The Stihl 18″ (45 cm) RS chain is a genuine Rapid Super full-chisel chain loop designed for fast, precise cutting in tough conditions. Made from hardened steel with strong riveted joints, it offers high cutting speed, accuracy, and control on mid-range Stihl saws such as the MS 260 and MS 261.
With 74 drive links, a .325″ pitch (8.25 mm), and a .063″ (1.6 mm) gauge, this chain delivers smooth performance with reduced vibration and chatter. Built for forestry, arborist, and heavy-duty work, it is a reliable replacement loop for 18″ guide bars specified for .325″ x 1.6 mm setups. OEM Part No: 3639 003 0074.
Key Features
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Genuine Stihl RS (Rapid Super) full-chisel chain for maximum cutting performance
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18″ (45 cm) loop with 74 drive links for correct fit on mid-range bars
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Pitch: .325″ (8.25 mm) | Gauge: .063″ (1.6 mm) for clean, powerful cuts
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Low-vibration design to improve comfort and reduce fatigue during long jobs
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Excellent for fast plunge cutting, boring, and precision work in hardwood and softwood
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Hardened steel cutters and rivets provide long-lasting durability
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Built to minimise chatter and maintain stable chain tracking
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OEM identification: 3639 003 0074 / 3639 000 0074
Typical Applications
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Felling and snedding small to medium trees
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Bucking logs and processing firewood
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Limbing and crown reduction for arborist tasks
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Routine forestry, estate, and landscaping maintenance
Also known as
Stihl RS chain loop, Rapid Super full-chisel chain, 18″ 74DL saw chain, .325 x .063 74-link chain, OEM Stihl replacement loop, forestry cutting chain.
Fits Models
MS 260, MS 260 C, MS 261, MS 261 C, MS260, MS260C, MS261, MS261C
Alternate Part Numbers
3639 003 0074, 3639 000 0074, 36390030074, 36390000074
 RS Chainsaw Chain – 74DL, .325″ x .063″){kind=link}