Description
STIHL 3689 005 0081 Chainsaw Chain – 20" Bar | .325" Pitch | .063" Gauge | 81 Drive Links – 26RM3 (Rapid Micro 3)
The STIHL 3689 005 0081 is a professional-grade Rapid Micro 3 (26RM3) chainsaw chain, built for reliable and smooth performance in both forestry and property maintenance. This chain features a .325" pitch, .063" gauge, and 81 drive links, specifically designed to fit 20-inch guide bars on mid- to high-powered STIHL chainsaws.
With its semi-chisel cutter design, the 26RM3 strikes a perfect balance between fast cutting and edge durability — especially in dirty or frozen wood. The built-in low-kickback features make it ideal for professionals and advanced users seeking a safer but powerful option.
🔧 Product Specifications:
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OEM Part Number: 3689 005 0081
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Chain Type: 26RM3 – Rapid Micro 3 (Semi-Chisel, Low-Kickback)
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Pitch: .325"
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Gauge: .063" (1.6 mm)
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Drive Links: 81
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Recommended Bar Length: 20 inch (50 cm)
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Cutter Type: Semi-chisel – rounded corners for longer edge retention
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Oilomatic® Lubrication System: Yes
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Low Kickback: Yes – ANSI B175.1 compliant
✅ Compatible STIHL Chainsaws:
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MS 261, MS 271, MS 291, MS 311, MS 391
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Other STIHL saws that support a 20” bar with .325" pitch and .063" gauge
✔ Always confirm your chainsaw’s bar specs (pitch, gauge, and drive links) before purchase.
🪓 Best Uses:
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Firewood cutting
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Storm cleanup
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Light to medium felling
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Property and farm maintenance
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Forestry and semi-professional applications
🔁 Comparable Chains:
If STIHL OEM is not available, compatible alternatives include:
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Oregon 22LPX081G
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Carlton K2C-081G
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Forester F22-81
(Must match pitch, gauge, and drive link count for safe use.)
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🛠️ Why Choose STIHL 26RM3 Chains?
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Semi-chisel cutters stay sharper longer in dirty conditions
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Low-kickback design provides safety without compromising performance
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Oilomatic® lubrication ensures smooth cutting and long chain life
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Trusted STIHL OEM quality – fits perfectly and lasts longer
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A great balance of durability, speed, and user safety
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