×
Description
3689 005 0074 Stihl 26RM3 Rapid Micro .325" Chainsaw Chain — 74 Drive Links Semi-Chisel Low Kickback Genuine OEM Part
The Stihl 26RM3 Rapid Micro Chainsaw Chain (74 Drive Links) is a genuine OEM replacement chain designed for STIHL chainsaws equipped with an 18-inch guide bar using a .325" pitch and .063" gauge. As the low-kickback version of STIHL Rapid™ Micro™, this RM3 chain delivers the same smooth cutting performance as standard RM chains while reducing the risk of kickback injury.
Featuring a taller-profile design with increased mass, this chain is well-suited for larger displacement engines. The semi-chisel cutter design provides excellent durability and edge retention, making it easier to maintain during normal cutting conditions.
This is the exact OEM chain specified by STIHL for saws running an 18" .325 .063 bar with 74 drive links, ensuring proper fitment, safe operation, and reliable performance.
Product Details
-
Item Number: 3689 005 0074
-
Brand Compatibility: Stihl (OEM)
-
Chain Family: Micro
-
Chain Model: 26RM3 (Rapid Micro 3)
-
Part Type: Chainsaw Chain Loop
-
Bar Length: 18 Inch
-
Pitch: .325" (8.35 mm)
-
Gauge: .063" (1.6 mm)
-
Drive Link Count: 74 Drive Links
-
Cutter Type: Semi-Chisel
-
Cutter Sequence: Standard
-
Kickback Reduction: Single-Humped Drive Links
-
Sharpening File Size: 3/16"
-
Condition: New Genuine OEM Replacement Part
Function
This chain is designed to:
-
Deliver smooth, consistent cutting performance
-
Reduce kickback risk compared to standard chains
-
Provide durability and longer edge life than full-chisel chains
-
Perform well on higher-displacement chainsaws
-
Replace worn or damaged OEM chain loops
⚠️ Semi-chisel chains trade a small amount of cutting speed for durability, safety, and easier maintenance.
Verify Fitment in 30 Seconds
Before ordering, confirm the following on your guide bar or current chain:
-
Bar Length: 18"
-
Pitch: .325"
-
Gauge: .063"
-
Drive Links: 74
⚠️ Model alone does not guarantee fitment — bar specifications must match.
These details are typically stamped on the guide bar or listed in the owner’s manual.
⚠️ .063 gauge chains will NOT fit .050 or .058 gauge bars.
Compatibility
Fits STIHL chainsaws using an 18” bar with .325 pitch, .063 gauge, and 74 drive links, including:
-
Stihl MS 261 / MS 261 C-M
-
Stihl MS 260 Pro
-
Stihl MS 270
-
Stihl MS 271 Farm Boss®
-
Stihl MS 290 Farm Boss®
-
Stihl MS 291 Farm Boss®
-
Stihl MS 310
-
Stihl MS 311 Wood Boss®
⚠️ Also fits other STIHL models that accept the same bar and chain specifications.
Installation / Usage
-
Remove the old chain from the guide bar
-
Install the new Stihl 26RM3 chain loop onto the sprocket and bar
-
Adjust chain tension correctly (snug but movable by hand)
-
Lubricate with proper bar and chain oil
-
Test saw operation before cutting use
Maintenance Tips
-
Sharpen regularly using a 3/16" file
-
Maintain proper depth gauge settings
-
Keep chain tension properly adjusted
-
Clean cutters and drive links frequently
-
Lubricate with quality bar and chain oil
-
Replace chain if damaged or excessively worn
-
Store in dry, lightly oiled conditions to prevent corrosion


