Skip to content
Find us Hours of Business Email Us Shipping Cookie policy Returns Terms & Conditions Privacy Policy Refunds

Engine & Performance

Shop engine & performance products.

Filters

Save 1% Save %
£34.02
£34.02 - £34.02
£34.02
£33.55
£33.55 - £33.55
£33.55

James Gaskets Oil Seal Clutch Hub Nut – 1936–1964 OHV Big Twin; 1936–1948 74"…

Only 3 left!

James Gaskets Oil Seal Clutch Hub Nut – 1936–1964 OHV Big Twin; 1936–1948 74"… OEM replacement reference 37337-36 (2461-36) Fitment 36-64 OHV Big T...

View full details
£34.02
£34.02 - £34.02
£34.02
£33.55
£33.55 - £33.55
£33.55
Save 1% Save %
Save 1% Save %
£33.84
£33.84 - £33.84
£33.84
£33.37
£33.37 - £33.37
£33.37

James Gaskets Cylinder Head Gasket Set 3-7/8" Bore. .045" Blue PTFE – 1999–2017 Twin Cam (95"/103")

Only 3 left!

James Gaskets Cylinder Head Gasket Set 3-7/8" Bore. .045" Blue PTFE – 1999–2017 Twin Cam (95"/103") .045" blue PTFE coated head gaskets. Final crus...

View full details
£33.84
£33.84 - £33.84
£33.84
£33.37
£33.37 - £33.37
£33.37
Save 1% Save %
£38.22 - £38.22
£38.22
£38.52
£38.52 - £38.52
£38.52

James Gaskets Oil Seal Starter Shaft – 1989–1993 Big Twin

Only 2 left!

James Gaskets Oil Seal Starter Shaft – 1989–1993 Big Twin Fits backside of inner primary cover where it seals the starter shaft. OEM replacement re...

View full details
£38.22 - £38.22
£38.22
£38.52
£38.52 - £38.52
£38.52
Save 1% Save %
£21.76
£21.76 - £21.76
£21.76
£21.45
£21.45 - £21.45
£21.45

James Gaskets Gasket Starter Cover Housing. .031" Paper – 1982–1983 FL; 1980–1985 FX. With Rear…

Only 3 left!

James Gaskets Gasket Starter Cover Housing. .031" Paper – 1982–1983 FL; 1980–1985 FX. With Rear… .031" fiber reinforced paper. OEM replacement refe...

View full details
£21.76
£21.76 - £21.76
£21.76
£21.45
£21.45 - £21.45
£21.45
Save 1% Save %
£13.17 - £13.17
£13.17
£14.75
£14.75 - £14.75
£14.75

MCS Rocker Arm Shaft. Import – 1984–1999 Evo Big Twin; 1999–2017 Twin…

Only 3 left!

MCS Rocker Arm Shaft. Import – 1984–1999 Evo Big Twin; 1999–2017 Twin… OEM style replacement. Repl. 17611-83. Fitment 84-99 Evo Big Twin; 99-17 Twi...

View full details
£13.17 - £13.17
£13.17
£14.75
£14.75 - £14.75
£14.75
Save 10% Save %
£16.11
£16.11 - £16.11
£16.11
£14.54
£14.54 - £14.54
£14.54

MCS Oil Pump Cover, Chrome – 1968–1991 Big Twin without Chain Oiler

Only 3 left!

MCS Oil Pump Cover, Chrome – 1968–1991 Big Twin without Chain Oiler Not compatible with OEM rear chain oilers. Chrome plated stamped steel oil pump...

View full details
£16.11
£16.11 - £16.11
£16.11
£14.54
£14.54 - £14.54
£14.54
Save 10% Save %
Save 10% Save %
£15.15
£15.15 - £15.15
£15.15
£13.67
£13.67 - £13.67
£13.67

MCS Oil Pump Cover, Chrome – 1968–1991 Big Twin with OEM Chain Oiler

Only 2 left!

MCS Oil Pump Cover, Chrome – 1968–1991 Big Twin with OEM Chain Oiler Compatible with the OEM rear chain oiler system. Chrome plated stamped steel o...

View full details
£15.15
£15.15 - £15.15
£15.15
£13.67
£13.67 - £13.67
£13.67
Save 10% Save %
Save 1% Save %
£271.47
£271.47 - £271.47
£271.47
£267.70
£267.70 - £267.70
£267.70

MCS Connecting Rod Assembly 84-99 B.T – 1984–1999 Evo Big Twin

Only 3 left!

MCS Connecting Rod Assembly 84-99 B.T – 1984–1999 Evo Big Twin Complete kit. Includes crankpin; crankpin nuts; rod rollers and retainers. Wrist pin...

View full details
£271.47
£271.47 - £271.47
£271.47
£267.70
£267.70 - £267.70
£267.70
Save 1% Save %
Save 5% Save %
£28.99
£28.99 - £28.99
£28.99
£27.60
£27.60 - £27.60
£27.60

MCS Bushing, Oil Pump Drive Shaft – 1936–1999 Big Twin

Only 3 left!

MCS Bushing, Oil Pump Drive Shaft – 1936–1999 Big Twin OEM replacement reference 24641-36 Fitment 36-99 Big Twin (Excl. Twin Cam) (NU) Product Deta...

View full details
£28.99
£28.99 - £28.99
£28.99
£27.60
£27.60 - £27.60
£27.60
Save 5% Save %
Save 8% Save %
£29.37
£29.37 - £29.37
£29.37
£27.03
£27.03 - £27.03
£27.03

MCS Exhaust Baffle Re-fill Packing – Universal

Only 3 left!

MCS Exhaust Baffle Re-fill Packing – Universal High silicon oxide fiber re-packing material for too loud mufflers with burned-out baffles. Heat res...

View full details
£29.37
£29.37 - £29.37
£29.37
£27.03
£27.03 - £27.03
£27.03
Save 8% Save %
£15.24 - £15.24
£15.24
£15.96
£15.96 - £15.96
£15.96

MCS Gas Cap, Screw-in – 1983–1995 H-D

Only 3 left!

MCS Gas Cap, Screw-in – 1983–1995 H-D Stainless steel; Vented; right side; right hand thread Fitment 83-95 H-D (NU) (Excl. FLT) Product Details B...

View full details
£15.24 - £15.24
£15.24
£15.96
£15.96 - £15.96
£15.96
Save 15% Save %
£217.53
£217.53 - £217.53
£217.53
£183.91
£183.91 - £183.91
£183.91

MCS Billet Oil Cooler, with Oil Pressure Gauge. Chrome – Many Stock & Custom Applications

Only 2 left!

MCS Billet Oil Cooler, with Oil Pressure Gauge. Chrome – Many Stock & Custom Applications Chrome. With 1 clamp. Billet aluminum oil cooler with...

View full details
£217.53
£217.53 - £217.53
£217.53
£183.91
£183.91 - £183.91
£183.91
Save 15% Save %
Save 17% Save %
£273.37
£273.37 - £273.37
£273.37
£227.63
£227.63 - £227.63
£227.63

MCS Billet Oil Cooler, with Temperature Gauge. Black – Many Stock & Custom Applications

Only 2 left!

MCS Billet Oil Cooler, with Temperature Gauge. Black – Many Stock & Custom Applications Black anodized. With 1 clamp. Billet aluminum oil coole...

View full details
£273.37
£273.37 - £273.37
£273.37
£227.63
£227.63 - £227.63
£227.63
Save 17% Save %
Save 14% Save %
£104.41
£104.41 - £104.41
£104.41
£89.71
£89.71 - £89.71
£89.71

MCS Frame Mounted Oil Cooler, V-Shape – Universal

Only 3 left!

MCS Frame Mounted Oil Cooler, V-Shape – Universal Chrome plated steel. Includes oil hose fittings and a mount bracket with 3/8" mount hole. Note: S...

View full details
£104.41
£104.41 - £104.41
£104.41
£89.71
£89.71 - £89.71
£89.71
Save 14% Save %
Save 11% Save %
£83.76
£83.76 - £83.76
£83.76
£74.60
£74.60 - £74.60
£74.60

Gardner-Westcott Oil Gauge Fitting, 3" Extension Pipe, 1/8" NPT . Chrome – XL Sportster Models

Only 2 left!

Gardner-Westcott Oil Gauge Fitting, 3" Extension Pipe, 1/8" NPT . Chrome – XL Sportster Models 3" long pipe extension with 1/8" NPT male ends. Fitm...

View full details
£83.76
£83.76 - £83.76
£83.76
£74.60
£74.60 - £74.60
£74.60
Save 11% Save %
Save 14% Save %
£51.15
£51.15 - £51.15
£51.15
£44.14
£44.14 - £44.14
£44.14

Gardner-Westcott Oil Gauge Fitting, 1-1/2" Extension Pipe, 1/8" NPT . Chrome – XL Sportster Models

Only 1 left!

Gardner-Westcott Oil Gauge Fitting, 1-1/2" Extension Pipe, 1/8" NPT . Chrome – XL Sportster Models 1-1/2"" long pipe extension with 1/8" NPT male e...

View full details
£51.15
£51.15 - £51.15
£51.15
£44.14
£44.14 - £44.14
£44.14
Save 14% Save %
Save 5% Save %
£6.54
£6.54 - £6.54
£6.54
£6.23
£6.23 - £6.23
£6.23

MCS Oil Fitting Adapter, 90 Degree. Chrome – 1968–1998 Big Twin; 1970–1979 XR750

in stock

MCS Oil Fitting Adapter, 90 Degree. Chrome – 1968–1998 Big Twin; 1970–1979 XR750 90° angle - 1/8" NPT male to 1/8" NPT female. OEM replacement refe...

View full details
£6.54
£6.54 - £6.54
£6.54
£6.23
£6.23 - £6.23
£6.23
Save 5% Save %
Save 7% Save %
£31.86
£31.86 - £31.86
£31.86
£29.58
£29.58 - £29.58
£29.58

MCS Replacement XL 900cc Cast Piston. Std – 1957–1971 XL900

Only 2 left!

MCS Replacement XL 900cc Cast Piston. Std – 1957–1971 XL900 Standard 9:1 compression ratio. Perfect for a stock rebuild. Piston includes the wristp...

View full details
£31.86
£31.86 - £31.86
£31.86
£29.58
£29.58 - £29.58
£29.58
Save 7% Save %
Save 1% Save %
£82.21
£82.21 - £82.21
£82.21
£81.05
£81.05 - £81.05
£81.05

Paughco Weld-in Fuel Pump Plate. 6mm Deep – 2007–2022 XL Sportster

Only 2 left!

Paughco Weld-in Fuel Pump Plate. 6mm Deep – 2007–2022 XL Sportster 6mm deep fuel pump plate. Will enable you to modify your tank to take a 07-22 XL...

View full details
£82.21
£82.21 - £82.21
£82.21
£81.05
£81.05 - £81.05
£81.05
Save 1% Save %
Save 1% Save %
£21.76
£21.76 - £21.76
£21.76
£21.45
£21.45 - £21.45
£21.45

James Gaskets Gasket Starter Cover. .031" Paper – 1982 Classic; 1983–1984 FLH; 1980–1986…

Only 3 left!

James Gaskets Gasket Starter Cover. .031" Paper – 1982 Classic; 1983–1984 FLH; 1980–1986… .031" fiber reinforced paper. For belt drive models only....

View full details
£21.76
£21.76 - £21.76
£21.76
£21.45
£21.45 - £21.45
£21.45
Save 1% Save %
Save 1% Save %
£14.35
£14.35 - £14.35
£14.35
£14.15
£14.15 - £14.15
£14.15

James Gaskets Oil Seal Transmission Mainshaft. Single Lip – 80-E84 FLT/Touring; FXR

Only 2 left!

James Gaskets Oil Seal Transmission Mainshaft. Single Lip – 80-E84 FLT/Touring; FXR Rubber OD. OEM replacement reference 12044A. For 5-speed models...

View full details
£14.35
£14.35 - £14.35
£14.35
£14.15
£14.15 - £14.15
£14.15
Save 1% Save %
£29.56 - £29.56
£29.56
£31.39
£31.39 - £31.39
£31.39

MCS Air Cleaner Adapter Bracket. Chrome – 1988–1990 XL Sportster with OEM CV…

Only 2 left!

MCS Air Cleaner Adapter Bracket. Chrome – 1988–1990 XL Sportster with OEM CV… Chrome plated steel. For stock Keihin CV (Constant Vacuum) carburetor...

View full details
£29.56 - £29.56
£29.56
£31.39
£31.39 - £31.39
£31.39
Save 5% Save %
£23.68
£23.68 - £23.68
£23.68
£22.54
£22.54 - £22.54
£22.54

MCS Oil Pump Drive Shaft – 1968–1969 Big Twin

Only 2 left!

MCS Oil Pump Drive Shaft – 1968–1969 Big Twin USA made Fitment 68-69 Big Twin (NU) Product Details Brand: MCS Category: MOTOR PARTS > OIL PUM...

View full details
£23.68
£23.68 - £23.68
£23.68
£22.54
£22.54 - £22.54
£22.54
Save 5% Save %
Save 8% Save %
£43.74
£43.74 - £43.74
£43.74
£40.26
£40.26 - £40.26
£40.26

MCS Rocker Arm, Rear Exhaust / Front Intake – 1948–1965 Panhead

Only 3 left!

MCS Rocker Arm, Rear Exhaust / Front Intake – 1948–1965 Panhead Replacement OEM style rocker arm only. Repl. 17360-48. Fitment 48-65 Panhead (NU) P...

View full details
£43.74
£43.74 - £43.74
£43.74
£40.26
£40.26 - £40.26
£40.26
Save 8% Save %

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare