Description

Sea-Doo RXT 255 Long Block Engine Rebuild Service (2008)

The 2008 Sea-Doo RXT 255 long block is built to handle strong acceleration, boosted performance, and demanding water use. However, when internal wear starts to build up, you may notice rough starts, weaker throttle response, leaks, or performance that feels uneven under load.

At REV6, we tear your long block down completely, inspect every major component, and rebuild it with refreshed internals and corrected clearances. As a result, your RXT 255 gets a stronger foundation for smooth operation and dependable water-ready performance.

Long Block Engine Only

This listing is for a long block engine rebuild service. External accessories, exhaust parts, fuel-related components, electrical parts, sensors, and other bolt-on items are not included.

If you are unsure whether you need a short block, long block, or full engine rebuild, contact our team before ordering and we’ll help you get pointed in the right direction.

Core Requirement

Core required: A rebuildable Sea-Doo RXT 255 long block core must be supplied for this service. Your rebuild begins once we receive your engine and complete the initial inspection.

After your order is placed, we’ll send a prepaid shipping label and coordinate pickup. Before shipping, remove your exhaust, fuel-related components, electrical parts, sensors, and external accessories. After that, we handle the teardown, rebuild, inspection, and return shipping.

For step-by-step instructions, visit our Help Center.

If you want to spread out the cost, check out our flexible payment options to keep your rebuild moving.

What’s Included in the Long Block Rebuild

• Standard 1-year warranty with optional 2-year no-fault upgrade
• Full inspection of engine core
• Crankcase assembly inspected
• Crankshaft assembly inspected and rebuilt
• New high-babbitt crankshaft bearings installed
• Cylinders bored and honed to the next oversize or re-sleeved as needed
• New pistons, rings, and wrist pins installed
• Cylinder head rebuilt and resurfaced
• Valve guides inspected and replaced as needed
• Valves and seats recut and vacuum tested for proper sealing
• Camshaft cleaned, inspected, and polished
• Mating surfaces decked and resurfaced for a tight seal
• Timing chain inspected and replaced when needed
• New gaskets and oil seals throughout
• All bearings cleaned, inspected, and replaced as needed
• Assembly completed by a master technician with Sea-Doo experience
• Final inspection before shipment
• Double inspection guarantee — one technician builds, another checks

Note: Final build details depend on your engine’s condition.

Built for RXT 255 Boosted Performance

The RXT 255 needs clean starts, strong sealing, healthy bearings, and accurate internal clearances to handle boosted power the right way. Because of that, we focus on crankshaft condition, piston fitment, valve sealing, cylinder finish, gasket integrity, and case health throughout the rebuild.

In turn, your rebuilt long block delivers smoother operation, cleaner acceleration, and steady performance when your Sea-Doo is back on the water.

Turnaround Time

Typical turnaround time is about 2 weeks after your engine core arrives, depending on the condition of your core and parts availability.

Warranty & Support

Every rebuild includes a 1-year warranty. In addition, you can upgrade to a 2-year no-fault plan for extra protection.

Review coverage in our warranty policy, browse answers in our FAQ, or contact our team before ordering.

For first-start guidance, follow our engine break-in procedure. You can also visit the REV6 Blog or watch rebuild content on our YouTube channel.

Looking at Other Repair Options?

If you are comparing a short block, long block, full engine rebuild, or parts kit, our Engine Rebuild Kit Guide can help you understand what fits your repair best.

Take Action

If your 2008 Sea-Doo RXT 255 long block is starting rough, leaking, losing response, or showing signs of internal wear, now’s the time to rebuild it the right way.

Get back on the water with smooth acceleration, steady performance, and confidence in your rebuilt long block.

We proudly support veterans and active servicemembers with available discounts—thank you for your service.