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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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£24.73 - £24.73
£24.73
£28.50
£28.50 - £28.50
£28.50

Colony Sportster Rocker Box Bolt Kit. Hex, Zinc – 1957–1976 Sportster

Only 2 left!

Colony Sportster Rocker Box Bolt Kit. Hex, Zinc – 1957–1976 Sportster The OEM style replacement with hex head bolts. Complete rocker box mounting k...

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£24.73 - £24.73
£24.73
£28.50
£28.50 - £28.50
£28.50
£12.14 - £12.14
£12.14
£13.14
£13.14 - £13.14
£13.14

Colony Shovel Rocker Box Top Nut Kit. Zinc, OEM Style – 1966–1984 Shovel

Only 3 left!

Colony Shovel Rocker Box Top Nut Kit. Zinc, OEM Style – 1966–1984 Shovel Zinc plated. OEM style reproduction. Includes 18 hex nut and washers. With...

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£12.14 - £12.14
£12.14
£13.14
£13.14 - £13.14
£13.14
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£35.77
£35.77 - £35.77
£35.77
£35.33
£35.33 - £35.33
£35.33

Colony Rocker Shaft Plug & Nut Kit. Slotted. Zinc – 66-E71 Shovelhead; 57-E71 XL Sportster

Only 2 left!

Colony Rocker Shaft Plug & Nut Kit. Slotted. Zinc – 66-E71 Shovelhead; 57-E71 XL Sportster Zinc plated. Slotted. OEM styling except the nuts wh...

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£35.77
£35.77 - £35.77
£35.77
£35.33
£35.33 - £35.33
£35.33
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£6.90 - £6.90
£6.90
£7.47
£7.47 - £7.47
£7.47

Colony Rocker Shaft End Nut Kit. Zinc – 1936–1947 Knucklehead

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Colony Rocker Shaft End Nut Kit. Zinc – 1936–1947 Knucklehead Zinc plated. Left side nut and lockwasher kit. Repl. 7831. Fitment 36-47 Knucklehead ...

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£6.90 - £6.90
£6.90
£7.47
£7.47 - £7.47
£7.47
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£26.28
£26.28 - £26.28
£26.28
£25.72
£25.72 - £25.72
£25.72

Colony Inlet Nipple Repair Kit – 1932–1954 All Big Twin OHV & SV…

Only 2 left!

Colony Inlet Nipple Repair Kit – 1932–1954 All Big Twin OHV & SV… Zinc; for ''screw-in'' style manifold nipples Fitment 32-54 all Big Twin OHV ...

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£26.28
£26.28 - £26.28
£26.28
£25.72
£25.72 - £25.72
£25.72
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£42.57
£42.57 - £42.57
£42.57
£41.67
£41.67 - £41.67
£41.67

Colony O-ring Manifold Conv. Nipple Kit – 1936–1939 61" OHV Big Twin (Knuckle with…

Only 2 left!

Colony O-ring Manifold Conv. Nipple Kit – 1936–1939 61" OHV Big Twin (Knuckle with… Steel screw-in; zinc plated Fitment 36-39 61" OHV Big Twin (NU)...

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£42.57
£42.57 - £42.57
£42.57
£41.67
£41.67 - £41.67
£41.67
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£31.20
£31.20 - £31.20
£31.20
£30.54
£30.54 - £30.54
£30.54

Colony Plumber Style – 1932–1973 45" SV

Only 2 left!

Colony Plumber Style – 1932–1973 45" SV Zinc Fitment 32-73 45" SV (EXCL. 40-46 WLD AND 53-54 SERVI-CAR) Product Details Brand: Colony Category: ...

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£31.20
£31.20 - £31.20
£31.20
£30.54
£30.54 - £30.54
£30.54
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£31.58
£31.58 - £31.58
£31.58
£30.91
£30.91 - £30.91
£30.91

Colony Plumber Style – 1934–1948 74"/80" SV; 1936–1939 61" OHV…

Only 2 left!

Colony Plumber Style – 1934–1948 74"/80" SV; 1936–1939 61" OHV… Zinc Fitment 34-48 74"/80" SV; 36-39 61" OHV; 40-46 45" WLD (NU) Product Details ...

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£31.58
£31.58 - £31.58
£31.58
£30.91
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£30.91
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£50.73
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£50.73
£49.66
£49.66 - £49.66
£49.66

Colony Plumber Style – 1940–1954 OHV 74"/61" Big Twin…

Only 2 left!

Colony Plumber Style – 1940–1954 OHV 74"/61" Big Twin… Zinc plated Fitment 40-54 OHV 74"/61" Big Twin; 53-56 K; KH Product Details Brand: Colony ...

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£50.73
£50.73 - £50.73
£50.73
£49.66
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£49.66
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£5.15 - £5.15
£5.15
£5.57
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£5.57

Colony Cyl Base Lockwashers – 1930–1978 OHV & SV Big Twin; 1957–1986…

Only 2 left!

Colony Cyl Base Lockwashers – 1930–1978 OHV & SV Big Twin; 1957–1986… Zinc; 7/16 Fitment 30-78 OHV & SV Big Twin; 57-86 XL Sportster (NU) P...

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£5.15 - £5.15
£5.15
£5.57
£5.57 - £5.57
£5.57
£13.49 - £13.49
£13.49
£15.54
£15.54 - £15.54
£15.54

Colony Cyl Base Nut Kit – 1957–1985 XL Sportster; 1929–1973 45" SV

Only 2 left!

Colony Cyl Base Nut Kit – 1957–1985 XL Sportster; 1929–1973 45" SV Hex zinc Fitment 57-85 XL Sportster; 29-73 45" SV (NU) Product Details Brand: ...

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£13.49 - £13.49
£13.49
£15.54
£15.54 - £15.54
£15.54
£22.14 - £22.14
£22.14
£25.51
£25.51 - £25.51
£25.51

Colony Cyl Base Nut Kit – 1979–1984 1340CC Big Twin

Only 3 left!

Colony Cyl Base Nut Kit – 1979–1984 1340CC Big Twin Hex flanged; zinc Fitment 79-84 1340CC Big Twin (NU) Product Details Brand: Colony Category:...

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£22.14 - £22.14
£22.14
£25.51
£25.51 - £25.51
£25.51
£15.31 - £15.31
£15.31
£17.64
£17.64 - £17.64
£17.64

Colony Cyl Base Nut Kit – 1930–1978 Big Twin

Only 3 left!

Colony Cyl Base Nut Kit – 1930–1978 Big Twin Zinc; hex Fitment 30-78 Big Twin (NU) Product Details Brand: Colony Category: MOTOR PARTS > CYLI...

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£15.31 - £15.31
£15.31
£17.64
£17.64 - £17.64
£17.64
£6.02 - £6.02
£6.02
£6.51
£6.51 - £6.51
£6.51

Colony Early Style – 1941–1948 SV Big Twin; 1941–1954 45" SV

Only 2 left!

Colony Early Style – 1941–1948 SV Big Twin; 1941–1954 45" SV Zinc; long shoulder nut; 1/4-24 thread Fitment 41-48 SV Big Twin; 41-54 45" SV (NU) Pr...

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£6.02 - £6.02
£6.02
£6.51
£6.51 - £6.51
£6.51
Sold out
£5.57 - £5.57
£5.57
£6.03
£6.03 - £6.03
£6.03

Colony Early Style – 1936–1967 Big Twin OHV

Out of stock

Colony Early Style – 1936–1967 Big Twin OHV Zinc; long shoulder nut; 1/4-24 thread Fitment 36-67 Big Twin OHV (NU) Product Details Brand: Colony ...

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£5.57 - £5.57
£5.57
£6.03
£6.03 - £6.03
£6.03
Sold out
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£40.95
£40.95 - £40.95
£40.95
£40.45
£40.45 - £40.45
£40.45

Colony Oil Pump Mount Kit OEM Style – 1937–1973 45" SV

Only 2 left!

Colony Oil Pump Mount Kit OEM Style – 1937–1973 45" SV Zinc; incl. all studs Fitment 37-73 45" SV (NU) Product Details Brand: Colony Category: M...

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£40.95
£40.95 - £40.95
£40.95
£40.45
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£40.45
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£7.73 - £7.73
£7.73
£8.37
£8.37 - £8.37
£8.37

Colony Oil Pump Mount Kit OEM Style – L1971–1976 XL Sportster

Only 2 left!

Colony Oil Pump Mount Kit OEM Style – L1971–1976 XL Sportster Zinc Fitment L71-76 XL Sportster (NU) Product Details Brand: Colony Category: MOTO...

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£7.73 - £7.73
£7.73
£8.37
£8.37 - £8.37
£8.37
£18.75 - £18.75
£18.75
£21.60
£21.60 - £21.60
£21.60

Colony Oil Pump Mount Kit OEM Style. Zinc – 52-E71 XL Sportster

Only 2 left!

Colony Oil Pump Mount Kit OEM Style. Zinc – 52-E71 XL Sportster Zinc plated. OEM style reproduction. Repl. 24819-52 studs; 7036 lock washers and 76...

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£18.75 - £18.75
£18.75
£21.60
£21.60 - £21.60
£21.60
£21.87 - £21.87
£21.87
£25.20
£25.20 - £25.20
£25.20

Colony Oil Pump Mount Kit OEM Style – 1968–1978 Big Twin

Only 2 left!

Colony Oil Pump Mount Kit OEM Style – 1968–1978 Big Twin Zinc; hex Fitment 68-78 Big Twin (NU) Product Details Brand: Colony Category: MOTOR PAR...

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£21.87 - £21.87
£21.87
£25.20
£25.20 - £25.20
£25.20
Sold out
£29.62
£29.62 - £29.62
£29.62
£29.26
£29.26 - £29.26
£29.26

Colony Oil Pump Mount Kit OEM Style – 1936–1967 Big Twin

Out of stock

Colony Oil Pump Mount Kit OEM Style – 1936–1967 Big Twin Zinc; hex Fitment 36-67 Big Twin (NU) Product Details Brand: Colony Category: MOTOR PAR...

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£29.62
£29.62 - £29.62
£29.62
£29.26
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£29.26
Sold out
Sold out
£6.17 - £6.17
£6.17
£6.67
£6.67 - £6.67
£6.67

Colony Oil Pump Mount Kit, OEM Style – 1937–1967 Big Twin

Out of stock

Colony Oil Pump Mount Kit, OEM Style – 1937–1967 Big Twin Zinc; nut & washers; special 1/4-24 HD thread Fitment 37-67 Big Twin (NU) Product Det...

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£6.17 - £6.17
£6.17
£6.67
£6.67 - £6.67
£6.67
Sold out
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£35.77
£35.77 - £35.77
£35.77
£35.33
£35.33 - £35.33
£35.33

Colony Rocker Shaft Plug & Nut Kit. Buttonhead. Zinc – L1971–1984 Shovelhead; L1971–1985 XL…

Only 2 left!

Colony Rocker Shaft Plug & Nut Kit. Buttonhead. Zinc – L1971–1984 Shovelhead; L1971–1985 XL… Zinc. Buttonhead. OEM styling except the nuts whic...

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£35.77
£35.77 - £35.77
£35.77
£35.33
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£35.33
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£35.57
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£35.57
£34.82
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£34.82

Colony Oil Pan Mount Kit. Acorn – 2006–2017 Dyna

Only 2 left!

Colony Oil Pan Mount Kit. Acorn – 2006–2017 Dyna Kit includes studs with chrome plated acorn nuts. OEM replacement reference 4741A Fitment 06-17 Dy...

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£35.57
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£35.57
£34.82
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£34.82
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£10.74
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£10.74
£9.87
£9.87 - £9.87
£9.87

Colony Oil Hose Cover Mount Kit – 1999–2017 Dyna; 1999–2016 FLT/Touring

Only 2 left!

Colony Oil Hose Cover Mount Kit – 1999–2017 Dyna; 1999–2016 FLT/Touring Kit includes studs with chrome plated acorn nuts. Fitment 99-17 Dyna; 99-16...

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£10.74
£10.74 - £10.74
£10.74
£9.87
£9.87 - £9.87
£9.87
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