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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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£10.14
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Colony Gas Tank Mount Kit Chrome – 1952–1956 K; KH; 1957–1978 XL Sportster…

Out of stock

Colony Gas Tank Mount Kit Chrome – 1952–1956 K; KH; 1957–1978 XL Sportster… Chrome plated. Incl. 1038 bolts 4072 and 4082; 6320 washers; 7725 flexlo...

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£12.55
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Colony Gas Tank Mount Kit. Zinc – 1979–1981 XLCH; XL Sportster

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Colony Gas Tank Mount Kit. Zinc – 1979–1981 XLCH; XL Sportster Zinc plated. Reproduction of the fuel tank mount kit; including 4723; 4725 bolts; 61...

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£17.47
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Colony Gas Tank Mount Kit Zinc – 1952–1956 K; KH; 1957–1978 XL Sportster…

Only 2 left!

Colony Gas Tank Mount Kit Zinc – 1952–1956 K; KH; 1957–1978 XL Sportster… Zinc plated. Incl. 1038 bolts 4072 and 4082; 6320 washers; 7725 flexloc nu...

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£17.47
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£17.47
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Colony Gas Tank Mount Kit Black – 1952–1956 K; KH; 1957–1978 XL Sportster…

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Colony Gas Tank Mount Kit Black – 1952–1956 K; KH; 1957–1978 XL Sportster… Black parkerized. Incl. 1038 bolts 4072 and 4082; 6320 washers; 7725 flex...

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£24.28
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Colony 40-49 Fuel Valve Conversion Kit Zinc – 1940–1949 Big Twin

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Colony 40-49 Fuel Valve Conversion Kit Zinc – 1940–1949 Big Twin Zinc plated. Conversion kit with fittings for the stock fuel valve (shut off assem...

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Colony 50-65 Fuel Valve Conversion Kit Zinc – 1950–1965 H-D

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Colony 50-65 Fuel Valve Conversion Kit Zinc – 1950–1965 H-D Zinc plated. Conversion kit with fittings for the stock fuel valve (shut off assembly) ...

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Colony Gas Strainer Flexible Hose Fitting Zinc – 1932–1938 H-D

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Colony Gas Strainer Flexible Hose Fitting Zinc – 1932–1938 H-D Zinc plated. Non-stock. Allows the use of 1/4" slip-on rubber fuel line. Replaces th...

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S&S 4-1/8" Bore 124" Long Block TC Engine. Black/Chrome – 2007–2016 FLT/Touring

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S&S 4-1/8" Bore 124" Long Block TC Engine. Black/Chrome – 2007–2016 FLT/Touring Black/Chrome. Low Compression engine. Low compression is less s...

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Kibblewhite KPMI, Int/Exh. Valve Guide Seal Set. Viton – 2018–2025 Softail; 2017–2025…

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Kibblewhite KPMI, Int/Exh. Valve Guide Seal Set. Viton – 2018–2025 Softail; 2017–2025… Viton heat resistant rubber. Kibblewhite Precision Machining...

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Kibblewhite KPMI, Exhaust Valve Guide. Manganese. Std – 2017–2023 M8

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Kibblewhite KPMI, Exhaust Valve Guide. Manganese. Std – 2017–2023 M8 Manganese bronze. Standard size: 0.4750" O.D. (12.07mm); .2342" I.D. (5.95mm);...

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£29.83
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Kibblewhite KPMI, Exhaust Valve Guide. C630 Bronze. STD – 2017–2023 M8

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Kibblewhite KPMI, Exhaust Valve Guide. C630 Bronze. STD – 2017–2023 M8 C630 bearing bronze. Standard size: 0.4750" O.D. (12.07mm); 0.2342" I.D. (5....

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Kibblewhite KPMI, Intake Valve Guide. Manganese. STD – 2017–2023 M8

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Kibblewhite KPMI, Intake Valve Guide. Manganese. STD – 2017–2023 M8 Maganese bronze. Standard size: 0.4750" O.D. (12.07mm); .2347" I.D. (5.96mm); 1...

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£29.83
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Kibblewhite KPMI, Intake Valve Guide. C630 Bronze. STD – 2017–2023 M8

Only 2 left!

Kibblewhite KPMI, Intake Valve Guide. C630 Bronze. STD – 2017–2023 M8 C630 Bronze. Standard size: 0.4750" O.D. (12.07mm); .2347" I.D. (5.96mm); 1.6...

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£29.83
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£351.68
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Kibblewhite KPMI, .550" High Lift Valve Spring Kit. Steel – 2018–2024 Softail; 2017–2024…

Only 2 left!

Kibblewhite KPMI, .550" High Lift Valve Spring Kit. Steel – 2018–2024 Softail; 2017–2024… Includes steel top collars; chrome siilicone Beehive styl...

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£351.68
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£80.15
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Feuling Cam Driven Gear. 34T – 2007–2017 Softail; 2006–2017 Dyna…

Only 2 left!

Feuling Cam Driven Gear. 34T – 2007–2017 Softail; 2006–2017 Dyna… Machined steel. Cam drive sprocket (installs on the cam); stock replacement rolle...

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Feuling Cam Drive Gear. 17 Tooth – 2007–2025 Softail; 2006–2017 Dyna…

Out of stock

Feuling Cam Drive Gear. 17 Tooth – 2007–2025 Softail; 2006–2017 Dyna… Machined steel. OEM style replacement crankshaft cam drive sprocket. Used wit...

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£92.08
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Feuling Fuel Pressure Regulator – 1995–2001 FLT/Touring Injection Models

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Feuling Fuel Pressure Regulator – 1995–2001 FLT/Touring Injection Models Replacement fuel pressure regulator for fuel injected models. Fitment 95-0...

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Feuling 5.3 Grams/S Fuel Injector. High Flow – 2006–2015 Softail; 2006–2017 Dyna…

Only 2 left!

Feuling 5.3 Grams/S Fuel Injector. High Flow – 2006–2015 Softail; 2006–2017 Dyna… 5.3 grams/s High Flow fuel injector. EV-6 plug in. Injector provi...

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£112.13
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£113.20
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£113.20
£111.61
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£111.61

Feuling 8.2+ Grams/S Fuel Injector. High Flow – 2001–2005 Softail; 2016–2017 Softail…

Only 2 left!

Feuling 8.2+ Grams/S Fuel Injector. High Flow – 2001–2005 Softail; 2016–2017 Softail… 8.2 grams/s High Flow fuel injector. EV-1 plug in. OEM stock ...

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£113.20
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Feuling 5.3 Grams/S Fuel Injector. High Flow – 2001–2005 Softail; 2016–2017 Softail…

Out of stock

Feuling 5.3 Grams/S Fuel Injector. High Flow – 2001–2005 Softail; 2016–2017 Softail… 5.3 grams/s fuel injector (Feuling flow test showed 4.9 grams/...

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£113.20
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£113.20
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Feuling 6.2 Grams/S Fuel Injector. High Flow – 2006–2015 Softail; 2006–2017 Dyna…

Out of stock

Feuling 6.2 Grams/S Fuel Injector. High Flow – 2006–2015 Softail; 2006–2017 Dyna… 6.2 grams/s High Flow fuel injector. EV-6 plug-in. For modified e...

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£113.20
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£113.20
£111.61
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£113.20
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Feuling 5.7+ Grams/S Fuel Injector. High Flow – 2001–2005 Softail; 2016–2017 Softail…

Out of stock

Feuling 5.7+ Grams/S Fuel Injector. High Flow – 2001–2005 Softail; 2016–2017 Softail… 5.7+ grams/s fuel injector. EV-1 plug in. High flow injector ...

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£113.20
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£113.20
£111.61
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£113.20
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Feuling 4.9 Grams/S Fuel Injector. High Flow – 2006–2015 Softail; 2006–2017 Dyna…

Only 2 left!

Feuling 4.9 Grams/S Fuel Injector. High Flow – 2006–2015 Softail; 2006–2017 Dyna… 4.9 grams/s fuel injector. EV-6 Plug in. Will not fit e-throttle....

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£113.20
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£178.53
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Feuling 6.2 Grams/S Fuel Injector. High Flow – 2001–2005 Softail; 2016–2017 Softail…

Only 2 left!

Feuling 6.2 Grams/S Fuel Injector. High Flow – 2001–2005 Softail; 2016–2017 Softail… 6.2 grams/s Fuel injector high flow yellow band; 549cc/min at ...

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