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200,000+ Parts & Accessories
Our catalogue has grown extensively over the years and we now source a huge range of parts and accessories from a number of distributors from round the world.

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We're more than happy to have customers order which ever way they prefer. If you'd like to discuss anything over the phone prior to ordering we'd be delighted to help you.

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We know when customers receive their orders there is always the possibility of needing to exchange or return items for a refund. Rest assured if you need to, we make it simple. See T&C's for more details.

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Price Match Promise 
We offer a price match promise on all items we sell. Use the "Seen it cheaper?" option found on the product pages to request a price match.

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ARH Custom Custom Motorcycle Parts and Accessories ARH Custom Custom Motorcycle Parts and Accessories
Brand - S&S Cycle ×
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S&S Cycle Big Bore Kits

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Showing 1 to 50 of 59 products in this section.
S&S 883cc to 1200cc Hooligan Big Bore Kit In Silver For 2000-2020 Sportster (910-0607)
S&S 124 Inch Hot Setup Kit in Black Finish For 1999-2006 Twin Cam 88A (Excluding 2006 Dyna) Models (900-0564)
S&S 124 Inch Hot Setup Kit in Black Finish For 1999-2006 Twin Cam 88A (Excluding 2006 Dyna) Models (900-0564) $8,625.16
  US stock

Usually ships in 3-4 weeks

All orders are shipped out of our UK premises. Estimated shipping date between 13 May and 17 May.

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S&S 88 Inch / 1436CC 3-5/8 Inch Big Bore Cylinder & Piston Kit in Natural Aluminium Finish For 1984-1999 Evo Big Twin Models (91-7002)
S&S 88 Inch / 1436CC 3-5/8 Inch Big Bore Cylinder & Piston Kit in Natural Aluminium Finish For 1984-1999 Evo Big Twin Models (91-7002) $1,343.66
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 23 Apr and 26 Apr.

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S&S Cycle 865CC Big Bore Kit For 2019-2021 Royal Enfield 650 Twin Models (920-0145)
S&S Cycle 865CC Big Bore Kit For 2019-2021 Royal Enfield 650 Twin Models (920-0145) $723.29
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 23 Apr and 26 Apr.

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S&S Cycle 3-1/2 Inch Bore Cylinder & Piston Kit In Wrinkle Black Finish For Harley Davidson 1984-1999 Big Twin Models (910-0182)
S&S Cycle 3-1/2 Inch Bore Cylinder & Piston Kit In Wrinkle Black Finish For Harley Davidson 1984-1999 Big Twin Models (910-0182) $1,340.04
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 23 Apr and 26 Apr.

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S&S 1200-1250 Hooligan Big Bore Cylinder & Piston Kit in Wrinkle Black Finish For 2000-2022 XL1200 Models (910-0701)
S&S 1200-1250 Hooligan Big Bore Cylinder & Piston Kit in Wrinkle Black Finish For 2000-2022 XL1200 Models (910-0701) $1,871.17
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 23 Apr and 26 Apr.

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S&S 88CI 3-5/8 Inch Big Bore Kit 66-84 Big Twin (91-9001)
S&S 88CI 3-5/8 Inch Big Bore Kit 66-84 Big Twin (91-9001) $1,450.04
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 23 Apr and 26 Apr.

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S&S Cycle Retro 3.625 Inch Bore Top End Conversion Kit For 1966-1984 FL, FX, FXR Models (106-1071)
S&S Cycle Retro 3.625 Inch Bore Top End Conversion Kit For 1966-1984 FL, FX, FXR Models (106-1071) $3,589.18
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 23 Apr and 26 Apr.

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S&S 883-1200 Conversion Piston Kit Standard Size For 1986-2022 XL883/1100 Sportster Models (106-5548)
S&S 883-1200 Conversion Piston Kit Standard Size For 1986-2022 XL883/1100 Sportster Models (106-5548) $502.36
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 23 Apr and 26 Apr.

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S&S 883-1200 Conversion Piston Kit +.020 Inch Size For 1986-2022 XL883/1100 Sportster Models (106-5550)
S&S 883-1200 Conversion Piston Kit +.020 Inch Size For 1986-2022 XL883/1100 Sportster Models (106-5550) $491.67
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 23 Apr and 26 Apr.

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S&S 883-1200 Conversion Piston Kit +.010 Inch Size For 1986-2022 XL883/1100 Sportster Models (106-5549)
S&S 883-1200 Conversion Piston Kit +.010 Inch Size For 1986-2022 XL883/1100 Sportster Models (106-5549) $513.05
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 23 Apr and 26 Apr.

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S&S Cycle 132 inch Big Bore Highlighted Cylinder Kit With For 2017-2023 Softail & Touring (910-0845)
S&S Cycle 132 inch Big Bore Highlighted Cylinder Kit With For 2017-2023 Softail & Touring (910-0845) $1,805.33
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 23 Apr and 26 Apr.

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S&S 124 Inch Hot Setup Kit With Black Heads For 2007-2017 Softail Models (900-0569)
S&S 124 Inch Hot Setup Kit With Black Heads For 2007-2017 Softail Models (900-0569) Now $6,123.86
Was $6,446.17
(Save $322.31)

  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 23 Apr and 26 Apr.

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S&S 124 Inch Hot Setup Kit With Black Heads For 2001-2006 Softail Models (900-0565)
S&S 124 Inch Hot Setup Kit With Black Heads For 2001-2006 Softail Models (900-0565) $6,446.17
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 23 Apr and 26 Apr.

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S&S 124 Inch Hot Setup Kit With Silver Heads For 2001-2006 Softail Models (900-0222)
S&S Cycle 128 CI Power Package In Black Granite With Highlighted Fins For 2017-2023 M8 114 & 117 Oil Cooled Chain Drive Cam Models (310-1109B)
S&S Cycle 128 CI Power Package In Black Granite With Highlighted Fins For 2017-2023 M8 114 & 117 Oil Cooled Chain Drive Cam Models (310-1109B) $2,791.72
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 23 Apr and 26 Apr.

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S&S Cycle Big Bore Cylinder Kit From 117 to 128 In Black Granite With Highlighting 4.250 Bore x 4.5 Stroke For Harley Davidson 2018-2023 Touring M8 Models (910-0733)
S&S Cycle Big Bore Cylinder Kit From 117 to 128 In Black Granite With Highlighting 4.250 Bore x 4.5 Stroke For Harley Davidson 2018-2023 Touring M8 Models (910-0733) $1,460.32
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 23 Apr and 26 Apr.

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S&S Cycle 131 Inch Big Bore Cylinder & Piston Kit In Wrinkle Black With Black Fins For Harley Davidson 2018-2023 Softail & 2017-2023 Touring Models (910-0763)
S&S Cycle 131 Inch Big Bore Cylinder & Piston Kit In Wrinkle Black With Black Fins For Harley Davidson 2018-2023 Softail & 2017-2023 Touring Models (910-0763) $1,673.19
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 23 Apr and 26 Apr.

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S&S Cycle 131 Inch Big Bore Cylinder & Piston Kit In Wrinkle Black With Highlighted Fins For Harley Davidson 2018-2023 Softail & 2017-2023 Touring Models (910-0762)
S&S Cycle 131 Inch Big Bore Cylinder & Piston Kit In Wrinkle Black With Highlighted Fins For Harley Davidson 2018-2023 Softail & 2017-2023 Touring Models (910-0762) $1,673.19
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 23 Apr and 26 Apr.

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S&S Cycle Big Bore Conversion Cylinder & Piston Kit From 114 Inch To 128 Inch In Black With Highlights For Harley Davidson 2017-2023 Touring M8 & 2018-2023 Softail M8 Models (910-0684)
S&S Cycle Big Bore Conversion Cylinder & Piston Kit From 114 Inch To 128 Inch In Black With Highlights For Harley Davidson 2017-2023 Touring M8 & 2018-2023 Softail M8 Models (910-0684) $1,558.40
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 23 Apr and 26 Apr.

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S&S Cycle Big Bore Cylinder Set 4.250 Bore In Black Granite With Highlights For Harley Davidson 2017-2023 Touring M8 & 2018-2023 Softail M8 Models (910-0739)
S&S Cycle Big Bore Cylinder Set 4.250 Bore In Black Granite With Highlights For Harley Davidson 2017-2023 Touring M8 & 2018-2023 Softail M8 Models (910-0739) Now $737.91
Was $776.75
(Save $38.84)

  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 23 Apr and 26 Apr.

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S&S Cycle 129 inch Big Bore Highlighted Cylinder Kit With For 2017-2023 Softail & Touring (910-0843)
S&S Cycle 132 inch Big Bore Cylinder Kit Non-Highlighted For 2017-2023 Softail & Touring (910-0846)
S&S Cycle 132 inch Big Bore Cylinder Kit Non-Highlighted For 2017-2023 Softail & Touring (910-0846) $2,038.70
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 23 Apr and 26 Apr.

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S&S Cycle 129 inch Big Bore Non-Highlighted Cylinder Kit With For 2017-2023 Softail & Touring (910-0844)
S&S Cycle 129 inch Big Bore Non-Highlighted Cylinder Kit With For 2017-2023 Softail & Touring (910-0844) $1,657.10
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 23 Apr and 26 Apr.

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S&S Cycle 128 CI Power Package In Wrinkle Black With Highlighted Fins For 2017-2023 M8 114 & 117 Water Cooled Chain Drive Cam Models (310-1101B)
S&S Cycle 128 CI Power Package In Wrinkle Black With Highlighted Fins For 2017-2023 M8 114 & 117 Water Cooled Chain Drive Cam Models (310-1101B) $4,061.66
  US stock

Usually ships in 3-4 weeks

All orders are shipped out of our UK premises. Estimated shipping date between 13 May and 17 May.

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S&S Cycle 128 CI Power Package In Black Granite With Highlighted Fins For 2017-2023 M8 114 & 117 Oil Cooled Gear Drive Cam Models (310-1110A)
S&S Cycle 128 CI Power Package In Black Granite With Highlighted Fins For 2017-2023 M8 114 & 117 Oil Cooled Gear Drive Cam Models (310-1110A) $4,044.01
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 23 Apr and 26 Apr.

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S&S Cycle 128 CI Power Package In Wrinkle Black With Non-Highlighted Fins For 2017-2023 M8 114 & 117 Oil Cooled Gear Drive Cam Models (310-1106A)
S&S Cycle 128 CI Power Package In Wrinkle Black With Non-Highlighted Fins For 2017-2023 M8 114 & 117 Oil Cooled Gear Drive Cam Models (310-1106A) $3,156.30
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 23 Apr and 26 Apr.

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S&S Cycle 128 CI Power Package In Wrinkle Black With Non-Highlighted Fins For 2017-2023 M8 114 & 117 Oil Cooled Chain Drive Cam Models (310-1105B)
S&S Cycle 128 CI Power Package In Wrinkle Black With Non-Highlighted Fins For 2017-2023 M8 114 & 117 Oil Cooled Chain Drive Cam Models (310-1105B) $4,374.45
  US stock

Usually ships in 3-4 weeks

All orders are shipped out of our UK premises. Estimated shipping date between 13 May and 17 May.

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S&S Cycle 128 CI Power Package In Wrinkle Black With Highlighted Fins For 2017-2023 M8 114 & 117 Oil Cooled Gear Drive Cam Models (310-1104A)
S&S Cycle 128 CI Power Package In Wrinkle Black With Highlighted Fins For 2017-2023 M8 114 & 117 Oil Cooled Gear Drive Cam Models (310-1104A) $4,387.65
  US stock

Usually ships in 3-4 weeks

All orders are shipped out of our UK premises. Estimated shipping date between 13 May and 17 May.

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S&S Cycle 128 CI Power Package In Wrinkle Black With Highlighted Fins For 2017-2023 M8 114 & 117 Oil Cooled Chain Drive Cam Models (310-1103B)
S&S Cycle 128 CI Power Package In Wrinkle Black With Highlighted Fins For 2017-2023 M8 114 & 117 Oil Cooled Chain Drive Cam Models (310-1103B) $4,133.13
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 23 Apr and 26 Apr.

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S&S Cycles Power Package - 124 Inch Ci Oil Cooled, Chain Drive With Highlighted Fins And Black Pushrod Tubes For Harley Davidson 107 Inch M8 Models (310-1056B)
S&S Cycles Power Package - 124 Inch Ci Oil Cooled, Chain Drive With Highlighted Fins And Black Pushrod Tubes For Harley Davidson 107 Inch M8 Models (310-1056B) $3,589.64
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 23 Apr and 26 Apr.

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S&S Cycles Power Package - 124 Inch Ci Oil Cooled, Chain Drive With Non-Highlighted Fins And Black Pushrod Tubes For Harley Davidson 107 Inch M8 Models (310-1057B)
S&S Cycles Power Package - 124 Inch Ci Oil Cooled, Chain Drive With Non-Highlighted Fins And Black Pushrod Tubes For Harley Davidson 107 Inch M8 Models (310-1057B) $3,589.64
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 23 Apr and 26 Apr.

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S&S Cycles Power Package - 124 Inch Ci Oil Cooled, Gear Drive With Highlighted Fins And Chrome Pushrod Tubes For Harley Davidson 107 Inch M8 Models (310-1053A)
S&S Cycles Power Package - 124 Inch Ci Oil Cooled, Gear Drive With Highlighted Fins And Chrome Pushrod Tubes For Harley Davidson 107 Inch M8 Models (310-1053A) Now $3,264.52
Was $3,436.33
(Save $171.81)

  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 23 Apr and 26 Apr.

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S&S Cycles Power Package - 124 Inch Ci Oil Cooled, Chain Drive With Highlighted Fins And Chrome Pushrod Tubes For Harley Davidson 107 Inch M8 Models (310-1052B)
S&S Cycles Power Package - 124 Inch Ci Oil Cooled, Chain Drive With Highlighted Fins And Chrome Pushrod Tubes For Harley Davidson 107 Inch M8 Models (310-1052B) $3,589.64
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 23 Apr and 26 Apr.

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S&S Cycles Power Package - 124 Inch Ci Oil Cooled, Gear Drive With Non-highlighted Fins And Black Pushrod Tubes For Harley Davidson 107 Inch M8 Models (310-1059A)
S&S Cycles Power Package - 124 Inch Ci Oil Cooled, Gear Drive With Non-highlighted Fins And Black Pushrod Tubes For Harley Davidson 107 Inch M8 Models (310-1059A) $4,062.24
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 23 Apr and 26 Apr.

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S&S Cycle Big Bore Conversion Cylinder & Piston Kit From 114 Inch To 128 Inch In Black Without Highlights For Harley Davidson 2017-2023 Touring M8 & 2018-2023 Softail M8 Models (910-0685)
S&S Cycle Big Bore Conversion Cylinder & Piston Kit From 114 Inch To 128 Inch In Black Without Highlights For Harley Davidson 2017-2023 Touring M8 & 2018-2023 Softail M8 Models (910-0685) $1,685.02
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 23 Apr and 26 Apr.

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S&S Cycle Big Bore Conversion Cylinder & Piston Kit From 107 Inch To 124 Inch In Black With Highlights For Harley Davidson 2017-2023 Touring M8 & 2018-2023 Softail M8 Models (910-0625)
S&S Cycle Big Bore Conversion Cylinder & Piston Kit From 107 Inch To 124 Inch In Black With Highlights For Harley Davidson 2017-2023 Touring M8 & 2018-2023 Softail M8 Models (910-0625) $1,558.40
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 23 Apr and 26 Apr.

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S&S Cycle Big Bore Conversion Cylinder & Piston Kit From 107 Inch To 124 Inch In Black Without Highlights For Harley Davidson 2017-2023 Touring M8 & 2018-2023 Softail M8 Models (910-0681)
S&S Cycle Big Bore Conversion Cylinder & Piston Kit From 107 Inch To 124 Inch In Black Without Highlights For Harley Davidson 2017-2023 Touring M8 & 2018-2023 Softail M8 Models (910-0681) $1,558.40
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 23 Apr and 26 Apr.

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S&S Cycle Big Bore Cylinder Set With 4.250 Bore Without Highlighted Fins In Wrinkle Black For Harley Davidson 2017-2023 Touring M8 & 2018-2023 Softail M8 Models (910-0683)
S&S Cycle Big Bore Cylinder Set With 4.250 Bore Without Highlighted Fins In Wrinkle Black For Harley Davidson 2017-2023 Touring M8 & 2018-2023 Softail M8 Models (910-0683) $946.78
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 23 Apr and 26 Apr.

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S&S Cycle Big Bore Cylinder Set With 4.250 Bore With Highlighted Fins In Wrinkle Black For Harley Davidson 2017-2023 Touring M8 & 2018-2023 Softail M8 Models (910-0682)
S&S Cycle Big Bore Cylinder Set With 4.250 Bore With Highlighted Fins In Wrinkle Black For Harley Davidson 2017-2023 Touring M8 & 2018-2023 Softail M8 Models (910-0682) $946.78
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 23 Apr and 26 Apr.

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S&S Cycle 750CC Big Bore Kit For 2019-2021 Royal Enfield 650 Twin Models (920-0144)
S&S Cycle 750CC Big Bore Kit For 2019-2021 Royal Enfield 650 Twin Models (920-0144) $910.86
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 23 Apr and 26 Apr.

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S&S Cycle Hooligan Kit 883cc To 1200cc Conversion Kit In Wrinkle Black For Harley Davidson 2000-2022 Sportster Models (910-0699)
S&S Cycle Hooligan Kit 883cc To 1200cc Conversion Kit In Wrinkle Black For Harley Davidson 2000-2022 Sportster Models (910-0699) $1,744.83
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 23 Apr and 26 Apr.

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S&S 1200-1250 Hooligan Big Bore Cylinder & Piston Kit in Silver Finish For 2000-2022 XL1200 Models (910-0702)
S&S 1200-1250 Hooligan Big Bore Cylinder & Piston Kit in Silver Finish For 2000-2022 XL1200 Models (910-0702) $1,744.83
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 23 Apr and 26 Apr.

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S&S Cycle 95 Inch Big Bore Cylinder & Piston Kit In Wrinkle Black Powder Coat For Harley Davidson 1999-2006 Big Twin Models (910-0204)
S&S Cycle 95 Inch Big Bore Cylinder & Piston Kit In Silver For Harley Davidson 1999-2006 Big Twin Models (910-0200)
S&S Cycle 95 Inch Big Bore Cylinder & Piston Kit In Silver For Harley Davidson 1999-2006 Big Twin Models (910-0200) $1,343.66
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 23 Apr and 26 Apr.

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S&S Cycle 3-1/2 Inch Bore Cylinder & Piston Kit In Natural Finish For Harley Davidson 1984-1999 Big Twin Models (910-0179)
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