Bore and Stroke
Displacement Engine Bore Stroke
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45CI 750cc K, WL & G models 2 3/4" 3 13/16"
46CI 750cc XG Street 3.350" 2.600"
54CI 883cc XL Sportster 3" 3 13/16"
54CI 900cc XL Sportster 3" 3 13/16"
54CI 900cc KH models 3" 3 13/16"
60CI 984cc 2003-2009 Buell XB9 3 1/2" 3 1/8"
61CI 1,000cc XL Sportster 3 3/16" 3 13/16"
74CI 1,100cc XL Sportster 3.350" 3 13/16"
74CI 1,200cc XL Sportster 3 1/2" 3 13/16"
74CI 1,200cc 1994-2002 & 2003-2010 XB12 Buell 3 1/2" 3 13/16"
69CI 1,130cc 2002-2007 V-Rod 3 15/16" 2.835"
76CI 1,250cc 2008-2017 V-Rod 4.134" 2.835"
100CI 1,647cc S&S X100 4" 4"
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Big Twin Displacement Engine Bore Stroke
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61CI 1,000cc 1936-1947 Knucklehead 3 5/16" 3 1/2"
74CI 1,200cc 1930-1948 Flathead 3 5/16" 4 9/32"
74CI 1,200cc 1948-1965 Panhead 3 7/16" 3 31/32"
74CI 1,200cc 1966-1977 Shovelhead 3 7/16" 3 11/32"
80CI 1,300cc 1940-1948 Flathead 3 27/64" 4 9/32"
80CI 1,340cc 1978-1984 Shovelhead 3 1/2" 4 1/4"
80CI 1,340cc 1984-2000 Evolution 3 1/2" 4 1/4"
93CI 1,530cc S&S KN93, P93, SH93 3 5/8" 4 1/2"
96CI 1,575cc S&S V96 3 5/8" 4 5/8"
103CI 1,691cc S&S P103, SH103 3 5/8" 5"
107CI 1,754cc S&S V107 4" 4 1/4"
111CI 1,807cc S&S V111 4 1/8" 4 1/8"
113CI 1,852cc S&S V113 4" 4 5/8"
124CI 2,035cc S&S V124 4 1/8" 4 5/8"
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Twin Cam Displacement Engine Bore Stroke
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88CI 1,450cc 1999-2006 3 3/4" 4"
95CI 1.557cc 2000-2004 3 7/8" 4"
96CI 1,573cc 2007-2017 3 3/4" 4 3/8"
103CI 1,690cc 2005-2017 3 7/8" 4 3/8"
110CI 1,803cc 2007-2017 4" 4 3/8"
111CI 1,807cc S&S T111 4 1/8" 4 1/8"
120CI 1,967cc 2011-2017 120R 4 1/16" 4 5/8"
124CI 2,026cc S&S T124 4 1/8" 4 5/8"
143CI 2,231cc S&S T143 4.425" 4 5/8"
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M8 Displacement Engine Bore Stroke
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107CI 1,753cc 2017-up 3 15/16" 4 3/8"
114CI 1,868cc 2017-up 4 1/64" 4 1/2"
117CI 1,917cc 2018-up 4 5/64" 4 1/2"
124CI 2,035cc 107CI with S&S BigBore kit 4 1/4" 4 3/8"
128CI 2,100cc 114 or 117 with S&S BigBore kit 4 1/4" 4 1/2"
131CI, 2149cc 114 or 117 with SE stage V kit 4,31" 4 1/2"
131CI, 2149cc S&S 107 or 114 or 117 with 4 1/4" 4 5/8"
143cI, 2343cc. Any M8 4 1/2" 4 1/2"
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Revolution Max Displacement Engine Bore Stroke
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76CI 1,246cc 2021-up 4.13" 2.83"