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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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£44.35
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Jims Camshaft Bushing, Outer. +.005" OD – 1952–2022 K; XL Sportster: #1;3;4 Cam.…

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Jims Camshaft Bushing, Outer. +.005" OD – 1952–2022 K; XL Sportster: #1;3;4 Cam.… Used in the cam cover. Tech tip: Cam cover bushings are counted f...

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£43.73
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£166.08
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Jims Pinion Shaft Bushing. Std Size – 1955–1957 OHV Big Twin

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Jims Pinion Shaft Bushing. Std Size – 1955–1957 OHV Big Twin Steel. In crankcase. Standard O.D. is 2.0015". Fitment 55-57 OHV Big Twin (NU) Product...

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£181.05
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Jims Pinion Shaft Bushing. +.005" – 1940–1954 OHV Big Twin

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Jims Pinion Shaft Bushing. +.005" – 1940–1954 OHV Big Twin Steel. In crankcase. Standard O.D. is 2.0015". Fitment 40-54 OHV Big Twin (NU) Product D...

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£181.05
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£178.52
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£178.52
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£157.78
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£155.58
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Jims Pinion Shaft Bushing. Std. Size – 1940–1954 OHV Big Twin

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Jims Pinion Shaft Bushing. Std. Size – 1940–1954 OHV Big Twin Steel. In crankcase. 2.0015" O.D. Fitment 40-54 OHV Big Twin (NU) Product Details B...

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£157.78
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£155.58
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£44.35
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£43.73
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£43.73

Jims Camshaft Bushing, Outer. STD – 1952–2022 K; XL Sportster: #1;3;4 Cam.…

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Jims Camshaft Bushing, Outer. STD – 1952–2022 K; XL Sportster: #1;3;4 Cam.… Outer diameter .9405". Used in the cam cover. Tech tip: Cam cover bushi...

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£48.99
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Jims Camshaft Bushing, Inner. STD. 36-57 OHV – 1936–1947 Knucklehead; 1948–1957 Panhead

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Jims Camshaft Bushing, Inner. STD. 36-57 OHV – 1936–1947 Knucklehead; 1948–1957 Panhead 1.0035" outside diameter. Fitment 36-47 Knucklehead; 48-57 ...

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£48.29
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£186.66
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£186.66
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Jims Pinion Shaft Bushing. +.005" – 1957–1976 XL Sportster

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Jims Pinion Shaft Bushing. +.005" – 1957–1976 XL Sportster Steel. In crankcase. Standard O.D. 1.7515". Fitment 57-76 XL Sportster (NU) Product Deta...

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£186.66
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£186.66
£184.06
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£184.06
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£166.08
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£163.76
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Jims Pinion Shaft Bushing. Std. Size – 1957–1976 XL Sportster

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Jims Pinion Shaft Bushing. Std. Size – 1957–1976 XL Sportster Steel. In crankcase. Standard O.D. 1.7515". Fitment 57-76 XL Sportster (NU) Product D...

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£166.08
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£166.08
£163.76
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£46.73
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Jims Camshaft Bushing, Outer. +.005" OD – 1957–1990 XL Sportster; 1937–1973 45"…

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Jims Camshaft Bushing, Outer. +.005" OD – 1957–1990 XL Sportster; 1937–1973 45"… For #2 cam. Outer diameter 1.3780". Used in the cam cover. Oversiz...

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£46.07
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£46.73
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Jims Camshaft Bushing, Outer. STD – 1957–1990 XL Sportster; L1959–1973 45"…

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Jims Camshaft Bushing, Outer. STD – 1957–1990 XL Sportster; L1959–1973 45"… For #2 cam. Outer diameter 1.3775". Used in the cam cover. Tech tip: Ca...

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£46.73
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Jims Pinion Shaft Kit. 73-E81 B.T – 73-E81 Shovelhead

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Jims Pinion Shaft Kit. 73-E81 B.T – 73-E81 Shovelhead End oiling. Same as MCS 518026 JIMS pinion shaft; but complete as kit. This kit includes all ...

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£229.43
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£159.77
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Jims Pinion Shaft. 73-E81 B.T – 73-E81 Shovelhead

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Jims Pinion Shaft. 73-E81 B.T – 73-E81 Shovelhead Fits 73-E81 B.T. models. Use 23985-12 key (MCS 517945) for flywheel side and use 23985-54 key (MC...

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£157.54
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£37.94
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MCS Flexible Exhaust Header Cover. Black – 1948–1969 FL & Customs; 1-3/4" Headers

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MCS Flexible Exhaust Header Cover. Black – 1948–1969 FL & Customs; 1-3/4" Headers Cover; made from magnetic; polished steel. A classic; as used...

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MCS Flywheel Thrust Washer Set, Steel (0.065" Thick) – 1929–1973 45" Flathead

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MCS Flywheel Thrust Washer Set, Steel (0.065" Thick) – 1929–1973 45" Flathead For use with steel retainers; fits between connecting rods and flywhe...

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£22.54
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£42.78
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MCS FLT Header Heat Shield, Lower Right. Black – 1981–1991 FLT/Touring

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MCS FLT Header Heat Shield, Lower Right. Black – 1981–1991 FLT/Touring Stock style replacement right side lower heat shield for the OEM FLT exhaust...

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£42.78
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£39.72
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£24.78
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MCS FL 2-1 Exhaust Header Heatshield. Lower Right, Rear. Custom – Fits Stock 2 in 1 Exhaust Systems on…

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MCS FL 2-1 Exhaust Header Heatshield. Lower Right, Rear. Custom – Fits Stock 2 in 1 Exhaust Systems on… Black custom; extra long replica style repl...

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£23.33 - £23.33
£23.33
£24.78
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£23.68
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MCS Flywheel Thrust Washers, Steel (0.60" Thick) – 1936–1941 61" Knucklehead; 1948–1952 61"…

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MCS Flywheel Thrust Washers, Steel (0.60" Thick) – 1936–1941 61" Knucklehead; 1948–1952 61"… For use with steel retainers; fits between connecting ...

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£23.68
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£23.68
£22.54
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£23.68
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MCS Flywheel Thrust Washers, Steel (0.55" Thick) – 1936–1941 61" Knucklehead; 1948–1952 61"…

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MCS Flywheel Thrust Washers, Steel (0.55" Thick) – 1936–1941 61" Knucklehead; 1948–1952 61"… For use with steel retainers; fits between connecting ...

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£23.68
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£23.68
£22.54
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£21.84
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MCS Flywheel Thrust Washer Set, Steel (.055" Thick) – 1941–1948 74" (1200cc) Knucklehead…

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MCS Flywheel Thrust Washer Set, Steel (.055" Thick) – 1941–1948 74" (1200cc) Knucklehead… For use with steel retainers; fits between connecting rod...

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£21.84
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£20.79
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£20.02
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MCS Flywheel Thrust Washer Set, Steel (0.72" Thick) – 1957–1971 XL Sportster

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MCS Flywheel Thrust Washer Set, Steel (0.72" Thick) – 1957–1971 XL Sportster For use with steel retainers; fits between connecting rods and flywhee...

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£20.02
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MCS Lock Kit, Crank Pin – 54-E81 Big Twin

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MCS Lock Kit, Crank Pin – 54-E81 Big Twin Lock kit, crank pin Fitment 54-E81 Big Twin (NU) Product Details Brand: MCS Category: MOTOR PARTS >...

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£7.22
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£6.88
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£35.87
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£33.30
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MCS FL 2-1 Exhaust Front Header Heatshield Black – Fits Stock 2 in 1 Exhaust Systems on…

Only 3 left!

MCS FL 2-1 Exhaust Front Header Heatshield Black – Fits Stock 2 in 1 Exhaust Systems on… Replica style replacement; 26" (66 cm) long; with clamps i...

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MCS FL 2-1 Exhaust Header Heatshield. Lower Right, Rear – Fits Stock 2 in 1 Exhaust Systems on…

Only 3 left!

MCS FL 2-1 Exhaust Header Heatshield. Lower Right, Rear – Fits Stock 2 in 1 Exhaust Systems on… Black replica style replacement; lower right rear s...

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MCS FL Shovel Horizontal Crossover Heat Shield Black – 1965–1984 4-Speed FL Models

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MCS FL Shovel Horizontal Crossover Heat Shield Black – 1965–1984 4-Speed FL Models Used as replacement horizontal shield on stock rear crossover ex...

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