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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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£7.14
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MCS Oil Line Fitting, 90 Degree. 1/8"-27 NPT to 3/8". Chrome – Oil Pump: 1977–2022 XL Sportster; Custom…

Only 3 left!

MCS Oil Line Fitting, 90 Degree. 1/8"-27 NPT to 3/8". Chrome – Oil Pump: 1977–2022 XL Sportster; Custom… 1/8"-27 NPT to 3/8" (9.5mm) inside diamete...

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£7.14
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£18.36
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MCS Oil Tank/Clutch Cable Mounting Bracket. Chrome – 65-E79 FL; FX

Only 3 left!

MCS Oil Tank/Clutch Cable Mounting Bracket. Chrome – 65-E79 FL; FX Used to mount both oil tank and to hold the outer clutch cable. Replaces stock i...

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MCS Oil Line Fitting, Straight. 1/4" NPT to 5/16 Hose. Chrome

in stock

MCS Oil Line Fitting, Straight. 1/4" NPT to 5/16 Hose. Chrome 1/4 NPT threaded to 5/16" (7.9mm) inside diameter hose. Product Details Brand: MCS ...

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£5.54
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£7.81
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£6.74
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MCS Fuel & Oil Hose Guide Wire. Chrome – Universal

Only 3 left!

MCS Fuel & Oil Hose Guide Wire. Chrome – Universal Chrome plated steel. Used to help route fuel and oil lines. Length 5.7cm. 1cm I.D. small eye...

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£6.74
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£9.25
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MCS Fuel & Oil Hose Guide Wire. Zinc – Universal

Only 3 left!

MCS Fuel & Oil Hose Guide Wire. Zinc – Universal Zinc plated steel. Used to help route fuel and oil lines. Length 5.7cm. 1cm I.D. small eyelet ...

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Gardner-Westcott Oil Drain Plug, Allen Head. 1/2"-20. Chrome – Oil Tank: 1941–1984 FL; 1971–1984 FX…

Out of stock

Gardner-Westcott Oil Drain Plug, Allen Head. 1/2"-20. Chrome – Oil Tank: 1941–1984 FL; 1971–1984 FX… Allen head (socket head). OEM replacement refe...

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£11.81
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£10.52
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MCS Breather Tube, Crankcase XL – 1954–1978 XLH; XLCH

Only 3 left!

MCS Breather Tube, Crankcase XL – 1954–1978 XLH; XLCH Breather tube, crankcase XL Fitment 54-78 XLH; XLCH (NU) Product Details Brand: MCS Catego...

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MCS Oiler Tee, Rear Chain – 71-E78 FX; 1970–1979 FL

Only 3 left!

MCS Oiler Tee, Rear Chain – 71-E78 FX; 1970–1979 FL 1/8-27 NPT threaded. Zinc plated. OEM replacement reference 63541-70. Fitment 71-E78 FX; 70-79 ...

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MCS Choke Knob, Chrome – ALL DASH MOUNT

Only 4 left!

MCS Choke Knob, Chrome – ALL DASH MOUNT 10-32" threaded; chrome plated aluminum Fitment ALL DASH MOUNT (Excl. 67-70 FL) Product Details Brand: MC...

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£9.14
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£656.82
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Dynatek DynaTune. With 4-Pin Diagnostic Port – 2001–2015 H-D Fits J1850; with 4-Pin…

Only 2 left!

Dynatek DynaTune. With 4-Pin Diagnostic Port – 2001–2015 H-D Fits J1850; with 4-Pin… For J1850 protocol models (4-pin diagnostic port). The DynaTun...

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£656.82
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Paughco Front & Rear Heatshield Set. Chrome – 2000–2017 Softail

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Paughco Front & Rear Heatshield Set. Chrome – 2000–2017 Softail Fits 905218 (chrome) & 905453 (black) Side by Side Upswept Fishtail exhaust...

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£288.00
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£9.46
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MCS Breather Bolt Set – 1991–2022 XL Sportster

Only 1 left!

MCS Breather Bolt Set – 1991–2022 XL Sportster 2 used. Hollow breather bolts; 1/2-13 threaded. Allows connection of heads to breather hose. Note: S...

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MCS Breather Bolt Set – 1999–2007 Twin Cam

Only 3 left!

MCS Breather Bolt Set – 1999–2007 Twin Cam 2 bolts used. Hollow bolts. 3/8-16 threaded. Short type. Allows connection of heads to breather hose. Fi...

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£8.59
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MCS Evolution Breather Kit – 1993–1999 Big Twin; 1991–2022 XL…

Only 2 left!

MCS Evolution Breather Kit – 1993–1999 Big Twin; 1991–2022 XL… Comes with 1/2-13 threaded bolts and accepts stock 3/8" hose. The simple breather so...

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£43.46
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Paughco Muffler P-clamp 2-1/2" Chrome – Universal

Only 3 left!

Paughco Muffler P-clamp 2-1/2" Chrome – Universal Chrome plated steel. 2-1/2" (6.4cm) inside diameter. Offset and with a short mount strip. Fitment...

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Paughco Muffler P-clamp 1-3/4" Chrome – Universal

Only 2 left!

Paughco Muffler P-clamp 1-3/4" Chrome – Universal Chrome plated steel. 1-3/4" (4.4cm) inside diameter. Offset and with a short mount strip. Fitment...

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£43.24
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£58.91
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James Gaskets Upper Rocker Cover Gasket. Rubber – 1992–1999 Evo Big Twin

Only 2 left!

James Gaskets Upper Rocker Cover Gasket. Rubber – 1992–1999 Evo Big Twin Used between rocker covers. OEM replacement reference 17356-92 Fitment 92-...

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£58.91
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James Gaskets Lower Rocker Cover Gasket. Rubber – 1992–1999 Evo Big Twin

Only 3 left!

James Gaskets Lower Rocker Cover Gasket. Rubber – 1992–1999 Evo Big Twin Used between rocker covers. OEM replacement reference 17355-92 Fitment 92-...

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£125.89
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£124.11
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Jims Sprocket Shaft Spacer Kit .336" to .666" Wide – 1955–1964 Big Twin & 1965–1969 Big Twin…

Only 2 left!

Jims Sprocket Shaft Spacer Kit .336" to .666" Wide – 1955–1964 Big Twin & 1965–1969 Big Twin… 8-piece kit. Used to shim-out primary belt pulley...

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£125.89
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£124.11
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MCS 84-E85 Hydraulic Tappet De-activators – 84-E85 Evo Big Twin

Only 2 left!

MCS 84-E85 Hydraulic Tappet De-activators – 84-E85 Evo Big Twin Fits stock early hydraulic tappets in 84-E85 Evo Big Twin models only. This is basi...

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£47.18
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MCS Air Cleaner Breather Bolt & Banjo Kit – 1993–2025 B.T.; 2017–2025 Trikes…

Only 5 left!

MCS Air Cleaner Breather Bolt & Banjo Kit – 1993–2025 B.T.; 2017–2025 Trikes… Enables installation of most custom aftermarket air cleaner assem...

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£43.42
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MCS Banjo Set – 1993–1999 Evo Big Twin

Only 3 left!

MCS Banjo Set – 1993–1999 Evo Big Twin For standard 3/8" rubber hose Fitment 93-99 Evo Big Twin (NU) Product Details Brand: MCS Category: INTAKE...

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£12.34
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MCS Breather Bolt Set – 2008–2017 Twin Cam; 2017–2025 M8

Only 2 left!

MCS Breather Bolt Set – 2008–2017 Twin Cam; 2017–2025 M8 2 bolts used. 3/8-16 threaded. Hollow bolts. Long type. Allows connection of heads to brea...

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MCS Dual Breather Kit, Short Canister – 1993–2024 Big Twin

Only 1 left!

MCS Dual Breather Kit, Short Canister – 1993–2024 Big Twin Chromed aluminum. Fits Evo; Twin Cam and M8 Big Twin models with head vents. Comes with ...

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