309 Machine Billet Exhaust Port – ECHO CS-620P / CS-590 Timber Wolf

A CNC-machined billet aluminum exhaust outlet for the ECHO CS-620P and CS-590. Bolts onto the factory muffler with stock hardware — no muffler modification required — and works with the factory spark arrestor.

The stock stamped-steel outlet on the ECHO 620 and 590 is one of the biggest restrictions on these saws. We designed and machined this billet exhaust port in-house at 309 Machine to fix that. It gives the saw a larger, directed outlet that lets the engine breathe while keeping exhaust aimed away from the operator.

Each port is machined from solid 6061 aluminum on our 5-axis machine, then black anodized and laser-engraved. It's made to look like it came on the saw, not like it was added later.

It's a true bolt-on. It uses your factory hardware, needs no cutting or drilling on the muffler, and keeps the factory spark arrestor screen in place. Pair it with baffle removal if you want even more flow.

Features

• CNC-machined from solid 6061 billet aluminum — not cast or stamped
• Replaces the factory stamped-steel deflector
• Black anodized finish for corrosion and heat resistance
• Directed outlet keeps exhaust flowing away from the operator
• Works with the factory spark arrestor screen
• Bolts on with factory hardware, no muffler modification required
• Compatible with baffle removal for additional flow
• Designed and made in the USA

Fitment

• ECHO CS-620P
• ECHO CS-590 Timber Wolf

What's Included

• (1) 309 billet exhaust port (reuses your factory mounting hardware)

Installation & Tuning

Remove the factory outlet cover, set the 309 Machine port in place over the spark arrestor screen, and reinstall the factory screws. Because the saw will flow more air, check your carb tune after installing — especially if you also remove the baffles. We recommend having your carburetor adjusted to avoid running lean.

For off-road / professional use. Check your local spark arrestor and emissions requirements. 309 Machine is not affiliated with or endorsed by ECHO Inc. "ECHO" is used only to describe compatibility.