For Harley Davidson '98 to '17 Big Twin models with 6 Studs Style Clutch and Diaphragm Spring.
(except '13 and later Big Twin Model with A&S Clutch, 3 Studs Style)
H-D stock derby cover, 103" and 110" CVO Covers (except any special or '03 anniversary) are not required a derby cover spacer.
Non-stock derby cover (including any special or '03 anniversary cover) and 3 holes derby cover may require a derby cover spacer.The size of the displacement above is a just guideline to select VP clutch and spring. These numbers will be changed depend on motorcycle specifications.
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