STIHL 3639 005 0068 (26RS 68) Chainsaw Chain – 18-Inch, .325 Pitch, .063 Gauge, 68 Drive Links

Overview

The STIHL 3639 005 0068 chain is part of the trusted Rapid Super line, built for professionals who regularly encounter demanding cutting conditions. With an 18-inch length, 68 drive links, a .325 pitch, and a .063 gauge, this chain is designed for strong performance on well-maintained wood and for larger diameter cuts.

Factory pre-stretching helps reduce mid-break-in adjustments, allowing for steadier tension during initial use and fewer interruptions. The 26RS designation signals a fast-cutting action that works best in clean cutting conditions with limited dirt exposure, aligning with professional workflows where speed matters.

Key design traits and benefits

• Oilomatic drive link lubrication slots channel oil directly to the rivet area, supporting reduced wear and maintaining consistent performance over time.
• Pre-stretched at the factory, helping to minimize early adjustments and promote smoother operation right out of the box.
• 26RS Rapid Super series delivers fast cutting action in clean conditions, enabling efficient progress through wood with minimal clogging.
• Yellow label design aids quick identification among chains for professional use in busy shops or on job sites.
• Noticeable kickback risk is associated with this design; use only with advanced cutting experience and specialized training, and follow all safety guidelines.

Compatibility, safety, and usage tips

• Fits STIHL chainsaw models such as 025, MS250, and MS251; verify fitment with your owner’s manual and part numbers before installation.
• Always wear protective gear including eye protection, hearing protection, gloves, and chainsaw chaps during maintenance or replacement work.
• Some variations of listed models may require different chain specs; confirming compatibility helps prevent installation issues.

Real-world use scenarios

Ideal for experienced operators performing routine cuts on clean wood. The 18-inch length supports mid-to-large diameter cuts, while the .325 pitch and .063 gauge balance speed with durability for longer cutting sessions. The yellow label helps quick recognition in a busy workshop.