Description & Size Guide
8mm pitch. Without idler. Kickstart only. Comes as pulley & belt kit only. Stock clutch can be re-used. 61-41 drive ratio. Note: See 970974 for the replacement 1-1/2" wide 8mm 132t. + belt. Note: The difference in belts between 65-78 and 78-83 FL; FX models is due to a minor difference in primary housing length. Available belts are therefore designated as a - (minus; slightly shorter / MCS 506915) or + (plus; slightly longer / MCS 970974) belt; although the number of teeth is identical.
78-83 4-speed Big Twin (NU)
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