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Pre-Evo – Engine & Gaskets

Engine components, gaskets, seals and related parts for Harley-Davidson Pre-Evolution classic models.

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S&S Cycle 124" Cylinder and Piston Kit Big Bore Cylinder Kit Black Powder-Coated
£1,710.46 - £1,710.46
£1,710.46
£1,710.46 - £1,710.46
£1,710.46

S&S Cycle 124" Cylinder and Piston Kit Big Bore Cylinder Kit Black Powder-Coated #910-0324

in stock

Description124" Cylinder and Piston KitKit includes fitted forged pistons, pins, clips, rings, cylinders, head gaskets, base, and exhaust gaskets10...

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£1,710.46 - £1,710.46
£1,710.46
£1,710.46 - £1,710.46
£1,710.46
S&S Cycle Big Bore Cylinder Kit Black Aluminium
£1,710.46 - £1,710.46
£1,710.46
£1,710.46 - £1,710.46
£1,710.46

S&S Cycle Big Bore Cylinder Kit Black Aluminium #910-0338

in stock

DescriptionBig Bore Cylinder KitBig Bore kit yields excellent results with stock cylinder headsEasy installation no need to bore or split existing ...

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£1,710.46 - £1,710.46
£1,710.46
£1,710.46 - £1,710.46
£1,710.46
S&S Cycle Bolt-In Sidewinder® 4" Big Bore Kits Cylinder and Piston Kit Silver
£1,603.30 - £1,603.30
£1,603.30
£1,603.30 - £1,603.30
£1,603.30

S&S Cycle Bolt-In Sidewinder® 4" Big Bore Kits Cylinder and Piston Kit Silver #910-0650

in stock

DescriptionBolt-In Sidewinder® 4" Big Bore KitsBolt in - no machining, balancing or splitting the crankcases; install can be performed with engine ...

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£1,603.30 - £1,603.30
£1,603.30
£1,603.30 - £1,603.30
£1,603.30
S&S Cycle Big Bore Cylinder Kit Black Aluminium
£1,444.73 - £1,444.73
£1,444.73
£1,444.73 - £1,444.73
£1,444.73

S&S Cycle Big Bore Cylinder Kit Black Aluminium #910-0221

Only 4 left!

DescriptionBig Bore Cylinder KitBig Bore kit yields excellent results with stock cylinder headsEasy installation no need to bore or split existing ...

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£1,444.73 - £1,444.73
£1,444.73
£1,444.73 - £1,444.73
£1,444.73
S&S Cycle Big Bore Cylinder Kit Grey Aluminium
Sold out
£1,710.46 - £1,710.46
£1,710.46
£1,710.46 - £1,710.46
£1,710.46

S&S Cycle Big Bore Cylinder Kit Grey Aluminium #910-0474

Out of stock

DescriptionBig Bore Cylinder KitBig Bore kit yields excellent results with stock cylinder headsEasy installation no need to bore or split existing ...

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£1,710.46 - £1,710.46
£1,710.46
£1,710.46 - £1,710.46
£1,710.46
Sold out
S&S Cycle Bolt-In Sidewinder® 4" Big Bore Kits Cylinder and Piston Kit Black
£1,403.07 - £1,403.07
£1,403.07
£1,403.07 - £1,403.07
£1,403.07

S&S Cycle Bolt-In Sidewinder® 4" Big Bore Kits Cylinder and Piston Kit Black #910-0651

in stock

DescriptionBolt-In Sidewinder® 4" Big Bore KitsBolt in - no machining, balancing or splitting the crankcases; install can be performed with engine ...

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£1,403.07 - £1,403.07
£1,403.07
£1,403.07 - £1,403.07
£1,403.07
S&S Cycle Pinion Gear Nut Steel
£34.66 - £34.66
£34.66
£34.66 - £34.66
£34.66

S&S Cycle Pinion Gear Nut Steel #33-4254

Only 4 left!

DescriptionPinion Gear NutReplacement for stock pinion gear nutSpecifications Material: Steel Product Name: Nut Type: Pinion Gear Units: Each P...

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£34.66 - £34.66
£34.66
£34.66 - £34.66
£34.66
S&S Cycle TC3 Oil Pump Blue
£418.45 - £418.45
£418.45
£418.45 - £418.45
£418.45

S&S Cycle TC3 Oil Pump Blue #310-0641

in stock

DescriptionTC3 Oil PumpThree stages for consistent pressure and reliable scavengingSeparate scavenge sections for flywheel cavity and cam chest (no...

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£418.45 - £418.45
£418.45
£418.45 - £418.45
£418.45
S&S Cycle TC3 Oil Pump and Cam Support Plate Kit Blue Aluminium
£700.49 - £700.49
£700.49
£700.49 - £700.49
£700.49

S&S Cycle TC3 Oil Pump and Cam Support Plate Kit Blue Aluminium #310-0732

in stock

DescriptionTC3 Oil Pump and Cam Support Plate KitPrecision CNC machined forged aluminiumIncreased structural strengthDimensional stabilityFreedom f...

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£700.49 - £700.49
£700.49
£700.49 - £700.49
£700.49
S&S Cycle Oil Pump Check Ball Check Valve
£2.97 - £2.97
£2.97
£2.97 - £2.97
£2.97

S&S Cycle Oil Pump Check Ball Check Valve #50-8091

in stock

DescriptionOil Pump Check BallOil Pump Check Ball for Harley Davidson modelsSpecifications Type: Check Valve Product Name: Ball Riding Style: St...

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£2.97 - £2.97
£2.97
£2.97 - £2.97
£2.97
S&S Cycle T143 Top Engine Mount Bracket Zinc
£90.20 - £90.20
£90.20
£90.20 - £90.20
£90.20

S&S Cycle T143 Top Engine Mount Bracket Zinc #900-0798

in stock

DescriptionT143 Top Engine Mount BracketFits in stock chassis, no cutting or frame modifications necessary. B3 cylinder heads CNC-machined with two...

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£90.20 - £90.20
£90.20
£90.20 - £90.20
£90.20
S&S Cycle Oil Pump Kit
£689.21 - £689.21
£689.21
£689.21 - £689.21
£689.21

S&S Cycle Oil Pump Kit #31-6293

in stock

DescriptionOil Pump KitKit includes an oil pump with cover, mounting bolts, supply and return gears, drive shaft with keys and snap rings, check ba...

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£689.21 - £689.21
£689.21
£689.21 - £689.21
£689.21
S&S Cycle Oil Pump Anodised Blue Billet Aluminium
£515.52 - £515.52
£515.52
£515.52 - £515.52
£515.52

S&S Cycle Oil Pump Anodised Blue Billet Aluminium #310-0959A

in stock

DescriptionOil PumpPumps are made from precision-machined billet aluminiumIndependent scavenge sections for flywheel cavity and cam chestDebris scr...

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£515.52 - £515.52
£515.52
£515.52 - £515.52
£515.52
S&S Cycle Oil Pump Screen
£15.36 - £15.36
£15.36
£15.36 - £15.36
£15.36

S&S Cycle Oil Pump Screen #310-0546

in stock

DescriptionOil Pump ScreenOEM replacement parts for S&S Oil PumpSpecifications Riding Style: Street Units: Each Type: Oil Pump Product ...

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£15.36 - £15.36
£15.36
£15.36 - £15.36
£15.36
S&S Cycle Oil Pump Anodised Blue Billet Aluminium
£492.09 - £492.09
£492.09
£492.09 - £492.09
£492.09

S&S Cycle Oil Pump Anodised Blue Billet Aluminium #310-0947A

in stock

DescriptionOil PumpPumps are made from precision-machined billet aluminiumIndependent scavenge sections for flywheel cavity and cam chestDebris scr...

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£492.09 - £492.09
£492.09
£492.09 - £492.09
£492.09
S&S Cycle O-Ring Custom Replacement Silicone 10 Pack
£19.35 - £19.35
£19.35
£19.35 - £19.35
£19.35

S&S Cycle O-Ring Custom Replacement Silicone 10 Pack #50-8095

in stock

DescriptionO-RingO-Ring for Super E & G CarburetorsSpecifications Outside Diameter: 0,510" Product Name: O-Ring Inside Diameter: 0,390" ...

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£19.35 - £19.35
£19.35
£19.35 - £19.35
£19.35
S&S Cycle Left Main Bearing Seal Oil
£22.54 - £22.54
£22.54
£22.54 - £22.54
£22.54

S&S Cycle Left Main Bearing Seal Oil #31-4060

in stock

DescriptionLeft Main Bearing SealSprocket shaft seal for '86-'03 XLSpecifications Outside Diameter Imperial: 2.000" Riding Style: Street Inside ...

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£22.54 - £22.54
£22.54
£22.54 - £22.54
£22.54
S&S Cycle Valve Guide Seals 8 Pack
£21.63 - £21.63
£21.63
£21.63 - £21.63
£21.63

S&S Cycle Valve Guide Seals 8 Pack #90-2158

in stock

DescriptionValve Guide SealsHigh-quality replacement valve guide sealsMade in the USAFor 0.720" and 0.660" lift valve spring (B3 cylinder heads).Sp...

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£21.63 - £21.63
£21.63
£21.63 - £21.63
£21.63
S&S Cycle Gasket Breather Paper
Sold out
£7.07 - £7.07
£7.07
£7.07 - £7.07
£7.07

S&S Cycle Gasket Breather Paper #90-4078

Out of stock

DescriptionGasket BreatherS+S Cycle Gasket, Breather Cover, Stock Pattern, PaperSpecifications Units: Each Type: Breather Product Name: Gasket ...

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£7.07 - £7.07
£7.07
£7.07 - £7.07
£7.07
Sold out
S&S Cycle Stainless Steel Replacement Intake Valve For 79cc S&S Super Stock cylinder heads
Save 8% Save %
£84.19
£84.19 - £84.19
£84.19
£77.13
£77.13 - £77.13
£77.13

S&S Cycle Stainless Steel Replacement Intake Valve For 79cc S&S Super Stock cylinder heads #90-2025

in stock

DescriptionReplacement Stainless Steel Valves for S&S HeadsHeads are also found on S&S Twin Cam-style motors and use 1.940" intake valves a...

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£84.19
£84.19 - £84.19
£84.19
£77.13
£77.13 - £77.13
£77.13
Save 8% Save %
S&S Cycle Stainless Steel Replacement Exhaust Valve for Various Various Harley-Davidson Motorcycles (See Fitment List)
Save 8% Save %
£90.81
£90.81 - £90.81
£90.81
£83.17
£83.17 - £83.17
£83.17

S&S Cycle Stainless Steel Replacement Exhaust Valve for Various Various Harley-Davidson Motorcycles (See Fitment List) #90-2001

in stock

DescriptionReplacement Stainless Steel Valves for S&S HeadsHeads are found on S&S Twin Cam-style motors and use 2.000" intake valves and 1....

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£90.81
£90.81 - £90.81
£90.81
£83.17
£83.17 - £83.17
£83.17
Save 8% Save %
S&S Cycle Stainless Steel Replacement Intake Valve
Save 8% Save %
£45.38
£45.38 - £45.38
£45.38
£41.56
£41.56 - £41.56
£41.56

S&S Cycle Stainless Steel Replacement Intake Valve #90-2000

in stock

DescriptionReplacement Stainless Steel Valves for S&S HeadsHeads are found on S&S Twin Cam-style motors and use 2.000" intake valves and 1....

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£45.38
£45.38 - £45.38
£45.38
£41.56
£41.56 - £41.56
£41.56
Save 8% Save %
S&S Cycle Stainless Steel Replacement Exhaust Valve for Various Various Harley-Davidson Motorcycles (See Fitment List)
Save 8% Save %
£88.23
£88.23 - £88.23
£88.23
£80.79
£80.79 - £80.79
£80.79

S&S Cycle Stainless Steel Replacement Exhaust Valve for Various Various Harley-Davidson Motorcycles (See Fitment List) #90-2026

Only 3 left!

DescriptionReplacement Stainless Steel Valves for S&S HeadsHeads are also found on S&S Twin Cam-style motors and use 1.940" intake valves a...

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£88.23
£88.23 - £88.23
£88.23
£80.79
£80.79 - £80.79
£80.79
Save 8% Save %
S&S Cycle Electric Compression Release Kit
Save 8% Save %
£497.43
£497.43 - £497.43
£497.43
£455.53
£455.53 - £455.53
£455.53

S&S Cycle Electric Compression Release Kit #90-4915

in stock

DescriptionCompression Release KitElectric compression releases open when you press the start button and close when the button is releasedManual co...

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£497.43
£497.43 - £497.43
£497.43
£455.53
£455.53 - £455.53
£455.53
Save 8% Save %

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