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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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Tappet Block Gasket, 18634-48-A/B - Part #DS174370 - hogparts-uk.myshopify.com
£12.42 - £12.42
£12.42
£12.42 - £12.42
£12.42

James Gasket Tappet Cover and Pushrod Tube Gasket Kit #18634-48-A/B

In stock

DescriptionTappet Cover GasketsHigh-quality Genuine James gasketsJames Gaskets Rubber-Covered Metal line of gaskets are made from a solid steel she...

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£12.42 - £12.42
£12.42
£12.42 - £12.42
£12.42
£12.39 - £12.39
£12.39
£12.39 - £12.39
£12.39

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

Low stock

Description OEM replacement reference 27586-88. Fitment 90-06 Big Twin; 88-06 XL Sportster. With CV carburetor (NU) Product Details Brand: MCS C...

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£12.39 - £12.39
£12.39
£12.39 - £12.39
£12.39
£44.26 - £44.26
£44.26
£44.26 - £44.26
£44.26

MCS Monster-Show Petcock, Round Body. Left Outlet – 1966–1974 Big Twin; 1957–1974 Sportster…

Low stock

Description Chrome; left outlet; for 1/4" (6.4mm) fuel hose; with filter & reserve; 3/8 NPT threaded. Why not have a custom petcock that looks ...

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£44.26 - £44.26
£44.26
£44.26 - £44.26
£44.26
£82.70 - £82.70
£82.70
£82.70 - £82.70
£82.70

MCS Air Cleaner Breather Kit – 1993–2025 Big Twin in Custom…

Low stock

Description Routes the oily breather vapors; that clog the air cleaner element; away from your air intake. Kit includes 3/8" ID braided steel hose ...

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£82.70 - £82.70
£82.70
£82.70 - £82.70
£82.70
£122.37 - £122.37
£122.37
£122.37 - £122.37
£122.37

MCS 83-91 Kingsize Sportster Gas Tank, 3.1 Gallon – 1983–1991 XL Sportster

Low stock

Description Fuel tank with OEM styling but wider to hold more fuel than the stock peanut tank. Right side 22mm petcock (not included). Compatible w...

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£122.37 - £122.37
£122.37
£122.37 - £122.37
£122.37
£25.38 - £25.38
£25.38
£25.38 - £25.38
£25.38

MCS Oil Pressure Gauge Kit Rocker Box, 0-60 Psi. Chrome – 1971–1984 Big Twin; 1971–1985 XL…

Low stock

Description Kit mounts to the rear rocker cover for easy and quick on the fly oil pressure monitoring. With adapter fitting to mount the gauge dire...

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£25.38 - £25.38
£25.38
£25.38 - £25.38
£25.38
£21.96 - £21.96
£21.96
£21.96 - £21.96
£21.96

MCS Oil Pressure Gauge Kit Rocker Box, 0-60 Psi. Chrome – 1966–1970 Big Twin; 1957–1970 XL…

Low stock

Description Kit mounts to the rear rocker cover for easy and quick on the fly oil pressure monitoring. With adapter fitting to mount the gauge dire...

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£21.96 - £21.96
£21.96
£21.96 - £21.96
£21.96
£80.96 - £80.96
£80.96
£80.96 - £80.96
£80.96

MCS 58-E78 OEM Style Cigar Type Muffler 22" Long Chrome – 58-E78 FL; FLH with 2-1 System; Custom…

In stock

Description Used in past and used in the present for the true classic styling. 58-E78 style Touring muffler; 22" (55.9 cm) long; made from chrome p...

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£80.96 - £80.96
£80.96
£80.96 - £80.96
£80.96
£200.77 - £200.77
£200.77
£200.77 - £200.77
£200.77

MCS Slash Cut Slip-On Muffler Set 18-1/2" Long Chrome – 1980–2003 XL Sportster

Low stock

Description Sportster muffler set; 18-1/2" (47 cm) long; with 1 3/4" (4.4 cm) inlet and 2-3/8" (6 cm) outside diameter. Fits stock head pipes. The ...

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£200.77 - £200.77
£200.77
£200.77 - £200.77
£200.77
£12.16 - £12.16
£12.16
£12.16 - £12.16
£12.16

MCS Spring, Oil Pump Check Valve – 1936–1955 and 1966–1980 Big Twin

Low stock

Description Spring, oil pump check valve Fitment 36-55 and 66-80 Big Twin (NU) Product Details Brand: MCS Category: MOTOR PARTS > OIL PUMP PA...

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£12.16 - £12.16
£12.16
£12.16 - £12.16
£12.16
£114.72 - £114.72
£114.72
£114.72 - £114.72
£114.72

MCS Slip-On Fishtail Exhaust Extension 30" Long Chrome – 1-3/4" Head Pipes

Low stock

Description Slip-on Fishtail straight pipes; 30" (76.2 cm) long; with 1-3/4" (4.4 cm) inlet. The outer diameter of this extension is 1-7/8" (4.8 cm...

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£114.72 - £114.72
£114.72
£114.72 - £114.72
£114.72
Genuine James Retaining Rings For Exhaust Flanges For 84-20 Big Twin, 86-16 XL, 08-12 Chrome Fitment Harley-Davidson
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£3.71
£3.71 - £3.71
£3.71
£3.30
£3.30 - £3.30
£3.30

James Gasket Replacement Retaining Rings - Pair - Chrome for Harley-Davidson Touring, Softail, Sportster & Dyna 1983-2019

In stock

DescriptionReplacement Retaining RingsExhaust pipe retaining ringsSpecificationsProduct Name : KitRiding Style : StreetType : Retaining RingUnits :...

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£3.71
£3.71 - £3.71
£3.71
£3.30
£3.30 - £3.30
£3.30
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S&S Cycle Oil Filter Black Canister Steel
£16.78 - £16.78
£16.78
£16.78 - £16.78
£16.78

S&S Cycle Oil Filter - Each, Canister, Steel - Black for Harley-Davidson Touring, Softail, Dyna & Trike 1999-2026

In stock

DescriptionOil Filter Sturdy steel canister houses the finest filtering media and internal components available Canister is slightly smaller in dia...

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£16.78 - £16.78
£16.78
£16.78 - £16.78
£16.78
Drag Specialties Spin-On Oil Filter Black Late (84 XL)
£6.36 - £6.36
£6.36
£6.36 - £6.36
£6.36

Drag Specialties Spin-on Oil Filter - Late (84 XL), Each - Black for Harley-Davidson Touring, Softail, Sportster & FXR 1983-2022

In stock

DescriptionSpin-On Oil FilterHigh-quality spin-on filters are a dependable replacementSpecifications Type: Spin-On Product Name: Oil Filter Base...

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£6.36 - £6.36
£6.36
£6.36 - £6.36
£6.36
S&S Cycle Oil Filter Black Canister Steel
£13.59 - £13.59
£13.59
£13.59 - £13.59
£13.59

S&S Cycle Oil Filter - Each, Canister, Steel - Black for Harley-Davidson Touring, Softail, Sportster & Dyna 1984-2022

In stock

DescriptionOil Filter Sturdy steel canister houses the finest filtering media and internal components available Canister is slightly smaller in dia...

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£13.59 - £13.59
£13.59
£13.59 - £13.59
£13.59
Drag Specialties Fuel Petcock Fuel Valve Chrome Gold Silver Die-Cast
£20.97 - £20.97
£20.97
£20.97 - £20.97
£20.97

Drag Specialties Fuel Petcock - Die-Cast, Each - Chrome / Gold

In stock

DescriptionFuel Petcock Includes filter screen, three-position control and high fuel flow 22 mm thread fittings Specifications Valve Outlet Connec...

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£20.97 - £20.97
£20.97
£20.97 - £20.97
£20.97
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£8.22
£8.22 - £8.22
£8.22
£7.13
£7.13 - £7.13
£7.13

MCS Extended Idle Mixture Adjustment Screw Kit. CV Carbs – 1990–2006 Big Twin; 1988–2006 XL…

Low stock

Description Brass. Allows easy adjustable air mixture screw at the tip of your fingers. No screwdriver necessary. Will replace stock air mixture sc...

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£8.22
£8.22 - £8.22
£8.22
£7.13
£7.13 - £7.13
£7.13
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Sold out
£22.58 - £22.58
£22.58
£23.85
£23.85 - £23.85
£23.85

MCS Fuel Line Kit 1/4", Braided – Universal for All Models with 1/4" Hose

Out of stock

Description Universal kit for petcocks that take 1/4" (6mm) hose. Includes 16" (40cm) fuel hose and two Econ-o-fit end caps. Fitment Universal for ...

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£22.58 - £22.58
£22.58
£23.85
£23.85 - £23.85
£23.85
Sold out
Save 8% Save %
£5.78
£5.78 - £5.78
£5.78
£5.34
£5.34 - £5.34
£5.34

CV Performance Main Jet CV Carb .185 – 1989–2006 Big Twin; 1988–2006 XL…

Low stock

Description CVP, main jet cv carb .185 Fitment 89-06 Big Twin; 88-06 XL Sportster (NU) with CV carburetor Product Details Brand: CV Performance ...

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£5.78
£5.78 - £5.78
£5.78
£5.34
£5.34 - £5.34
£5.34
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Save 1% Save %
£25.26
£25.26 - £25.26
£25.26
£25.01
£25.01 - £25.01
£25.01

James Gaskets Oil Seal Inner Primary Cover – L1984–1986 4-Speed Big Twin; L1984–2025…

Low stock

Description Double lip. Rubber OD. Fits back side inner primary; seals mainshaft support bearing. OEM replacement reference 12052; 12052A. Fitment ...

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£25.26
£25.26 - £25.26
£25.26
£25.01
£25.01 - £25.01
£25.01
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Save 8% Save %
£76.72
£76.72 - £76.72
£76.72
£70.23
£70.23 - £70.23
£70.23

Standard Manifold Air Pressure (Map) Sensor – 2001–2006 Softail Carburetor; 2001–2016…

In stock

Description Used on intake manifold. Includes seal. OEM replacement reference 32316-99. Note: See 510717 James / 561325 Cometic for replacement sea...

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£76.72
£76.72 - £76.72
£76.72
£70.23
£70.23 - £70.23
£70.23
Save 8% Save %
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£34.01
£34.01 - £34.01
£34.01
£31.43
£31.43 - £31.43
£31.43

MCS Vacuum Piston, Keihin CV Carburetor – 1990–2006 Big Twin; 1988–2006 XL…

Low stock

Description Direct OEM style replacement. OEM replacement reference 27585-88. Fitment 90-06 Big Twin; 88-06 XL Sportster. With 40mm CV carburetor (...

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£34.01
£34.01 - £34.01
£34.01
£31.43
£31.43 - £31.43
£31.43
Save 8% Save %
£26.90 - £26.90
£26.90
£28.56
£28.56 - £28.56
£28.56

MCS Petcock, Late OEM Style, Left Outlet – 1975–2006 Big Twin; XL Sportster…

In stock

Description Chrome; left outlet; 1/4" (6.35mm) fuel hose; with filter & reserve; 22mm thread with nut Fitment 75-06 Big Twin; XL Sportster (NU)...

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£26.90 - £26.90
£26.90
£28.56
£28.56 - £28.56
£28.56
£40.48 - £40.48
£40.48
£40.97
£40.97 - £40.97
£40.97

James Gaskets Oil Seal Starter Shaft. Double Lip – 1994–2006 Big Twin

Low stock

Description Double lip. Fits backside of inner primary cover where it seals the starter shaft. OEM replacement reference 12066. Fitment 94-06 Big T...

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£40.48 - £40.48
£40.48
£40.97
£40.97 - £40.97
£40.97

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