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Yamaha Crankcase Components

RIVA Pro-Series Flywheel Bolt Kit

RY10840-FWB-YAM

The RIVA Flywheel Bolt Upgrade Kit is a high strength bolt kit directly replaces OEM flywheel bolts that are prone to shearing off on modified Sea-Doo 1503/1630 & Yamaha 1.8 liter engines. Superior materials and design improve durability under high stress conditions. An essential upgrade for reliabl...

  • $29.95
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    RIVA Pro-Series Flywheel Bolt Kit

  • $29.95
  • RIVA Yamaha Crankcase Repair Thrust Plate

    RY10040-TB-OIB125

    Some failures on the Yamaha 1.8L engines involve the crankshaft being pushed forward in the engine. This can be caused by a number of reasons. Some may include: drive coupler coming loose. The PTO transfer shaft coming loose. The nut on the end of the pump driveshaft coming loose. Thes...

  • $59.95
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    RIVA Yamaha Crankcase Repair Thrust Plate

  • $59.95
  • ARP / RIVA Yamaha Pro-Series Crankcase Main Stud Kits

    RY10840-CMSK-1LB

    Our ultra high strength crankcase main stud kit is essential equipment when upgrading internal components on your high boost Yamaha engine. Precision machined from premium grade 8740 alloy and heat treated to exacting tolerances, these studs dramatically increase reliability & ease of maintenance. ...

  • $199.95
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    ARP / RIVA Yamaha Pro-Series Crankcase Main Stud Kits

  • $199.95