JINFFR 20-inch .325 pitch chainsaw chain 5-pack — .063 gauge, 81 drive links, chrome cutters

JINFFR's 5-pack of 20" .325" pitch, .063" gauge chains each with 81 drive links is a direct-fit replacement chain designed for many Stihl models and compatible Oregon/Husqvarna equivalents.

If your saw uses a 20-inch bar with a .325" pitch and a .063" (1.6mm) gauge, this set gives you five ready-to-install chains engineered for durability and consistent cutting performance. These chains are made from high-hardness steel with chrome-plated cutters and anti-corrosion surface treatment to stay sharp longer and resist wear. They replace common OEM numbers for Stihl and several third-party brands, but confirming pitch, gauge, bar length and drive link count on your guide bar or in the owner’s manual is essential before ordering.

How do I know this chain fits my saw?

Compatibility depends on four measurements: bar length, pitch, gauge and drive link count. Check the side of your guide bar or the owner's manual for markings, and confirm your sprocket type is compatible with a .325" pitch chain.

• Bar length: 20 inches
• Pitch: .325 inch
• Gauge: .063 inch (1.6 mm)
• Drive links: 81

What Stihl and aftermarket models will these chains work with?

These chains list compatibility with many Stihl saws and equivalent aftermarket part numbers. They are intended for models that accept a 20" bar and a .063" gauge chain; some Stihl saws ship with .050" bars, so verify the bar gauge before purchase.

• Common Stihl models: MS260, MS261, MS271, MS270, MS290, MS291, MS360, MS361 and related variants
• Replaces OEM references like MS271 Farm Boss guide part numbers shown in manuals
• Compatible aftermarket codes: Oregon L81, V81, 22LPX081G and similar

What performance and material features should I expect?

The chains are produced from treated German steel with chrome-plated cutting teeth to improve edge life and reduce friction. The construction emphasizes hardness and corrosion resistance and is intended for general-purpose cutting tasks rather than specialized milling or ripping duties.

• High-hardness steel cutters with chrome plating for longer edge retention
• Rust-resistant surface treatment and oil-friendly design
• Balanced for smooth feed and consistent cutting performance

How do I install and maintain these chains for best life?

Installation follows standard chainsaw chain fit procedures: stop the saw, release tension, loop the chain around the bar and sprocket then re-tension per manufacturer specs. Regular sharpening, correct tension, and proper lubrication extend life and maintain cutting efficiency.

• Always match tension to the guide bar manufacturer’s recommendation
• Sharpen cutters at manufacturer intervals and file depth gauges as needed
• Use appropriate bar oil and inspect sprocket/guide bar wear frequently

Who is this for? This five-chain pack is best for homeowners, arborists, landscapers and small-crew contractors who use 20" bars and need multiple spare chains for frequent cutting jobs. It’s a cost-effective option for those who service several saws or want to keep replacement chains on hand to minimize downtime, provided the saw’s pitch and gauge match .325"/.063" with 81 drive links.