price £50.71 - Original price £50.71
Original price
£50.71
£50.71 - £50.71
Current price £50.71

James Gasket Rocker Box Gasket Kit #17038-90

In stock

DescriptionRocker Box Gasket KitMade in the U.S.A.SpecificationsUnits : KitProduct Name : Gasket KitMaterial : RubberType : Rocker BoxRiding Style ...

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Original price £50.71 - Original price £50.71
Original price
£50.71
£50.71 - £50.71
Current price £50.71
Original price £241.45 - Original price £241.45
Original price
£241.45
£241.45 - £241.45
Current price £241.45

Andrews EV27 Cam - Each, Gear for Harley-Davidson Touring, Softail, Dyna & FXR 1983-2000

In stock

DescriptionEV27 Cam Capable of 6000+ rpm with stock springs and no valve float Bolt-in street cam with fast open and close ramps Uses stock springs...

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Original price £241.45 - Original price £241.45
Original price
£241.45
£241.45 - £241.45
Current price £241.45
Original price £63.25 - Original price £63.25
Original price
£63.25
£63.25 - £63.25
Current price £63.25

Kuryakyn Scorpionâ„¢ Spark Plug/Head Bolt Covers #8323

Low stock

DescriptionScorpion™ Spark Plug Head Bolt CoversCovers add a classy touch to any motorHeld in position with setscrews to prevent noisy rattlingSpar...

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Original price £63.25 - Original price £63.25
Original price
£63.25
£63.25 - £63.25
Current price £63.25
Original price £247.84 - Original price £247.84
Original price
£247.84
£247.84 - £247.84
Current price £247.84

Kuryakyn Hyperchargerâ„¢ Air Cleaner #9992

Out of stock

DescriptionHypercharger™ Air CleanerOutstanding performance on stock or mildly modified engines up to 90 horsepowerProvide excellent legroom for co...

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Original price £247.84 - Original price £247.84
Original price
£247.84
£247.84 - £247.84
Current price £247.84
Sold out
Original price £255.96 - Original price £255.96
Original price
£255.96
£255.96 - £255.96
Current price £255.96

Kuryakyn Mach 2â„¢ Zombieâ„¢ Air Cleaner #9459

Out of stock

DescriptionMach 2™ Zombie™ Air CleanerInclude all necessary hardwareSupport over 140hpSold as a kitDetailsDesign : ZombieProduct Name : Air Cleaner...

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Original price £255.96 - Original price £255.96
Original price
£255.96
£255.96 - £255.96
Current price £255.96
Sold out
Original price £417.05 - Original price £417.05
Original price
£417.05
£417.05 - £417.05
Current price £417.05

Vance & Hines Twin Slash 3" Slip-Ons #48623

Out of stock

DescriptionTwin Slash 3" Slip-OnsDesigned with the signature Vance & Hines twin slash end treatment rotated out 45°Brings out the roar of the S...

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Original price £417.05 - Original price £417.05
Original price
£417.05
£417.05 - £417.05
Current price £417.05
Sold out
Original price £9.19 - Original price £9.19
Original price
£9.19
£9.19 - £9.19
Current price £9.19

James Gasket Ball/Check Valve #8866

In stock

DescriptionCheck Valve Ball Bearing Oil PumpReplacement oil pump check valve ballSpecificationsUnits : 10 PackProduct Name : BallType : Check Valve...

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Original price £9.19 - Original price £9.19
Original price
£9.19
£9.19 - £9.19
Current price £9.19
Original price £226.89 - Original price £226.89
Original price
£226.89
£226.89 - £226.89
Current price £226.89

Vance & Hines Straightshots Slip-On Muffler #16821

Out of stock

DescriptionStraightshots Slip-On MufflerStraightshots Slip-ons offer the same great look and sound riders have grown to love from Vance & Hines...

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Original price £226.89 - Original price £226.89
Original price
£226.89
£226.89 - £226.89
Current price £226.89
Sold out
Original price £446.28 - Original price £446.28
Original price
£446.28
£446.28 - £446.28
Current price £446.28

Vance & Hines Mini Grenades 2-into-2 Exhaust System - Part #18002334

Out of stock

Mild steel construction with chrome plated or black ceramic finish and matching race-inspired billet end capsFeature a muscular, compact stance wit...

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Original price £446.28 - Original price £446.28
Original price
£446.28
£446.28 - £446.28
Current price £446.28
Sold out
Original price £921.53 - Original price £921.53
Original price
£921.53
£921.53 - £921.53
Current price £921.53

Vance & Hines Big Radius 2:2 Exhaust System #46071

Out of stock

DescriptionBig Radius 2:2 Exhaust SystemBig 2-1/2" full header and muffler heat shield system is virtually blue-proofRemovable baffles and mounting...

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Original price £921.53 - Original price £921.53
Original price
£921.53
£921.53 - £921.53
Current price £921.53
Sold out
Original price £858.05 - Original price £858.05
Original price
£858.05
£858.05 - £858.05
Current price £858.05

Vance & Hines Big Shots Dyna Exhaust #47938

Out of stock

DescriptionBig Shots Dyna ExhaustFeature the revolutionary Power Chamber™ design; a unique cross-over system that increases horsepower and torqueAr...

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Original price £858.05 - Original price £858.05
Original price
£858.05
£858.05 - £858.05
Current price £858.05
Sold out

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