Cylinder Sleeve for Sea-Doo Spark 90 3Up 900 2021-2026

Cylinder Sleeve for Sea-Doo

This cylinder sleeve restores cylinder bore geometry on 900 ACE engine rebuilds for Sea-Doo Spark 90 3Up models, giving worn or scored cylinders a fresh, true running surface.

Overview

This cylinder sleeve is a replacement cylinder liner made for Sea-Doo Spark 90 3Up 900 machines from 2021 through 2026. It presses into the crankcase to renew the bore when the original cylinder is scored, out of round, or worn past spec. It is built for riders and shops doing top end or full engine rebuilds who want the cylinder sleeve to match factory bore dimensions.

Built For Performance

• Precision machined bore for consistent piston-to-wall clearance
• Constructed from durable cast iron for long service life
• Designed to press into the stock crankcase bore
• Restores worn or damaged cylinder surfaces during rebuilds
• Suited to the 900 ACE three-cylinder engine platform

Fits These Machines

• for Sea-Doo Spark 90 3Up 900, 2021
• for Sea-Doo Spark 90 3Up 900, 2022
• for Sea-Doo Spark 90 3Up 900, 2023
• for Sea-Doo Spark 90 3Up 900, 2024
• for Sea-Doo Spark 90 3Up 900, 2025
• for Sea-Doo Spark 90 3Up 900, 2026

On-The-Job Use

• Top end rebuilds after piston or ring failure
• Cylinder repair when the bore is scored or out of round
• Shop engine overhauls on 900 ACE powered watercraft
• Refreshing a high-hour engine before the riding season

Specs At A Glance

Good To Know

Q: Does this sleeve need to be machined after installation? A: Yes, a cylinder sleeve is normally pressed in and then honed or bored to final size so the piston clearance matches spec.

Q: Can I install this without splitting the engine? A: Sleeve replacement generally requires removing the cylinder for pressing and machining, so plan for a full top end teardown.

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