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Softail – Engine & Gaskets

Engine components, cams, pistons, belts, clutch kits and drivetrain parts for Harley-Davidson Softail models.

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S&S Cycle Crankcase MK-Series 4-1/2" for 2017-2025 Harley-Davidson Black Kit
£2,428.75 - £2,428.75
£2,428.75
£2,428.75 - £2,428.75
£2,428.75

S&S Cycle Crankcase MK-Series 4-1/2" for 2017-2025 Harley-Davidson Black Kit #310-1341

Only 2 left!

DescriptionCrankcase MK-Series 4-1/2"The demand for performance-based parts is growing, and these M8 engines are creating more power daily. All tha...

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£2,428.75 - £2,428.75
£2,428.75
£2,428.75 - £2,428.75
£2,428.75
S&S Cycle Replacement Rings 4" for 1999-2017 Harley-Davidson Piston Ring Set
£101.46 - £101.46
£101.46
£101.46 - £101.46
£101.46

S&S Cycle Replacement Rings 4" for 1999-2017 Harley-Davidson Piston Ring Set #940-0056

in stock

DescriptionReplacement Rings 4"For 4" Bore Side Winder Pistons made by S & SFitment 2012-2013 Harley-Davidson FLD 1690 Dyna Switchback 2012-201...

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£101.46 - £101.46
£101.46
£101.46 - £101.46
£101.46
S&S Cycle Big Bore Piston Kit for 2022-2023 Harley-Davidson
£559.39 - £559.39
£559.39
£559.39 - £559.39
£559.39

S&S Cycle Big Bore Piston Kit for 2022-2023 Harley-Davidson #920-0142

in stock

DescriptionBig Bore Piston KitPiston kit includes set of pistons, rings, wristpins, and clipCompression ratios listed are approximate and are calcu...

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£559.39 - £559.39
£559.39
£559.39 - £559.39
£559.39
S&S Cycle Piston Kit 80" Stock Big Twin for 1979-1980 Harley-Davidson High Compression
£372.91 - £372.91
£372.91
£372.91 - £372.91
£372.91

S&S Cycle Piston Kit 80" Stock Big Twin for 1979-1980 Harley-Davidson High Compression #106-5521

in stock

DescriptionPiston Kit 80" Stock Big TwinFor 80" stock big twin motorsForged pistons for superior strengthPiston kits include set of pistons, rings,...

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£372.91 - £372.91
£372.91
£372.91 - £372.91
£372.91
S&S Cycle 132" Power Package Performance Kit for 2017-2026 Harley-Davidson Black Granite Highlighted Fins 496 Series Engine
£4,227.59 - £4,227.59
£4,227.59
£4,227.59 - £4,227.59
£4,227.59

S&S Cycle 132" Power Package Performance Kit for 2017-2026 Harley-Davidson Black Granite Highlighted Fins 496 Series Engine #310-1400A

Only 3 left!

Description132" Power Package Performance KitUpdated profile to fit M8 models including the VVT modelsBig bore bolt-on kit increases your 114"/117"...

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£4,227.59 - £4,227.59
£4,227.59
£4,227.59 - £4,227.59
£4,227.59
S&S Cycle 132" Power Package for 2017-2026 Harley-Davidson Performance Kit Black Granite Highlighted Fins 550C
£4,227.59 - £4,227.59
£4,227.59
£4,227.59 - £4,227.59
£4,227.59

S&S Cycle 132" Power Package for 2017-2026 Harley-Davidson Performance Kit Black Granite Highlighted Fins 550C #310-1235D

Only 4 left!

Description132" Power PackageBig-bore bolt-in kit increases 114"/117" engine with 4.5" stroke M8 to 132" engine with no case machining requiredUpda...

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£4,227.59 - £4,227.59
£4,227.59
£4,227.59 - £4,227.59
£4,227.59
S&S Cycle Piston Kit for Royal Enfield 650 Twins for 2019-2021, 2023 ROYAL ENFIELD Forged High Compression Dual Ring
£449.10 - £449.10
£449.10
£449.10 - £449.10
£449.10

S&S Cycle Piston Kit for Royal Enfield 650 Twins for 2019-2021, 2023 ROYAL ENFIELD Forged High Compression Dual Ring #920-0143

in stock

DescriptionPiston Kit for Royal Enfield 650 TwinsHigher compression is a key factor in increasing performanceFitment 2019-2021, 2023 ROYAL ENFIELD ...

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£449.10 - £449.10
£449.10
£449.10 - £449.10
£449.10
S&S Cycle 132" Power Package for 2018-2026 Harley-Davidson Performance Kit Non-Highlighted Fins Wrinkle Black 550G
£4,488.03 - £4,488.03
£4,488.03
£4,488.03 - £4,488.03
£4,488.03

S&S Cycle 132" Power Package for 2018-2026 Harley-Davidson Performance Kit Non-Highlighted Fins Wrinkle Black 550G #310-1234D

Only 2 left!

Description132" Power PackageBig-bore bolt-in kit increases 114"/117" engine with 4.5" stroke M8 to 132" engine with no case machining requiredUpda...

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£4,488.03 - £4,488.03
£4,488.03
£4,488.03 - £4,488.03
£4,488.03
S&S Cycle 129" Power Package for 2017-2026 Harley-Davidson Performance Kit Non-Highlighted Fins Wrinkle Black 550C
£4,143.63 - £4,143.63
£4,143.63
£4,143.63 - £4,143.63
£4,143.63

S&S Cycle 129" Power Package for 2017-2026 Harley-Davidson Performance Kit Non-Highlighted Fins Wrinkle Black 550C #310-1226D

Only 3 left!

Description129" Power PackageBig-bore bolt-on kit increases 107" M8 to 129" with no case machining required4.32" bore cylinders with 11.0:1 compres...

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£4,143.63 - £4,143.63
£4,143.63
£4,143.63 - £4,143.63
£4,143.63
S&S Cycle 129" Power Package Engine Performance Kit for 2017-2026 Harley-Davidson Black Highlighted Fins HPT496 Series
£4,398.88 - £4,398.88
£4,398.88
£4,398.88 - £4,398.88
£4,398.88

S&S Cycle 129" Power Package Engine Performance Kit for 2017-2026 Harley-Davidson Black Highlighted Fins HPT496 Series #310-1399

Only 3 left!

Description129" Power Package Engine Performance KitBig bore bolt-on kit increases 107" M8 to 129" with no case machining requiredBig bore 4.320" c...

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£4,398.88 - £4,398.88
£4,398.88
£4,398.88 - £4,398.88
£4,398.88
S&S Cycle 128" Power Package for 2017-2026 Harley-Davidson Performance Kit Black Granite Highlighted Fins 550G
£4,488.03 - £4,488.03
£4,488.03
£4,488.03 - £4,488.03
£4,488.03

S&S Cycle 128" Power Package for 2017-2026 Harley-Davidson Performance Kit Black Granite Highlighted Fins 550G #310-1110D

Only 2 left!

Description128" Power PackageBolt-inUpdated profileForged pistonsMade in the USAIncludes oil pump/cam plate, pushrods, tappets, tappet cuffs, 550 c...

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£4,488.03 - £4,488.03
£4,488.03
£4,488.03 - £4,488.03
£4,488.03
S&S Cycle 129" Power Package Engine Performance Kit for 2017-2026 Harley-Davidson Black Non-Highlighted Fins HPT496 Series
£4,449.33 - £4,449.33
£4,449.33
£4,449.33 - £4,449.33
£4,449.33

S&S Cycle 129" Power Package Engine Performance Kit for 2017-2026 Harley-Davidson Black Non-Highlighted Fins HPT496 Series #310-1397

Only 3 left!

Description129" Power Package Engine Performance KitBig bore bolt-on kit increases 107" M8 to 129" with no case machining requiredBig bore 4.320" c...

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£4,449.33 - £4,449.33
£4,449.33
£4,449.33 - £4,449.33
£4,449.33
S&S Cycle 129" Power Package Engine Performance Kit for 2017-2026 Harley-Davidson Black Highlighted Fins HPT496 Series
£4,488.03 - £4,488.03
£4,488.03
£4,488.03 - £4,488.03
£4,488.03

S&S Cycle 129" Power Package Engine Performance Kit for 2017-2026 Harley-Davidson Black Highlighted Fins HPT496 Series #310-1398

Only 3 left!

Description129" Power Package Engine Performance KitBig bore bolt-on kit increases 107" M8 to 129" with no case machining requiredBig bore 4.320" c...

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£4,488.03 - £4,488.03
£4,488.03
£4,488.03 - £4,488.03
£4,488.03
S&S Cycle 129" Power Package Engine Performance Kit for 2017-2026 Harley-Davidson Black Highlighted Fins HPT496 Series
£2,530.53 - £2,530.53
£2,530.53
£2,530.53 - £2,530.53
£2,530.53

S&S Cycle 129" Power Package Engine Performance Kit for 2017-2026 Harley-Davidson Black Highlighted Fins HPT496 Series #310-1395

in stock

Description129" Power Package Engine Performance KitBig bore bolt-on kit increases 107" M8 to 129" with no case machining requiredBig bore 4.320" c...

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£2,530.53 - £2,530.53
£2,530.53
£2,530.53 - £2,530.53
£2,530.53
S&S Cycle 132" Power Package Engine Performance Kit for 2017-2026 Harley-Davidson Black Granite HPT496 Series
£4,449.33 - £4,449.33
£4,449.33
£4,449.33 - £4,449.33
£4,449.33

S&S Cycle 132" Power Package Engine Performance Kit for 2017-2026 Harley-Davidson Black Granite HPT496 Series #310-1402

Only 2 left!

Description132" Power Package Engine Performance KitBig bore bolt-on kit increases your 114"/117" with 4.50" stroke M8 to 132" with no case machini...

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£4,449.33 - £4,449.33
£4,449.33
£4,449.33 - £4,449.33
£4,449.33
S&S Cycle 129" Power Package Engine Performance Kit for 2017-2026 Harley-Davidson Black Highlighted Fins HPT496 Series
£2,530.53 - £2,530.53
£2,530.53
£2,530.53 - £2,530.53
£2,530.53

S&S Cycle 129" Power Package Engine Performance Kit for 2017-2026 Harley-Davidson Black Highlighted Fins HPT496 Series #310-1396

in stock

Description129" Power Package Engine Performance KitBig bore bolt-on kit increases 107" M8 to 129" with no case machining requiredBig bore 4.320" c...

View full details
£2,530.53 - £2,530.53
£2,530.53
£2,530.53 - £2,530.53
£2,530.53
S&S Cycle 132" Power Package Engine Performance Kit for 2017-2025 Harley-Davidson Black Highlighted Fins HPT496 Series
£2,577.38 - £2,577.38
£2,577.38
£2,577.38 - £2,577.38
£2,577.38

S&S Cycle 132" Power Package Engine Performance Kit for 2017-2025 Harley-Davidson Black Highlighted Fins HPT496 Series #310-1401

Only 4 left!

Description132" Power Package Engine Performance KitBig bore bolt-on kit increases your 114"/117" with 4.50" stroke M8 to 132" with no case machini...

View full details
£2,577.38 - £2,577.38
£2,577.38
£2,577.38 - £2,577.38
£2,577.38
S&S Cycle 132" Power Package Engine Performance Kit for 2017-2026 Harley-Davidson Black Highlighted Fins HPT496 Series
£4,398.88 - £4,398.88
£4,398.88
£4,398.88 - £4,398.88
£4,398.88

S&S Cycle 132" Power Package Engine Performance Kit for 2017-2026 Harley-Davidson Black Highlighted Fins HPT496 Series #310-1393

Only 3 left!

Description132" Power Package Engine Performance KitBig bore bolt-on kit increases your 114"/117" with 4.50" stroke M8 to 132" with no case machini...

View full details
£4,398.88 - £4,398.88
£4,398.88
£4,398.88 - £4,398.88
£4,398.88
S&S Cycle 132" Power Package Engine Performance Kit for 2017-2026 Harley-Davidson Black Highlighted Fins HPT496 Series
£4,398.88 - £4,398.88
£4,398.88
£4,398.88 - £4,398.88
£4,398.88

S&S Cycle 132" Power Package Engine Performance Kit for 2017-2026 Harley-Davidson Black Highlighted Fins HPT496 Series #310-1403

Only 3 left!

Description132" Power Package Engine Performance KitBig bore bolt-on kit increases your 114"/117" with 4.50" stroke M8 to 132" with no case machini...

View full details
£4,398.88 - £4,398.88
£4,398.88
£4,398.88 - £4,398.88
£4,398.88
S&S Cycle 132" Power Package Engine Performance Kit for 2017-2025 Harley-Davidson Black Granite HPT496 Series
£2,577.38 - £2,577.38
£2,577.38
£2,577.38 - £2,577.38
£2,577.38

S&S Cycle 132" Power Package Engine Performance Kit for 2017-2025 Harley-Davidson Black Granite HPT496 Series #310-1400

Only 4 left!

Description132" Power Package Engine Performance KitBig bore bolt-on kit increases your 114"/117" with 4.50" stroke M8 to 132" with no case machini...

View full details
£2,577.38 - £2,577.38
£2,577.38
£2,577.38 - £2,577.38
£2,577.38
S&S Cycle 129" Power Package Engine Performance Kit for 2017-2026 Harley-Davidson Black Non-Highlighted Fins HPT496 Series
£2,530.53 - £2,530.53
£2,530.53
£2,530.53 - £2,530.53
£2,530.53

S&S Cycle 129" Power Package Engine Performance Kit for 2017-2026 Harley-Davidson Black Non-Highlighted Fins HPT496 Series #310-1394

Only 4 left!

Description129" Power Package Engine Performance KitBig bore bolt-on kit increases 107" M8 to 129" with no case machining requiredBig bore 4.320" c...

View full details
£2,530.53 - £2,530.53
£2,530.53
£2,530.53 - £2,530.53
£2,530.53
S&S Cycle 132" Power Package Engine Performance Kit for 2017-2026 Harley-Davidson Black Non-Highlighted Fins HPT496 Series
£4,398.88 - £4,398.88
£4,398.88
£4,398.88 - £4,398.88
£4,398.88

S&S Cycle 132" Power Package Engine Performance Kit for 2017-2026 Harley-Davidson Black Non-Highlighted Fins HPT496 Series #310-1392

Only 2 left!

Description132" Power Package Engine Performance KitBig bore bolt-on kit increases your 114"/117" with 4.50" stroke M8 to 132" with no case machini...

View full details
£4,398.88 - £4,398.88
£4,398.88
£4,398.88 - £4,398.88
£4,398.88
S&S Cycle 132" Power Package Engine Performance Kit for 2017-2026 Harley-Davidson Black Granite HPT496 Series
£4,398.88 - £4,398.88
£4,398.88
£4,398.88 - £4,398.88
£4,398.88

S&S Cycle 132" Power Package Engine Performance Kit for 2017-2026 Harley-Davidson Black Granite HPT496 Series #310-1391

Only 2 left!

Description132" Power Package Engine Performance KitBig bore bolt-on kit increases your 114"/117" with 4.50" stroke M8 to 132" with no case machini...

View full details
£4,398.88 - £4,398.88
£4,398.88
£4,398.88 - £4,398.88
£4,398.88
S&S Cycle 132" Power Package Engine Performance Kit for 2017-2026 Harley-Davidson Black Non-Highlighted Fins HPT496 Series
£2,530.53 - £2,530.53
£2,530.53
£2,530.53 - £2,530.53
£2,530.53

S&S Cycle 132" Power Package Engine Performance Kit for 2017-2026 Harley-Davidson Black Non-Highlighted Fins HPT496 Series #310-1389

Only 4 left!

Description132" Power Package Engine Performance KitBig bore bolt-on kit increases your 114"/117" with 4.50" stroke M8 to 132" with no case machini...

View full details
£2,530.53 - £2,530.53
£2,530.53
£2,530.53 - £2,530.53
£2,530.53

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