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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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£59.32
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£54.30
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£54.30

Jims Feed Gear, Driven. Oil Pump – 1968–1999 Big Twin

Only 2 left!

Jims Feed Gear, Driven. Oil Pump – 1968–1999 Big Twin Jims, feed gear, driven. oil pump Fitment 68-99 Big Twin (NU) (Excl. TC) Product Details Br...

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£59.32
£54.30
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£54.30
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£59.32
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£59.32
£54.30
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£54.30

Jims Idle Oil Pumps Gears – L1962–1999 Big Twin

Out of stock

Jims Idle Oil Pumps Gears – L1962–1999 Big Twin L62-67 Big Twin return gear; idle & 68-99 Big Twin feed gear; idle Fitment L62-99 Big Twin (NU)...

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£59.32
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£59.32
£54.30
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£54.30
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£59.32
£59.32 - £59.32
£59.32
£54.30
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£54.30

Jims Return Gear, Driven. Oil Pump – 1968–1999 Big Twin

Only 3 left!

Jims Return Gear, Driven. Oil Pump – 1968–1999 Big Twin Jims, return gear, driven. oil pump Fitment 68-99 Big Twin (NU) Product Details Brand: Ji...

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£59.32
£59.32 - £59.32
£59.32
£54.30
£54.30 - £54.30
£54.30
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Save 8% Save %
£59.32
£59.32 - £59.32
£59.32
£54.30
£54.30 - £54.30
£54.30

Jims Return Gear, Idle. Oil Pump – 1968–1999 Big Twin

Only 3 left!

Jims Return Gear, Idle. Oil Pump – 1968–1999 Big Twin Jims, return gear, idle. oil pump Fitment 68-99 Big Twin (NU) (Excl. TC) Product Details Br...

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£59.32
£59.32 - £59.32
£59.32
£54.30
£54.30 - £54.30
£54.30
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£14.71
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£14.71
£13.10
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£13.10

MCS Keihin Butterfly Carb Rebuild Kit. 83-89 – 1984–1989 Big Twin; 1983–1987 XL…

Only 4 left!

MCS Keihin Butterfly Carb Rebuild Kit. 83-89 – 1984–1989 Big Twin; 1983–1987 XL… Imported carburetor rebuild kit. Complete as shown to rebuild one ...

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£14.71
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£14.71
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£13.10
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£15.21
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£13.72
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MCS Keihin Butterfly Carb Rebuild Kit. 76-E78 – 76-E78 Big Twin; XL Sportster. With OEM…

Only 4 left!

MCS Keihin Butterfly Carb Rebuild Kit. 76-E78 – 76-E78 Big Twin; XL Sportster. With OEM… Imported carburetor rebuild kit. Complete as shown to rebu...

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£15.21
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£15.21
£13.72
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£15.47
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£13.96

MCS Early Bayonet Style Gas Cap Set. Chrome – 1936–1982 H-D

Only 3 left!

MCS Early Bayonet Style Gas Cap Set. Chrome – 1936–1982 H-D Chrome steel. Vented (low) right side and a non-vented (high) left side set. A little s...

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£13.96
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£12.04
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£11.87
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James Gaskets Mainshaft Retainer, Oil Seal & Gasket Kit – 1952–1956 K; KH; 57-E84 XL Sportster

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James Gaskets Mainshaft Retainer, Oil Seal & Gasket Kit – 1952–1956 K; KH; 57-E84 XL Sportster Complete mainshaft retainer kit which includes 3...

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Teardrop Air Cleaner Assembly. Chrome – 1993–1999 Evo Big Twin; 1991–2003 XL…

Only 2 left!

Teardrop Air Cleaner Assembly. Chrome – 1993–1999 Evo Big Twin; 1991–2003 XL… Classic S&S teardrop air cleaner assembly. Complete with filter; ...

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£315.43
£317.85
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Teardrop Air Cleaner Assembly. Chrome – 1984–1992 Big Twin; 1986–1990 XL…

Only 1 left!

Teardrop Air Cleaner Assembly. Chrome – 1984–1992 Big Twin; 1986–1990 XL… Classic S&S teardrop air cleaner assembly. Complete with filter; back...

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£306.73
£309.09
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£316.40
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Teardrop Air Cleaner Assembly. Chrome – 1966–1984 Big Twin; 1957–1985 XL…

Only 1 left!

Teardrop Air Cleaner Assembly. Chrome – 1966–1984 Big Twin; 1957–1985 XL… Classic S&S teardrop air cleaner assembly. Complete with filter; back...

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£316.40
£318.83
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£318.83
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£142.93
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£142.93
£127.05
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£127.05

Jims 48-84 Solid Adjustable Tappet. Standard .731" O.D – 1948–1965 Panhead; 1966–1984 Shovel…

Only 2 left!

Jims 48-84 Solid Adjustable Tappet. Standard .731" O.D – 1948–1965 Panhead; 1966–1984 Shovel… Non-hydraulic tappet. Weight 86 grams each. Must be u...

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£142.93
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£142.93
£127.05
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£127.05
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£140.64
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£140.64
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Jims 57-85 XL Solid Tappet. Standard .731" O.D – 1957–1985 XL Sportster

Out of stock

Jims 57-85 XL Solid Tappet. Standard .731" O.D – 1957–1985 XL Sportster Fits 57-85 Sportster models as a stock replacement tappet. Repl. 18508-52B....

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£140.64
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£140.64
£125.02
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£178.44
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£178.44
£142.44
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£142.44

K&N RK-series Twin Cam Oval Air Cleaner Assy. X-wide – 2001–2015 Softail; 2002–2007…

Only 2 left!

K&N RK-series Twin Cam Oval Air Cleaner Assy. X-wide – 2001–2015 Softail; 2002–2007… Extra-wide. Comes with extra long spacers; but will still ...

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£178.44
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£178.44
£142.44
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£142.44
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£79.42
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MCS Panhead -New Style- Oil Filter Kit. Chrome – Universal

Only 1 left!

MCS Panhead -New Style- Oil Filter Kit. Chrome – Universal The reproduction (OEM style) version of the Panhead style oil filter looks great but cha...

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£79.42
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£79.42
£74.59
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£74.59
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£331.77
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£331.77
£283.39
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Paughco Rocker Covers. OEM Style Aluminum. Polished – 1948–1965 Panhead

Out of stock

Paughco Rocker Covers. OEM Style Aluminum. Polished – 1948–1965 Panhead Polished aluminum. OEM style reproduction; but OEM was steel. Repl. 17500-4...

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£331.77
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£331.77
£283.39
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£283.39
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£8.93
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James Gaskets Speedo Drive Block-off Plug & Bolt Kit – 1996–2006 5-Speed Big Twin

Only 3 left!

James Gaskets Speedo Drive Block-off Plug & Bolt Kit – 1996–2006 5-Speed Big Twin Includes a steel plug; with a full rubber coating. & moun...

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£8.93
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£8.93
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James Gaskets Speedo Drive Block-off Plug & Bolt Kit – 1936–1984 4-Speed Big Twin with…

Only 3 left!

James Gaskets Speedo Drive Block-off Plug & Bolt Kit – 1936–1984 4-Speed Big Twin with… Includes a steel plug; with a full rubber coating. &...

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£8.93
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£8.93
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£13.50
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Mikuni Extender Main Jet

Out of stock

Mikuni Extender Main Jet HSR 48 Product Details Brand: Mikuni Category: INTAKE > JETS > JETS MIKUNI Unit: 1 Product code: 587141

£13.50
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£13.50
£12.02
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£13.50
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Mikuni Extender Main Jet

Only 2 left!

Mikuni Extender Main Jet HSR 42/45 Product Details Brand: Mikuni Category: INTAKE > JETS > JETS MIKUNI Unit: 1 Product code: 587140

£13.50
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£12.02
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£489.96
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£489.96
£483.14
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£483.14

Mikuni HSR42 Carb Kit. With Approval – 1999–2006 Twin Cam & 2007–2014 Custom…

Only 3 left!

Mikuni HSR42 Carb Kit. With Approval – 1999–2006 Twin Cam & 2007–2014 Custom… Includes carburator and adapter for stock air cleaner base plate....

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£483.14
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Mikuni Air Jet 2.0

Only 2 left!

Mikuni Air Jet 2.0 Mikuni, air jet 2.0 Product Details Brand: Mikuni Category: INTAKE > JETS > JETS MIKUNI Unit: 1 Product code: 587133

£5.46
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£5.46
£4.86
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Mikuni Air Jet 1.5

Only 2 left!

Mikuni Air Jet 1.5 Mikuni, air jet 1.5 Product Details Brand: Mikuni Category: INTAKE > JETS > JETS MIKUNI Unit: 1 Product code: 587122

£5.46
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£5.46
£4.86
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£18.15
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Mikuni Needle Jet

Only 2 left!

Mikuni Needle Jet Mikuni, needle jet Product Details Brand: Mikuni Category: INTAKE > JETS > JETS MIKUNI Unit: 1 Product code: 587114

£18.15
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