The new dampener series includes thicker bushing and upgraded washers under the fastening bolts. RIVA now offers 3 different dampener solutions


This one features the new OEM 2013 spec Yamaha clutch system and comes with the matching 2013 spec RIVA dampener
RIVA FX-SHO/FZ Supercharger Gear Dampener/OEM Clutch Kit (2013 Specs)

Kit includes OEM 57 tooth clutch (part #6S5-17800-20-00) and RIVA Gear Dampener (part#RY17040-SGD-6S5-20). This is an excellent value for those...
RY17040-DCK-6S5 $999.95

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This Dampener is for the following applications
`12 & Newer FZR starting with Primary ID # F2R806401
`12 & Newer FZS starting with Primary ID # F2C808501
`12 & Newer FX SHO starting with Primary ID # F2S803101
Compatible with 57 tooth Yamaha clutch part# 6S5-17800-20-00.
RIVA FX-SHO/FZ Supercharger Gear Dampener (18 tooth)

Our damper unit is designed to protect gear teeth & sprag clutch on supercharger drive system. Dampener features innovative cushioning mechanism that...
RY17040-SGD-6S5-20 $699.95

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This Dampener is for the following applications (older style clutch systems)
RIVA FX-SHO/FZ Supercharger Gear Dampener (19 tooth)

Our damper unit is designed to protect gear teeth & sprag clutch on supercharger drive system. Dampener features innovative cushioning mechanism that...
RY17040-SGD-6S5 $499.95

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All Dampeners now come with the thicker bushing and upgraded washers under the fastening bolts