How do I know this chain fits my saw?

Match three numbers: pitch, gauge, and drive-link count. All three must match the stamp on your current bar. If even one is off, the chain won't fit safely.

How do I measure pitch and gauge?

Pitch is the distance between any three consecutive rivets, divided by two. Gauge is the thickness of the drive links — measure with a caliper or check the bar stamp. Our guide covers both in detail.

How long does a replacement chain last?

With proper tension and occasional sharpening, an aftermarket chain lasts 3–5 cords of firewood or about 5 hours of active cutting — roughly the same as OEM.

Can I sharpen this chain or is it single-use?

Absolutely sharpen it. A quality replacement chain can be sharpened 3–5 times before the cutters are too short. Keep a round file matched to the cutter diameter.

2PC 20 Inch Chainsaw Chain Replacement

Name: 2PC 20 Inch Chainsaw Chain Replacement
Brand: OPULADUO
SKU: B0D7VTPS61
Price: 35.98 USD
Availability: InStock
Rating: 4.0 (1 reviews)

Overview

This chain is manufactured to OEM specs for EGO CS2000 / CS2005 20-Inch Chainsaw saws, providing dependable cutting performance as an aftermarket alternative. Bundled as 2 chains, giving you a ready spare. Swapping in a new chain is the single most effective maintenance step to keep your saw performing at its best.

Key specifications

Bar length: 20”
Quantity: 2 chains per pack

Compatibility

This chain is designed to fit EGO CS2000 / CS2005 20-Inch Chainsaw. Double-check your model number against the listing to ensure a correct match before installation.

Installation notes

Disconnect the spark plug wire or remove the battery before changing a chainsaw chain. Remove the bar cover, release bar tension, and take off the old chain. Place the new chain into the bar groove with the cutting teeth facing forward on top. Reinstall the cover, adjust chain tension until snug, and test by pulling the chain around the bar by hand. Re-check tension after a few minutes of use.

Common questions

Q: Will this 20-inch replacement chain fit both the EGO CS2000 and CS2005, or are the drive links different between those models?

Yes, this chain is made for the EGO CS2000 and CS2005 20-inch chainsaws, so it’s intended to match the stock 20-inch bar setup on both models. If you want to double-check before installing, compare your original chain’s specs and drive link count to your current chain or the markings in your saw’s manual.

Q: Do I need any special tools to install one of these chains on my EGO CS2000, and how tight should it be?

You typically just need to loosen the side cover, route the chain around the sprocket and bar, then adjust tension so the chain sits snugly against the bar but can still be pulled around by hand with gloves. After installation, run the saw briefly and recheck the tension, because a new chain will often stretch slightly during the first few cuts.

Q: Since this is a 2-pack of 20-inch chains, what maintenance should I do to help each chain last longer on my EGO CS2005?

Keep the chain properly tensioned, make sure bar oil is flowing correctly, and touch up the cutters regularly with the correct file instead of waiting until it gets very dull. It also helps to alternate between the two chains and inspect the bar groove and drive sprocket for wear each time you swap them.

Before you buy — how to verify fitment

Find the bar stamp. Look on the side of your current guide bar for the pitch, gauge, and drive-link count.
Match all three numbers. Pitch (3/8), gauge (.050"), and drive links (70DL) must all match.
Check bar length. Measure cutting length from the tip to where the bar enters the saw body — this should match 20".
Confirm your saw model against the compatibility list above. If your model isn't listed, the chain may still fit if pitch/gauge/DL match.