- 1999–'11 Big Twin
- 3-3/4, 3-7/8, and 3.927 Inch Bore Cylinders
- 3.987" ID X 4.193" OD
- Viton
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- For Early S&S 4 Inch Bore Cylinders
- 4.237" ID X 4.443" OD
- Viton
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- 3/8-16 X 6.070" length, .050" above case deck
- Black steel, set of 8
- 1999 - up big twin
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- For 1984Up Big Twins & 19862003 Sportster®
- Fits S&S Head Bolts Only
- Set of Four
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- 12 pt Head Bolt Kit
- Bolt lengths w/ washers are 3.284" and 1.840"
- 1984 - up big twin and 1986 - 2003 xl
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- 12 pt Head Bolt Kit
- Bolt length w/ washer is 3.284" (93-3030)
- 8 pack, S&S Heads
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- 12 pt Head Bolt Kit
- Bolt lengths w/ washers are 3.501" and 2.220"
- 1984–up big twin and 1986–2003 xl
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- 12 pt Head Bolt Kit
- Bolt lengths w/ washers are 3.284" and 2.070"
- 1984 - up big twin and 1986 - 2003 xl
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- 3/8-16 X 1.940"
- .100 Washer Thickness
- 12 pt
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- 3/8-16 X 2.470"
- .100 Washer Thickness
- 12 pt
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- 3/8-16 X 3.751"
- .250 Washer Thickness
- 12 pt
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- 3/8-16 X 3.751"
- .100 Washer Thickness
- 12 pt
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- 3-3/4, 3-7/8, and 3.927 Inch Bore Cylinders
- 3.987" ID X 4.193" OD
- Viton
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- 3/8-16 X 2.170"
- .100 Washer Thickness
- 12 pt
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- 3/8-16 X 2.470" /li>
- .250 Washer Thickness
- 12 pt
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- 3/8-16 X 3.384" head bolt with washer
- .100 washer thickness
- 12 pt
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- .1999–'11 Big Twins
- .437" ID X .565" OD
- Viton
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- .515" x 1" x .250"
- Flat
- Steel
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- .515" x 1" x .100"
- Flat
- Steel
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