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

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.

Filters

Save 1% Save %
£14.88
£14.88 - £14.88
£14.88
£14.68
£14.68 - £14.68
£14.68

James Gaskets Gasket Taillight to Fender – 1973–1999 H-D

Only 1 left!

James Gaskets Gasket Taillight to Fender – 1973–1999 H-D .055" paper. OEM replacement reference 68123-73. Fitment 73-99 H-D (NU) Product Details ...

View full details
£14.88
£14.88 - £14.88
£14.88
£14.68
£14.68 - £14.68
£14.68
Save 1% Save %
Save 1% Save %
£11.77
£11.77 - £11.77
£11.77
£11.61
£11.61 - £11.61
£11.61

James Gaskets Gasket Set 55-72 Style Taillight – 1955–1972 H-D

Only 3 left!

James Gaskets Gasket Set 55-72 Style Taillight – 1955–1972 H-D 3-piece gasket set. Includes: - Gasket taillight lens to taillight; ref. 68122-55- G...

View full details
£11.77
£11.77 - £11.77
£11.77
£11.61
£11.61 - £11.61
£11.61
Save 1% Save %
Save 1% Save %
£33.94
£33.94 - £33.94
£33.94
£33.46
£33.46 - £33.46
£33.46

James Gaskets Gasket 55-72 Taillight to Fender – 1955–1972 H-D

Only 2 left!

James Gaskets Gasket 55-72 Taillight to Fender – 1955–1972 H-D Durable weather resistant foam rubber material. OEM replacement reference 68122-55. ...

View full details
£33.94
£33.94 - £33.94
£33.94
£33.46
£33.46 - £33.46
£33.46
Save 1% Save %
£50.29 - £50.29
£50.29
£50.68
£50.68 - £50.68
£50.68

James Gaskets Gasket Derby Cover. .031" Paper – 2006–2017 Dyna; 2007–2018 Softail…

Only 3 left!

James Gaskets Gasket Derby Cover. .031" Paper – 2006–2017 Dyna; 2007–2018 Softail… .031" fiber reinforced paper with a dual silicone bead. OEM repl...

View full details
£50.29 - £50.29
£50.29
£50.68
£50.68 - £50.68
£50.68
Save 1% Save %
£22.41
£22.41 - £22.41
£22.41
£22.10
£22.10 - £22.10
£22.10

James Gaskets O-ring Turn Signal Mount – 1971–1973 FX (Front); 1963–1985 FL; FLH…

Only 2 left!

James Gaskets O-ring Turn Signal Mount – 1971–1973 FX (Front); 1963–1985 FL; FLH… Used between the turn signal housing and the turn signal bracket....

View full details
£22.41
£22.41 - £22.41
£22.41
£22.10
£22.10 - £22.10
£22.10
Save 1% Save %
Save 1% Save %
£15.71
£15.71 - £15.71
£15.71
£15.49
£15.49 - £15.49
£15.49

James Gaskets Swingarm/Wheel Seal. Rubber OD – WHEEL FR&RR: 1984–1999 Big Twin; XL…

Only 3 left!

James Gaskets Swingarm/Wheel Seal. Rubber OD – WHEEL FR&RR: 1984–1999 Big Twin; XL… 250" wide. Double lip. OEM replacement reference 47519-83A ...

View full details
£15.71
£15.71 - £15.71
£15.71
£15.49
£15.49 - £15.49
£15.49
Save 1% Save %
Save 1% Save %
£20.92
£20.92 - £20.92
£20.92
£20.63
£20.63 - £20.63
£20.63

James Gaskets James O-ring, Turn Signal Lens – 1987–2023 Various Softail. FXR; Dyna…

Only 2 left!

James Gaskets James O-ring, Turn Signal Lens – 1987–2023 Various Softail. FXR; Dyna… Replacement o-rings for turn signal lenses that are installed ...

View full details
£20.92
£20.92 - £20.92
£20.92
£20.63
£20.63 - £20.63
£20.63
Save 1% Save %
Save 1% Save %
£15.53
£15.53 - £15.53
£15.53
£15.31
£15.31 - £15.31
£15.31

James Gaskets Gasket Taillight to Lens – 1954–1955 KH

Only 2 left!

James Gaskets Gasket Taillight to Lens – 1954–1955 KH Cork. OEM replacement reference 68126-36. Fitment 54-55 KH (NU) Product Details Brand: Jame...

View full details
£15.53
£15.53 - £15.53
£15.53
£15.31
£15.31 - £15.31
£15.31
Save 1% Save %
Save 1% Save %
£33.96
£33.96 - £33.96
£33.96
£33.49
£33.49 - £33.49
£33.49

James Gaskets Gasket 55-72 Taillight to License Plate Lens – 1955–1972 H-D

Only 2 left!

James Gaskets Gasket 55-72 Taillight to License Plate Lens – 1955–1972 H-D Used between taillight body and license plate light lens. OEM replacemen...

View full details
£33.96
£33.96 - £33.96
£33.96
£33.49
£33.49 - £33.49
£33.49
Save 1% Save %
Save 1% Save %
£12.04
£12.04 - £12.04
£12.04
£11.87
£11.87 - £11.87
£11.87

James Gaskets Copper Washer Oil Filter Kit – 1955–1964 Big Twin

Only 2 left!

James Gaskets Copper Washer Oil Filter Kit – 1955–1964 Big Twin Used between the oil filter element housing shell and mounting nut. OEM replacement...

View full details
£12.04
£12.04 - £12.04
£12.04
£11.87
£11.87 - £11.87
£11.87
Save 1% Save %
£43.84 - £43.84
£43.84
£44.18
£44.18 - £44.18
£44.18

James Gaskets Gasket Transmission Sump Plate. Paper – 74-Up XR750 Models

Only 2 left!

James Gaskets Gasket Transmission Sump Plate. Paper – 74-Up XR750 Models .031" fiber reinforced paper. OEM replacement reference 24821-74R. Fitment...

View full details
£43.84 - £43.84
£43.84
£44.18
£44.18 - £44.18
£44.18
Save 5% Save %
£4.38
£4.38 - £4.38
£4.38
£4.17
£4.17 - £4.17
£4.17

James Gaskets 1/4 Inch Steel Ball – 1955–1964 Big Twin

Only 2 left!

James Gaskets 1/4 Inch Steel Ball – 1955–1964 Big Twin 1 used in oil filter pressure valve. OEM replacement reference 8858 Fitment 55-64 Big Twin (...

View full details
£4.38
£4.38 - £4.38
£4.38
£4.17
£4.17 - £4.17
£4.17
Save 5% Save %
Save 5% Save %
£9.43
£9.43 - £9.43
£9.43
£8.97
£8.97 - £8.97
£8.97

James Gaskets Gasket Primary Shifter Hole – 2018–2025 Softail; 2006–2017 Dyna. Mid…

Only 3 left!

James Gaskets Gasket Primary Shifter Hole – 2018–2025 Softail; 2006–2017 Dyna. Mid… 1 used. Small round washer type gasket. Fits inside of inner pr...

View full details
£9.43
£9.43 - £9.43
£9.43
£8.97
£8.97 - £8.97
£8.97
Save 5% Save %
Save 1% Save %
£18.62
£18.62 - £18.62
£18.62
£18.36
£18.36 - £18.36
£18.36

James Gaskets Seal Kit Panhead Style Oil Filter – 1948–1964 OHV Big Twin & 1948 Flathead…

Only 3 left!

James Gaskets Seal Kit Panhead Style Oil Filter – 1948–1964 OHV Big Twin & 1948 Flathead… Steel base rubber kitUpgraded replacement for 900270 ...

View full details
£18.62
£18.62 - £18.62
£18.62
£18.36
£18.36 - £18.36
£18.36
Save 1% Save %
Save 5% Save %
£6.50
£6.50 - £6.50
£6.50
£6.18
£6.18 - £6.18
£6.18

James Gaskets Gasket Starter Hole Cover. .020" RCM – 1971–1978 FX Models & Other 65-E84…

Only 2 left!

James Gaskets Gasket Starter Hole Cover. .020" RCM – 1971–1978 FX Models & Other 65-E84… .020" thick RCM (Rubber Coated Metal). Gasket for the ...

View full details
£6.50
£6.50 - £6.50
£6.50
£6.18
£6.18 - £6.18
£6.18
Save 5% Save %
Save 5% Save %
£7.25
£7.25 - £7.25
£7.25
£6.90
£6.90 - £6.90
£6.90

James Gaskets Swingarm/Wheel Seal Set. Rubber OD – Wheel FR&RR: 1984–1999 Big Twin; XL…

in stock

James Gaskets Swingarm/Wheel Seal Set. Rubber OD – Wheel FR&RR: 1984–1999 Big Twin; XL… .250" thick. Single lip. Rubber ODSold in sets of 2 to ...

View full details
£7.25
£7.25 - £7.25
£7.25
£6.90
£6.90 - £6.90
£6.90
Save 5% Save %
Save 5% Save %
£7.25
£7.25 - £7.25
£7.25
£6.90
£6.90 - £6.90
£6.90

James Gaskets Swingarm/Wheel Seal Set. Steel OD – Spoke or Cast Wheel Front: 1973–1983 FX…

Only 3 left!

James Gaskets Swingarm/Wheel Seal Set. Steel OD – Spoke or Cast Wheel Front: 1973–1983 FX… Sold in sets of 2 to service one swingarm or one wheel. ...

View full details
£7.25
£7.25 - £7.25
£7.25
£6.90
£6.90 - £6.90
£6.90
Save 5% Save %
Save 5% Save %
£7.25
£7.25 - £7.25
£7.25
£6.90
£6.90 - £6.90
£6.90

James Gaskets Swingarm/Wheel Seal Set. Rubber OD – Laced Wheels RR: 1973–1983 FL; FX; FXR…

Only 2 left!

James Gaskets Swingarm/Wheel Seal Set. Rubber OD – Laced Wheels RR: 1973–1983 FL; FX; FXR… Sold in sets of 2 to service one swingarm or one wheel. ...

View full details
£7.25
£7.25 - £7.25
£7.25
£6.90
£6.90 - £6.90
£6.90
Save 5% Save %
Save 1% Save %
£26.07
£26.07 - £26.07
£26.07
£25.71
£25.71 - £25.71
£25.71

James Gaskets James Oil Seal, Shifter Lever Assembly – 2006–2022 XL Sportster; 2008–2012 XR1200

Only 2 left!

James Gaskets James Oil Seal, Shifter Lever Assembly – 2006–2022 XL Sportster; 2008–2012 XR1200 Used behind the shifter arm of transmission. OEM re...

View full details
£26.07
£26.07 - £26.07
£26.07
£25.71
£25.71 - £25.71
£25.71
Save 1% Save %
Save 1% Save %
£21.13
£21.13 - £21.13
£21.13
£20.83
£20.83 - £20.83
£20.83

James Gaskets Gasket Transmission Bearing Housing. RCM/Silicone – 2007–2024 Softail; 2006–2017 Dyna…

Only 2 left!

James Gaskets Gasket Transmission Bearing Housing. RCM/Silicone – 2007–2024 Softail; 2006–2017 Dyna… RCM (Rubber Coated Metal) with a silicone bead...

View full details
£21.13
£21.13 - £21.13
£21.13
£20.83
£20.83 - £20.83
£20.83
Save 1% Save %
Save 1% Save %
£14.60
£14.60 - £14.60
£14.60
£14.40
£14.40 - £14.40
£14.40

James Gaskets Gasket Transmission Bearing Housing. Foamet – 2007–2024 Softail; 2006–2017 Dyna…

Only 3 left!

James Gaskets Gasket Transmission Bearing Housing. Foamet – 2007–2024 Softail; 2006–2017 Dyna… Foamet (Foam Covered Metal). Used between bearing ho...

View full details
£14.60
£14.60 - £14.60
£14.60
£14.40
£14.40 - £14.40
£14.40
Save 1% Save %
Save 1% Save %
£15.34
£15.34 - £15.34
£15.34
£15.13
£15.13 - £15.13
£15.13

James Gaskets Gasket Transmission to Engine. RCM – 2008–2017 Dyna; 2007–2016 FLT/Touring

Only 2 left!

James Gaskets Gasket Transmission to Engine. RCM – 2008–2017 Dyna; 2007–2016 FLT/Touring RCM (Rubber Coated Metal). Molded rubber with a steel core...

View full details
£15.34
£15.34 - £15.34
£15.34
£15.13
£15.13 - £15.13
£15.13
Save 1% Save %
Save 5% Save %
£10.03
£10.03 - £10.03
£10.03
£9.55
£9.55 - £9.55
£9.55

James Gaskets James Woodruff Key, Transmission Maindrive Gear Spacer – 38-E77 Big Twin

Only 3 left!

James Gaskets James Woodruff Key, Transmission Maindrive Gear Spacer – 38-E77 Big Twin OEM replacement reference 35175-38 (2339-38) Fitment 38-E77 ...

View full details
£10.03
£10.03 - £10.03
£10.03
£9.55
£9.55 - £9.55
£9.55
Save 5% Save %
Save 5% Save %
£9.57
£9.57 - £9.57
£9.57
£9.11
£9.11 - £9.11
£9.11

James Gaskets O-ring Starter to Inner Primary – 2007–2026 Softail; 2006–2017 Dyna…

Only 3 left!

James Gaskets O-ring Starter to Inner Primary – 2007–2026 Softail; 2006–2017 Dyna… Starter motor to inner primary housing. OEM replacement referenc...

View full details
£9.57
£9.57 - £9.57
£9.57
£9.11
£9.11 - £9.11
£9.11
Save 5% 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