Crankshaft Assembly for Sea-Doo Speedster 720 1996-1999

Crankshaft Assembly for Sea-Doo

The crankshaft assembly for Sea-Doo Speedster 720 converts the up-and-down motion of the pistons into rotating power, serving as the core of the engine in 1996-1999 models.

Overview

This crankshaft assembly for Sea-Doo is the central rotating component of the engine, translating piston movement into usable power for the driveline. It is built to handle the loads and rpm of a 720 engine used in the Speedster. It suits owners rebuilding or replacing a worn crank in a 1996-1999 Speedster.

Built For Performance

• Balanced rotating assembly for smooth engine operation
• Sturdy construction to withstand high-rpm marine use
• Designed to accept connecting rods and bearings for a 720 engine
• Machined journals for consistent bearing contact
• Built for two-stroke personal watercraft and jet boat applications

Fits These Machines

• for Sea-Doo Speedster 720, 1996-1999

On-The-Job Use

• Bottom-end engine rebuilds
• Replacing a seized or damaged crank
• Restoring a jet boat or personal watercraft engine
• Full engine overhaul projects

Specs At A Glance

Good To Know

Q: When should a crankshaft assembly be replaced? A: It is typically replaced when the bottom end shows bearing wear, rod play, or seizure. A rebuild with a new crank helps restore reliable engine operation.

Q: Does this fit other engines? A: This assembly is listed for the Sea-Doo Speedster 720 from 1996-1999. Confirm your model and serial number before ordering.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.