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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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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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Harley Davidson Cylinder Bolts

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Showing 1 to 50 of 138 products in this section.
Streethog Cylinder Head/Base Nut 7/16-20; high Torque Style, Provides Extra Clearance For Big Bore Cylinders Fits Stock Bore As Well in Stainless Steel For 1936-1984 B.T. Models (ARM773009)
Streethog Cylinder Head/Base Nut 7/16-20; high Torque Style, Provides Extra Clearance For Big Bore Cylinders Fits Stock Bore As Well in Stainless Steel For 1936-1984 B.T. Models (ARM773009) £9.54 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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Colony Cylinder Base Nut Kit, High-Torque No Washers, Provides Extra Space For Big Bore Cylinders But Fits Stock Bore Equally Well in Chrome Finish For 1936-1984 B.T. Models (ARM087105)
Colony Cylinder Base Nut Kit, High-Torque No Washers, Provides Extra Space For Big Bore Cylinders But Fits Stock Bore Equally Well in Chrome Finish For 1936-1984 B.T. Models (ARM087105) £34.07 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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Colony Cylinder Base Nut Kit Acorn in Chrome Finish For 1957-1985 XL, 1929-1973 45 Inch SV Models (ARM811989)
Colony Cylinder Base Nut Kit Acorn in Chrome Finish For 1957-1985 XL, 1929-1973 45 Inch SV Models (ARM811989) £21.28 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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S&S Cylinder Stud Set For Late 1985-1999 Evo B.T. & S&S Evo Crankcases Models (31-2321)
S&S Cylinder Stud Set For Late 1985-1999 Evo B.T. & S&S Evo Crankcases Models (31-2321) £55.06 inc.VAT
  UK stock

In stock

All orders are shipped out of our UK premises. Estimated shipping date 2 Dec.

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Colony Cylinder Head Bolt Kit 12 Point Domed Heads in Chrome Finish For Late 1985-1991 B.T., 1986-1991 XL Models (ARM995989)
Colony Cylinder Head Bolt Kit 12 Point Domed Heads in Chrome Finish For Late 1985-1991 B.T., 1986-1991 XL Models (ARM995989) £115.70 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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Colony Cylinder Base Nut Kit Hex In Chrome Finish For 1930-1978 B.T. Models (ARM982315)
Colony Head Bolt Kit OEM Style Including Washers in Zinc Finish For 1973-1985 XL Models (ARM918929)
Colony Head Bolt Kit OEM Style Including Washers in Zinc Finish For 1973-1985 XL Models (ARM918929) £42.04 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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Colony Head Bolt Kit 12 Point Including Washers in Chrome Finish For 1948-1984 Pan, Shovel Models (ARM336989)
Colony Head Bolt Kit 12 Point Including Washers in Chrome Finish For 1948-1984 Pan, Shovel Models (ARM336989) £54.80 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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Colony Cylinder Head Bolt Kit 12 Point Domed Head in Chrome Finish For 1992-2017 B.T. (Excluding M8), 1992-2022 XL, 2008-2012 XR1200 Models (ARM006989)
Colony Cylinder Base Nut Kit Hex in Parkerized Finish For 1957-1985 XL, 1929-1973 45 Inch SV Models (ARM421989)
Colony Cylinder Base Nut Kit Hex in Parkerized Finish For 1957-1985 XL, 1929-1973 45 Inch SV Models (ARM421989) £15.26 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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Gardner Westcott Head Bolt Kit 12 Point Stock & Big Bore in Chrome Finish For 1948-1984 B.T. Models (ARM786415)
Gardner Westcott Cylinder Base Nut Kit, Hex in Zinc Finish For 1957-1985 XL, 1929-1973 45 Inch SV Models (ARM663305)
Gardner Westcott Cylinder Base Nut Kit, Hex in Zinc Finish For 1957-1985 XL, 1929-1973 45 Inch SV Models (ARM663305) £10.73 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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Colony Head Bolt Kit OEM Style Cast Iron Heads in Parkerized Finish For 1937-1948 74/80 Inch SV B.T., 1929-1950 45 Inch SV Models (ARM916989)
Colony Head Bolt Kit OEM Style Cast Iron Heads in Parkerized Finish For 1937-1948 74/80 Inch SV B.T., 1929-1950 45 Inch SV Models (ARM916989) £91.91 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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Colony Head Bolt Kit OEM Style Including Washers in Chrome Finish For 1948-1984 Pan, Shovel Models (ARM406989)
Colony Head Bolt Kit OEM Style Including Washers in Chrome Finish For 1948-1984 Pan, Shovel Models (ARM406989) £73.78 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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Colony Cylinder Base Spacers in Chrome Finish For 1979-1984 1340CC B.T. Models (ARM014315)
Colony Head Bolt Kit OEM Style in Parkerized Finish For 1939-1973 45 Inch SV With Alu Heads Models (ARM226989)
Colony Head Bolt Kit OEM Style in Parkerized Finish For 1939-1973 45 Inch SV With Alu Heads Models (ARM226989) £83.96 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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Colony Cylinder Base Stud Set 8-Pack For 1930-1977 B.T. Models (ARM002929)
Colony Cylinder Base Stud Set 8-Pack For 1930-1977 B.T. Models (ARM002929) £36.98 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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Colony Cylinder Base Nut Kit Hex in Parkerized Finish For 1930-1978 B.T. Models (ARM801989)
Colony Cylinder Base Nut Kit Hex in Parkerized Finish For 1930-1978 B.T. Models (ARM801989) £17.29 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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S&S Head Bolt Kit in Black Oxide Coating Finish For 2018-2023 Softail & 2017-2023 Touring, Trikes Models (900-1006)
S&S Head Bolt Kit in Black Oxide Coating Finish For 2018-2023 Softail & 2017-2023 Touring, Trikes Models (900-1006) £160.52 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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Colony Head Bolt Kit 12 Point Including Washers in Black Oxide Finish For 1948-1984 Pan, Shovel Models (ARM436989)
Colony Head Bolt Kit 12 Point Including Washers in Black Oxide Finish For 1948-1984 Pan, Shovel Models (ARM436989) £44.74 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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Colony Cylinder Head Bolt Kit 12 Point Domed Head, External Thread in Chrome Finish For Early 1984 - Late 1985 B.T. Models (ARM895989)
Colony Cylinder Head Bolt Kit 12 Point Domed Head, External Thread in Chrome Finish For Early 1984 - Late 1985 B.T. Models (ARM895989) £31.43 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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Colony Cylinder Base Studs 8x 3/8-16 To 3/8-24 x 1 13/16 Inch Stud For 1930-1973 45 Inch SV (Cylinder Base); 1965-1969 B.T. Models (ARM121179)
Colony Cylinder Base Studs 8x 3/8-16 To 3/8-24 x 1 13/16 Inch Stud For 1930-1973 45 Inch SV (Cylinder Base); 1965-1969 B.T. Models (ARM121179) £14.53 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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Colony Cylinder Base Nut Kit Hex Flanged in Chrome Finish For 1979-1984 1340CC B.T. Models (ARM311989)
S&S Cylinder Stud Set For 1999-2017 TCA/B Models (31-2340)
S&S Cylinder Stud Set For 1999-2017 TCA/B Models (31-2340) £92.33 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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Colony Cylinder Base Nut Kit High-Torque in Black Finish For 1957-1985 XL, 1929-1973 45 Inch SV Models (ARM021989)
Colony Cylinder Base Nut Kit High-Torque in Black Finish For 1957-1985 XL, 1929-1973 45 Inch SV Models (ARM021989) £29.68 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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Colony Cylinder Base Nut Kit Cap Style in Chrome Finish For 1930-1978 B.T. Models (ARM011989)
Colony Cylinder Base Nut Kit Cap Style in Chrome Finish For 1930-1978 B.T. Models (ARM011989) £23.47 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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Colony 45 Inch Cylinder Head Nut Kit With Cast Iron Heads in Parkerized Finish For 1929-1941 45 Inch SV, 1926-1932 Single Cylinder Models (ARM872099)
Colony 45 Inch Cylinder Head Nut Kit With Cast Iron Heads in Parkerized Finish For 1929-1941 45 Inch SV, 1926-1932 Single Cylinder Models (ARM872099) £42.32 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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Colony Cylinder Base Nut Kit 'High Torque' No Washers, Provides Extra Space For Big Bore Cylinders But Fits Stock Bore Cylinders Equally Well in Black Oxide Finish For 1936-1984 B.T. Models (ARM675079)
Colony Cylinder Base Nut Kit 'High Torque' No Washers, Provides Extra Space For Big Bore Cylinders But Fits Stock Bore Cylinders Equally Well in Black Oxide Finish For 1936-1984 B.T. Models (ARM675079) £29.92 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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S&S Cylinder Stud Set 8 Used in One Engine For 1986-2017 XL, 2008-2012 XR1200, S&S 100/107/113 Inch 4 Inch Bore Evo Engines Models (31-2331)
S&S Cylinder Stud Set 8 Used in One Engine For 1986-2017 XL, 2008-2012 XR1200, S&S 100/107/113 Inch 4 Inch Bore Evo Engines Models (31-2331) £71.76 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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Colony 45 Inch Cylinder Head Nut Kit in Zinc Finish For 1942-1950 45 Inch SV With Cast Iron Heads Models (ARM598929)
Colony 45 Inch Cylinder Head Nut Kit in Zinc Finish For 1942-1950 45 Inch SV With Cast Iron Heads Models (ARM598929) £42.32 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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Colony 45 Inch Cylinder Head Stud Kit in Parkerized Finish For 1929-1950 45 Inch SV With Cast Iron Heads (ARM772099)
Colony 45 Inch Cylinder Head Stud Kit in Parkerized Finish For 1929-1950 45 Inch SV With Cast Iron Heads (ARM772099) £58.55 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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Colony Cylinder Base Lockwashers 7/16 in Chrome Finish For 1930-1978 OHV & SV B.T., 1957-1986 XL Models (ARM521989)
Colony Cylinder Base Lockwashers 7/16 in Chrome Finish For 1930-1978 OHV & SV B.T., 1957-1986 XL Models (ARM521989) £7.03 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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Colony Cylinder Base Lockwashers 7/16 in Parkerized Finish For 1930-1978 OHV & SV B.T., 1957-1986 XL Models (ARM721989)
Colony Cylinder Base Lockwashers 7/16 in Parkerized Finish For 1930-1978 OHV & SV B.T., 1957-1986 XL Models (ARM721989) £5.47 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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Colony Cylinder Base Lockwashers 7/16 in Zinc Finish For 1930-1978 OHV & SV B.T., 1957-1986 XL Models (ARM396929)
Colony Cylinder Base Nut Kit Acorn in Chrome Finish For 1930-1978 B.T. Models (ARM901989)
Colony Cylinder Base Nut Kit Acorn in Chrome Finish For 1930-1978 B.T. Models (ARM901989) £23.47 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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Colony Cylinder Base Nut Kit Acorn Milled Hex Without Washers in Chrome Finish For 1978-1984 B.T. Models (ARM541315)
Colony Cylinder Base Nut Kit Acorn Milled Hex Without Washers in Chrome Finish For 1978-1984 B.T. Models (ARM541315) £27.23 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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Colony Cylinder Base Nut Kit Cap Style in Chrome Finish For 1957-1985 XL, 1929-1973 45 Inch SV Models (ARM121989)
Colony Cylinder Base Nut Kit Cap Style in Chrome Finish For 1957-1985 XL, 1929-1973 45 Inch SV Models (ARM121989) £21.28 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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Colony Cylinder Base Nut Kit Hex Acorn Cap in Chrome Finish For 1979-1984 1340CC B.T. Models (ARM211989)
Colony Cylinder Base Nut Kit Hex Acorn Cap in Chrome Finish For 1979-1984 1340CC B.T. Models (ARM211989) £27.23 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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Colony Cylinder Base Nut Kit Hex Flanged in Black Parkerized Finish For 1979-1984 1340CC B.T. Models (ARM511989)
Colony Cylinder Base Nut Kit Hex Flanged in Black Parkerized Finish For 1979-1984 1340CC B.T. Models (ARM511989) £18.52 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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Colony Cylinder base Nut Kit Hex Flanged in Zinc Finish For 1979-1984 1340CC B.T. Models (ARM196929)
Colony Cylinder Base Nut Kit Hex in Chrome Finish For 1957-1985 XL, 1929-1973 45 Inch SV Models (ARM221989)
Colony Cylinder Base Nut Kit Hex in Chrome Finish For 1957-1985 XL, 1929-1973 45 Inch SV Models (ARM221989) £22.20 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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Colony Cylinder Base Nut Kit Hex in Zinc Finish For 1930-1978 B.T. Models (ARM096929)
Colony Cylinder Base Nut Kit Hex in Zinc Finish For 1930-1978 B.T. Models (ARM096929) £17.29 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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Colony Cylinder Base Nut Kit Hex in Zinc Finish For 1957-1985 XL, 1929-1973 45 Inch SV Models (ARM296929)
Colony Cylinder Base Nut Kit Hex in Zinc Finish For 1957-1985 XL, 1929-1973 45 Inch SV Models (ARM296929) £15.26 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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Colony Cylinder Base Nut Kit, High Torque in Chrome Finish For 1952-1985 K, XL, 45 Inch Flathead Models (ARM040315)
Colony Cylinder Base Nut Kit, High Torque in Chrome Finish For 1952-1985 K, XL, 45 Inch Flathead Models (ARM040315) £33.91 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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Colony Cylinder Base Spacers in Black Oxide Models For 1979-1984 1340CC B.T. Models (ARM114315)
Colony Cylinder Base Spacers in Black Oxide Models For 1979-1984 1340CC B.T. Models (ARM114315) £19.21 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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Colony Cylinder Base Stud Set 8 Studs Used in One Engine For 1999-2017 TCA/B Models (ARM031989)
Colony Cylinder Base Stud Set 8 Studs Used in One Engine For 1999-2017 TCA/B Models (ARM031989) £85.88 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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Colony Cylinder Stud Set (Pack of 8) For Late 1985-1999 Evo B.T. Models (ARM821989)
Colony Cylinder Stud Set (Pack of 8) For Late 1985-1999 Evo B.T. Models (ARM821989) £85.88 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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Colony Cylinder Stud Set For 1986-2022 XL, 2008-2012 XR1200, S&S 100/107/113 Inch 4 Inch Bore Evo Engines Models (ARM921989)
Colony Cylinder Stud Set For 1986-2022 XL, 2008-2012 XR1200, S&S 100/107/113 Inch 4 Inch Bore Evo Engines Models (ARM921989) £85.88 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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Colony Head Bolt Kit Acorn Style For 1936-1939 Knucklehead Models (ARM440929)
Colony Head Bolt Kit Acorn Style For 1936-1939 Knucklehead Models (ARM440929) £56.89 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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Colony Head Bolt Kit Acorn Style For 1940-1947 Knucklehead Models (ARM540929)
Colony Head Bolt Kit Acorn Style For 1940-1947 Knucklehead Models (ARM540929) £56.89 inc.VAT
  EU stock

Usually ships in 2-5 business days

All orders are shipped out of our UK premises. Estimated shipping date between 3 Dec and 6 Dec.

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