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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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£388.88
£388.88 - £388.88
£388.88
£356.13
£356.13 - £356.13
£356.13

Arlen Ness Carbon Fibre Big Sucker Stage 1 Air Cleaner w/Standard Air Filter for Various Various Harley-Davidson Motorcycles (See Fitment List) #18-740

in stock

DescriptionBig Sucker™ Stage I Air Filter KitOne-Piece aluminium backing plate with hidden breather technologyEach hidden breather is O-ringed at t...

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£388.88
£388.88 - £388.88
£388.88
£356.13
£356.13 - £356.13
£356.13
Save 8% Save %
Save 8% Save %
£388.88
£388.88 - £388.88
£388.88
£356.13
£356.13 - £356.13
£356.13

Arlen Ness Black Big Sucker Stage 1 Knuckle Air Filter Kit w/Standard Air Filter & Billet Cover for Various Various Harley-Davidson Motorcycles (See Fitment List) #18-394

in stock

DescriptionBig Sucker™ Stage 1 Air Filter KitEach breather is O-ringed at the heads, passes through the backing plate and exits inside the mouth of...

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£388.88
£388.88 - £388.88
£388.88
£356.13
£356.13 - £356.13
£356.13
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£365.24
£365.24 - £365.24
£365.24
£334.48
£334.48 - £334.48
£334.48

Arlen Ness Chrome Big Sucker Stage 1 Knuckle Air Filter Kit w/Standard Air Filter & Billet Cover for Various Various Harley-Davidson Motorcycles (See Fitment List) #18-393

in stock

DescriptionBig Sucker™ Stage 1 Air Filter KitEach breather is O-ringed at the heads, passes through the backing plate and exits inside the mouth of...

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£365.24
£365.24 - £365.24
£365.24
£334.48
£334.48 - £334.48
£334.48
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Arlen Ness Brushed Stainless Big Sucker Stage 1 Knuckle Air Filter Kit w/Standard Air Filter & Billet Cover for Various Various Harley-Davidson Motorcycles (See Fitment List) Save 8% Save %
£270.07
£270.07 - £270.07
£270.07
£247.33
£247.33 - £247.33
£247.33

Arlen Ness Brushed Stainless Big Sucker Stage 1 Knuckle Air Filter Kit w/Standard Air Filter & Billet Cover for Various Various Harley-Davidson Motorcycles (See Fitment List) #18-344

in stock

DescriptionBig Sucker™ Stage 1 Air Filter KitEach breather is O-ringed at the heads, passes through the backing plate and exits inside the mouth of...

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£270.07
£270.07 - £270.07
£270.07
£247.33
£247.33 - £247.33
£247.33
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Arlen Ness Black Big Sucker Stage 1 Knuckle Air Filter Kit w/Standard Air Filter & Billet Cover for Various Various Harley-Davidson Motorcycles (See Fitment List)
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£334.06
£334.06 - £334.06
£334.06
£305.92
£305.92 - £305.92
£305.92

Arlen Ness Black Big Sucker Stage 1 Knuckle Air Filter Kit w/Standard Air Filter & Billet Cover for Various Various Harley-Davidson Motorcycles (See Fitment List) #18-342

in stock

DescriptionBig Sucker™ Stage 1 Air Filter KitEach breather is O-ringed at the heads, passes through the backing plate and exits inside the mouth of...

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£334.06
£334.06 - £334.06
£334.06
£305.92
£305.92 - £305.92
£305.92
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£526.88
£526.88 - £526.88
£526.88
£482.51
£482.51 - £482.51
£482.51

Arlen Ness Black Anodised 15-Spoke Inverted Series Air Cleaner Kit for Various Various Harley-Davidson Motorcycles (See Fitment List) #18-997

in stock

DescriptionInverted Series Air Cleaner KitForged billet aluminium backing plate features Big Sucker™ hidden breather technology and a radius air in...

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£526.88
£526.88 - £526.88
£526.88
£482.51
£482.51 - £482.51
£482.51
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£575.02
£575.02 - £575.02
£575.02
£526.59
£526.59 - £526.59
£526.59

Arlen Ness Chrome 15-Spoke Inverted Series Air Cleaner Kit for Various Various Harley-Davidson Motorcycles (See Fitment List) #18-996

in stock

DescriptionInverted Series Air Cleaner KitForged billet aluminium backing plate features Big Sucker™ hidden breather technology and a radius air in...

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£575.02
£575.02 - £575.02
£575.02
£526.59
£526.59 - £526.59
£526.59
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£575.02
£575.02 - £575.02
£575.02
£526.59
£526.59 - £526.59
£526.59

Arlen Ness Black Anodised 15-Spoke Inverted Series Air Cleaner Kit for 1991-2022 Harley-Davidson Sportster Motorcycles #18-995

in stock

DescriptionInverted Series Air Cleaner KitForged billet aluminium backing plate features Big Sucker™ hidden breather technology and a radius air in...

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£575.02
£575.02 - £575.02
£575.02
£526.59
£526.59 - £526.59
£526.59
Save 8% Save %
Save 8% Save %
£575.02
£575.02 - £575.02
£575.02
£526.59
£526.59 - £526.59
£526.59

Arlen Ness Chrome 15-Spoke Inverted Series Air Cleaner Kit for 1991-2022 Harley-Davidson Sportster Motorcycles #18-994

Only 3 left!

DescriptionInverted Series Air Cleaner KitForged billet aluminium backing plate features Big Sucker™ hidden breather technology and a radius air in...

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£575.02
£575.02 - £575.02
£575.02
£526.59
£526.59 - £526.59
£526.59
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Save 8% Save %
£526.88
£526.88 - £526.88
£526.88
£482.51
£482.51 - £482.51
£482.51

Arlen Ness Black Inverted Series Drift Air Cleaner Kit for Various Various Harley-Davidson Motorcycles (See Fitment List) #18-987

in stock

DescriptionInverted Series Air Cleaner KitForged billet aluminium backing plate features Big Sucker™ hidden breather technology and a radius air in...

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£526.88
£526.88 - £526.88
£526.88
£482.51
£482.51 - £482.51
£482.51
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Save 8% Save %
£540.05
£540.05 - £540.05
£540.05
£494.57
£494.57 - £494.57
£494.57

Arlen Ness Chrome Inverted Series Drift Air Cleaner Kit for Various Various Harley-Davidson Motorcycles (See Fitment List) #18-986

in stock

DescriptionInverted Series Air Cleaner KitForged billet aluminium backing plate features Big Sucker™ hidden breather technology and a radius air in...

View full details
£540.05
£540.05 - £540.05
£540.05
£494.57
£494.57 - £494.57
£494.57
Save 8% Save %
Save 8% Save %
£526.88
£526.88 - £526.88
£526.88
£482.51
£482.51 - £482.51
£482.51

Arlen Ness Black Inverted Series Drift Air Cleaner Kit for 1991-2022 Harley-Davidson Sportster Motorcycles #18-985

in stock

DescriptionInverted Series Air Cleaner KitForged billet aluminium backing plate features Big Sucker™ hidden breather technology and a radius air in...

View full details
£526.88
£526.88 - £526.88
£526.88
£482.51
£482.51 - £482.51
£482.51
Save 8% Save %
Save 8% Save %
£526.88
£526.88 - £526.88
£526.88
£482.51
£482.51 - £482.51
£482.51

Arlen Ness Black Inverted Series Drift Air Cleaner Kit for Various Various Harley-Davidson Motorcycles (See Fitment List) #18-983

in stock

DescriptionInverted Series Air Cleaner KitForged billet aluminium backing plate features Big Sucker™ hidden breather technology and a radius air in...

View full details
£526.88
£526.88 - £526.88
£526.88
£482.51
£482.51 - £482.51
£482.51
Save 8% Save %
Save 8% Save %
£540.05
£540.05 - £540.05
£540.05
£494.57
£494.57 - £494.57
£494.57

Arlen Ness Chrome Inverted Series Drift Air Cleaner Kit for Various Various Harley-Davidson Motorcycles (See Fitment List) #18-982

in stock

DescriptionInverted Series Air Cleaner KitForged billet aluminium backing plate features Big Sucker™ hidden breather technology and a radius air in...

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£540.05
£540.05 - £540.05
£540.05
£494.57
£494.57 - £494.57
£494.57
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Drag Specialties Connecting Rod Assembly Heavy Duty Steel Set
£261.41 - £261.41
£261.41
£261.41 - £261.41
£261.41

Drag Specialties Connecting Rod Assembly Heavy Duty Steel Set - 2427586A-BX-LB1

in stock

DescriptionConnecting Rod AssemblyHeavy-duty replacements, perfect for stock motorsMeets or exceeds OEM specificationsComes completely fitted and r...

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£261.41 - £261.41
£261.41
£261.41 - £261.41
£261.41
Drag Specialties Lifter Blocks Polished Chrome Aluminium Pair
£144.96 - £144.96
£144.96
£144.96 - £144.96
£144.96

Drag Specialties Lifter Blocks Polished Chrome Aluminium Pair - 26533

in stock

DescriptionLifter BlocksEach pair is precision-machined and comes with a set of chrome-plated socket-head screwsMade from cast aluminium, polished ...

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£144.96 - £144.96
£144.96
£144.96 - £144.96
£144.96
Drag Specialties Hydraulic Lifter Unit
£35.68 - £35.68
£35.68
£35.68 - £35.68
£35.68

Drag Specialties Hydraulic Lifter Unit - 11460

in stock

DescriptionHydraulic Lifter UnitMade in JapanSpecifications Riding Style: Street Style: Hydraulic Product Name: Lifter Units: Each Part Numbers...

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£35.68 - £35.68
£35.68
£35.68 - £35.68
£35.68
Drag Specialties Lifter Blocks Chrome Cast Iron Pair
£125.55 - £125.55
£125.55
£125.55 - £125.55
£125.55

Drag Specialties Lifter Blocks Chrome Cast Iron Pair - 20489

in stock

DescriptionLifter BlocksCome complete with two sets of Allen cap screws (1/4"-24 for 66-E76 and 1/4"-20 for L76-84), completely machined and ready ...

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£125.55 - £125.55
£125.55
£125.55 - £125.55
£125.55
Drag Specialties Lifter Blocks Black Cast Iron Pair
£114.40 - £114.40
£114.40
£114.40 - £114.40
£114.40

Drag Specialties Lifter Blocks Black Cast Iron Pair - 20489BK-BX-LB1

in stock

DescriptionLifter BlocksCome complete with two sets of Allen cap screws (1/4"-24 for 66-E76 and 1/4"-20 for L76-84), completely machined and ready ...

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£114.40 - £114.40
£114.40
£114.40 - £114.40
£114.40
Drag Specialties Replacement Rocker Arms with Bushings Front Exhaust Rear Intake
£52.87 - £52.87
£52.87
£52.87 - £52.87
£52.87

Drag Specialties Replacement Rocker Arms with Bushings Front Exhaust Rear Intake - 25730

in stock

DescriptionReplacement Rocker Arms with BushingsOEM style rocker armsSpecifications Riding Style: Street Product Name: Rocker Arm Mounting Posit...

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£52.87 - £52.87
£52.87
£52.87 - £52.87
£52.87
Drag Specialties Replacement Rocker Arms with Bushings Front Intake Rear Exhaust
£52.87 - £52.87
£52.87
£52.87 - £52.87
£52.87

Drag Specialties Replacement Rocker Arms with Bushings Front Intake Rear Exhaust - 25729

in stock

DescriptionReplacement Rocker Arms with BushingsOEM style rocker armsSpecifications Product Name: Rocker Arm Units: Each Mounting Position: Fron...

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£52.87 - £52.87
£52.87
£52.87 - £52.87
£52.87
Drag Specialties Replacement Rocker Arms with Bushings Front Exhaust Rear Intake
Sold out
£33.56 - £33.56
£33.56
£33.56 - £33.56
£33.56

Drag Specialties Replacement Rocker Arms with Bushings Front Exhaust Rear Intake - 17375-66-BX

Out of stock

DescriptionReplacement Rocker Arms with BushingsOEM style rocker armsSpecifications Application: Exhaust| Intake Units: Each Product Name: Rocke...

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£33.56 - £33.56
£33.56
£33.56 - £33.56
£33.56
Sold out
Drag Specialties Replacement Rocker Arms with Bushings Front Intake Rear Exhaust
Sold out
£33.56 - £33.56
£33.56
£33.56 - £33.56
£33.56

Drag Specialties Replacement Rocker Arms with Bushings Front Intake Rear Exhaust - 17360-66-BX

Out of stock

DescriptionReplacement Rocker Arms with BushingsOEM style rocker armsSpecifications Product Name: Rocker Arm Mounting Position: Front Intake| Rea...

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£33.56 - £33.56
£33.56
£33.56 - £33.56
£33.56
Sold out
Drag Specialties Chrome Pushrod Tube Assembly
£24.29 - £24.29
£24.29
£24.29 - £24.29
£24.29

Drag Specialties Chrome Pushrod Tube Assembly - 72629

in stock

DescriptionChrome Pushrod Tube AssemblyOriginal-style replacement for XL models; includes everything neededEach motor requires four tube assemblies...

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£24.29 - £24.29
£24.29
£24.29 - £24.29
£24.29

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