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...

Genuine Sea Doo 4-tec PTO housing gasket. Fits all SeaDoo 4-Tec Engines...

This kit contains genuine Sea Doo bearings for the 300hp engines. The kit consists of the following components 4 x 420933466 Plain Bearing Half 4 x 420933456 Plain Bearing Half 2 x 420933475 Ring Half 4 x 420933442 Plain Bearing Half 2 x 420933470 Ring Half 6 x 420933523 Plain Bearing...

This kit contains genuine Sea Doo bearings for the 4-Tec engines. The kit consists of the following components 4 x 420933466 Plain Bearing Half 4 x 420933456 Plain Bearing Half 2 x 420933475 Ring Half 4 x 420933442 Plain Bearing Half 2 x 420933470 Ring Half 6 x 420933523 Plain Bearing...

OEM SEA-DOO 420898042 CAMSHAFT CHAIN Original OEM SEA DOO Camshaft Chain. This OEM part 420898042 supersedes and replaces 420898040 and 420898044....

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

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A must have for any engine re-build as main studs must be replaced any time they are removed from the engine. Kit includes 8 x 420641120...

Our block guards have been meticulously designed and are CNC machined out of as solid block of lightweight T6 6061 aircraft grade aluminum. The block guard's function is to support and eliminate flex in the cylinder walls. Our block guards feature cooling ports to allow proper coolant flow through t...

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Calas Performance Seadoo custom OEM camshaft gear has been lightened by drilling 8 holes resulting in less rotational mass and more acceleration and power. It is excellent for recreational application....

Calas Performance OEM Seadoo Factory Flywheel "Starter Double Gear" has been lightened and balanced resulting in less rotational mass for increased acceleration and horsepower. It is excellent for recreational application....

Calas Performance OEM Seadoo Factory Flywheel "Starter Double Gear" has been lightened and balanced resulting in less rotational mass for increased acceleration and horsepower. It is excellent for recreational application....

Calas Performance OEM Seadoo Factory Flywheel "Starter Double Gear" has been lightened and balanced resulting in less rotational mass for increased acceleration and horsepower. It is excellent for recreational application....

Calas Performance Seadoo OEM Magneto Flywheel has been lightened resulting in less rotational mass and more acceleration and power....

Calas Performance OEM Seadoo Factory Flywheel "Starter Double Gear" for Turbo application. It has been lightened and balanced by removing the supercharger gear ring, resulting in less rotational mass along with increased acceleration and horsepower....

The RIVA Racing Sea-Doo iDF Delete Kit directly replaces the iDF system which is prone to premature failure on modified craft operated above 8,400rpm. Complete kit is composed of OEM engine & driveline components, backdating them to non-iDF specification for improved reliability. This allows for mod...