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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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£146.75
£146.75 - £146.75
£146.75
£139.72
£139.72 - £139.72
£139.72

Kibblewhite KPMI, Beehive Valve Spring Kit. Steel. .610" Lift – 2005–2017 Twin Cam A/B; 2004–2022 XL…

Only 1 left!

Kibblewhite KPMI, Beehive Valve Spring Kit. Steel. .610" Lift – 2005–2017 Twin Cam A/B; 2004–2022 XL… With steel top & lower collars. Reduces t...

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£146.75
£146.75 - £146.75
£146.75
£139.72
£139.72 - £139.72
£139.72
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£146.75
£146.75 - £146.75
£146.75
£139.72
£139.72 - £139.72
£139.72

Kibblewhite KPMI, Beehive Valve Spring Kit. Steel. .610" Lift – 1984–2004 Big Twin; 1986–2003 XL…

Only 2 left!

Kibblewhite KPMI, Beehive Valve Spring Kit. Steel. .610" Lift – 1984–2004 Big Twin; 1986–2003 XL… With steel top & lower collars. Reduces total...

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£146.75
£146.75 - £146.75
£146.75
£139.72
£139.72 - £139.72
£139.72
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£164.52
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£164.52
£156.64
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£156.64

Kibblewhite KPMI, Beehive Valve Spring Kit. Steel. .660" Lift – 1984–2004 Big Twin; 1986–2003 XL…

Only 2 left!

Kibblewhite KPMI, Beehive Valve Spring Kit. Steel. .660" Lift – 1984–2004 Big Twin; 1986–2003 XL… With steel top & lower collars. Reduces total...

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£164.52
£164.52 - £164.52
£164.52
£156.64
£156.64 - £156.64
£156.64
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£156.43
£156.43 - £156.43
£156.43
£148.93
£148.93 - £148.93
£148.93

Kibblewhite KPMI, Valve Spring Kit. .600" Lift. Steel Top Collars – 66-E79 Shovelhead

Only 2 left!

Kibblewhite KPMI, Valve Spring Kit. .600" Lift. Steel Top Collars – 66-E79 Shovelhead Reduces total valve train mass. Great for high lift racing pe...

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£156.43
£156.43 - £156.43
£156.43
£148.93
£148.93 - £148.93
£148.93
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£142.01
£142.01 - £142.01
£142.01
£135.21
£135.21 - £135.21
£135.21

Kibblewhite KPMI, Valve Spring Kit. .415" Lift. Steel Top Collars – 66-E79 Shovelhead

Only 2 left!

Kibblewhite KPMI, Valve Spring Kit. .415" Lift. Steel Top Collars – 66-E79 Shovelhead Reduces total valve train mass. Great for OEM rebuilds with s...

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£142.01
£142.01 - £142.01
£142.01
£135.21
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£135.21
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£137.16
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£137.16
£130.58
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£130.58

Kibblewhite KPMI, Valve Spring Kit. .400" Lift. Steel Top Collars – 57-E83 XL Sportster

Only 2 left!

Kibblewhite KPMI, Valve Spring Kit. .400" Lift. Steel Top Collars – 57-E83 XL Sportster Reduces total valve train mass. Great for OEM rebuilds with...

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£137.16
£137.16 - £137.16
£137.16
£130.58
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£130.58
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£142.01
£142.01 - £142.01
£142.01
£135.21
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£135.21

Kibblewhite KPMI, Valve Spring Kit. .415" Lift. Steel Top Collars – 1948–1965 Panhead

Only 3 left!

Kibblewhite KPMI, Valve Spring Kit. .415" Lift. Steel Top Collars – 1948–1965 Panhead Great for OEM rebuilds with stock specifications. This is a s...

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£142.01
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£142.01
£135.21
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£135.21
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£205.09
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£205.09
£195.26
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£195.26

Kibblewhite KPMI, Cylinder Stud Set – L1985–1999 Evo Big Twin

Only 2 left!

Kibblewhite KPMI, Cylinder Stud Set – L1985–1999 Evo Big Twin - STD length replacement High Performance cylinder studs - Made from Nickel Chrome Mo...

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£205.09
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£205.09
£195.26
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£195.26
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£13.68
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£13.68
£12.59
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£12.59

Kibblewhite KPMI, Int/Exh. Valve Guide Seal Kit. PTFE – 1984–1999 Evo Big Twin; 1999–2004 Twin…

Only 2 left!

Kibblewhite KPMI, Int/Exh. Valve Guide Seal Kit. PTFE – 1984–1999 Evo Big Twin; 1999–2004 Twin… Manufactured with PTFE lining. Kibblewhite Precisio...

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£13.68
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£13.68
£12.59
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£12.59
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£8.21
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£8.21
£7.55
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£7.55

Kibblewhite KPMI, Int/Exh. Valve Guide Seal Kit. Viton – 1984–1999 Evo Big Twin; 1999–2004 Twin…

Only 3 left!

Kibblewhite KPMI, Int/Exh. Valve Guide Seal Kit. Viton – 1984–1999 Evo Big Twin; 1999–2004 Twin… Viton heat resistant rubber. Kibblewhite Precision...

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£8.21
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£8.21
£7.55
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£7.55
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£20.25
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£20.25
£18.64
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£18.64

Kibblewhite KPMI, Valve Key Set. For OEM Top Collars – 1984–2004 Big Twin; 1986–2003 XL…

Only 3 left!

Kibblewhite KPMI, Valve Key Set. For OEM Top Collars – 1984–2004 Big Twin; 1986–2003 XL… Fits OEM & KPMI 7° angled top collars. Includes 4 pair...

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£20.25
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£20.25
£18.64
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£18.64
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£249.92
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£249.92
£237.95
£237.95 - £237.95
£237.95

Kibblewhite KPMI, Valve Spring Kit. .655" Lift. Steel Top Collars – 1984–1999 Evo Big Twin; 1999–2004 Twin…

Only 2 left!

Kibblewhite KPMI, Valve Spring Kit. .655" Lift. Steel Top Collars – 1984–1999 Evo Big Twin; 1999–2004 Twin… High lift high pressure spring kit. Red...

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£249.92
£249.92 - £249.92
£249.92
£237.95
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£237.95
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£161.95
£161.95 - £161.95
£161.95
£154.19
£154.19 - £154.19
£154.19

Kibblewhite KPMI, Valve Spring Kit. .600" Lift. Steel Top Collars – 1984–1999 Evo Big Twin; 1999–2004 Twin…

Out of stock

Kibblewhite KPMI, Valve Spring Kit. .600" Lift. Steel Top Collars – 1984–1999 Evo Big Twin; 1999–2004 Twin… Reduces total valve train mass. Great f...

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£161.95
£161.95 - £161.95
£161.95
£154.19
£154.19 - £154.19
£154.19
Sold out
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£161.54
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£161.54
£153.80
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£153.80

Kibblewhite KPMI, Valve Spring Kit. .600" Lift. Aluminum Top Collars – L1979–1984 Shovelhead

Only 2 left!

Kibblewhite KPMI, Valve Spring Kit. .600" Lift. Aluminum Top Collars – L1979–1984 Shovelhead Reduces total valve train mass. Great for high lift ra...

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£161.54
£161.54 - £161.54
£161.54
£153.80
£153.80 - £153.80
£153.80
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£36.96
£36.96 - £36.96
£36.96
£34.71
£34.71 - £34.71
£34.71

Kibblewhite KPMI, Valve Key Set. For OEM Top Collars – 1936–1947 Knucklehead; 1948–1965…

Only 3 left!

Kibblewhite KPMI, Valve Key Set. For OEM Top Collars – 1936–1947 Knucklehead; 1948–1965… Fits OEM 15° angled top collars. Includes 4 pairs of valve...

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£36.96
£36.96 - £36.96
£36.96
£34.71
£34.71 - £34.71
£34.71
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£36.96
£36.96 - £36.96
£36.96
£34.71
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£34.71

Kibblewhite KPMI, Valve Key Set. For OEM Top Collars – 1957–1985 XL Sportster; 1937–1948…

Only 3 left!

Kibblewhite KPMI, Valve Key Set. For OEM Top Collars – 1957–1985 XL Sportster; 1937–1948… Fits OEM & KPMI 15° angled top collars and OEM 5/16" ...

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£36.96
£36.96 - £36.96
£36.96
£34.71
£34.71 - £34.71
£34.71
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Sold out
£56.80
£56.80 - £56.80
£56.80
£53.34
£53.34 - £53.34
£53.34

Kibblewhite Kpmi, Sportster Valve Spring Set – 57-E83 XL Sportster

Out of stock

Kibblewhite Kpmi, Sportster Valve Spring Set – 57-E83 XL Sportster Stock replacement; use 524463 top collar & valve key set Fitment 57-E83 XL S...

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£56.80
£56.80 - £56.80
£56.80
£53.34
£53.34 - £53.34
£53.34
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£138.63
£138.63 - £138.63
£138.63
£131.99
£131.99 - £131.99
£131.99

Kibblewhite KPMI, Valve Spring Kit. .415" Lift. Steel Top Collars – 1936–1947 Knucklehead

Only 2 left!

Kibblewhite KPMI, Valve Spring Kit. .415" Lift. Steel Top Collars – 1936–1947 Knucklehead Reduces total valve train mass. Great for OEM rebuilds wi...

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£138.63
£138.63 - £138.63
£138.63
£131.99
£131.99 - £131.99
£131.99
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£36.96
£36.96 - £36.96
£36.96
£34.71
£34.71 - £34.71
£34.71

Kibblewhite KPMI, Valve Key Set. For KPMI 15° Angled Top Collars – 1984–2004 Big Twin; 1983–2003 XL…

Only 3 left!

Kibblewhite KPMI, Valve Key Set. For KPMI 15° Angled Top Collars – 1984–2004 Big Twin; 1983–2003 XL… Specialty item. Fits Kibblewhite Precision Mac...

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£36.96
£36.96 - £36.96
£36.96
£34.71
£34.71 - £34.71
£34.71
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£156.43
£156.43 - £156.43
£156.43
£148.93
£148.93 - £148.93
£148.93

Kibblewhite KPMI, Valve Spring Kit. .460" Lift. Steel Top Collars – 1936–1947 Knucklehead

Only 2 left!

Kibblewhite KPMI, Valve Spring Kit. .460" Lift. Steel Top Collars – 1936–1947 Knucklehead Reduces total valve train mass. Great for racing high lif...

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£156.43
£156.43 - £156.43
£156.43
£148.93
£148.93 - £148.93
£148.93
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£42.53
£42.53 - £42.53
£42.53
£39.94
£39.94 - £39.94
£39.94

Kibblewhite KPMI, Valve Stem Seal Installation Tool. Set – 1948–2004 Big Twin; 1958–2003 XL…

Only 3 left!

Kibblewhite KPMI, Valve Stem Seal Installation Tool. Set – 1948–2004 Big Twin; 1958–2003 XL… Set of 4 valve stem seal drivers. Includes 524089 blac...

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£42.53
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£42.53
£39.94
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£39.94
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£39.43
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£39.43
£36.11
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£36.11

Universal Heat Shield

in stock

Come complete with clamps for mounting

£39.43
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£39.43
£36.11
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£36.11
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£39.43
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£39.43
£36.11
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£36.11

Colony Mousetrap Clutch Lever Rod Bolt Kit. Chrome – 1952–1964 Big Twin

in stock

Colony Mousetrap Clutch Lever Rod Bolt Kit. Chrome – 1952–1964 Big Twin Chrome plated steel. OEM reproduction hardware. For Big Twin models with th...

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£39.43
£39.43 - £39.43
£39.43
£36.11
£36.11 - £36.11
£36.11
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£39.43
£39.43 - £39.43
£39.43
£36.11
£36.11 - £36.11
£36.11

Universal Heat Shield

in stock

Come complete with clamps for mounting

£39.43
£39.43 - £39.43
£39.43
£36.11
£36.11 - £36.11
£36.11
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