Genuine STIHL 20" Chainsaw Chain 26 RS 81 - .325" Pitch, .063" Gauge, 81 Drive Links (OEM)

Overview: The genuine STIHL 26 RS (Rapid Super) 81 is a heavy-duty, full-chisel chainsaw chain built for professional loggers, arborists, and demanding firewood cutters. Engineered for mid-to-high powered chainsaws, this aggressive 20-inch chain delivers ultra-fast plunge cutting, rapid felling, and high-efficiency cross-cutting. When cutting clean or frozen wood, nothing beats the speed and smooth performance of a true STIHL RS chain.

Key Features:

Full-Chisel Performance: Featuring razor-sharp, square-cornered cutters that slice through hardwood and softwood with incredible speed, reducing your cutting time significantly compared to semi-chisel chains.

Reduced Vibration: The optimized cutter and tie-strap design dramatically lowers vibration levels at the handles, keeping operator fatigue to a minimum during long, demanding shifts.

STIHL OILOMATIC® Technology: Designed with engineered lubrication channels that funnel bar oil directly into the chain rivets. This drastically reduces friction, prevents overheating, and extends the lifespan of both your chain and guide bar.

Factory Pre-Stretched: Precision-manufactured and pre-stretched at the factory to eliminate excess sagging and stretching during the initial break-in period.

Specifications:

Brand: STIHL (Genuine OEM Part - #3639 000 0081 / 3639 005 0081)
Chain Model: 26 RS (Rapid Super)
Bar Length: 20 inches
Pitch: .325"
Gauge: .063" (1.6 mm)
Drive Links: 81 DL
Recommended File Size: 3/16" (4.8 mm)

Fitment & Compatibility: This chain is compatible with the following STIHL models when equipped with a 20-inch bar, .325" pitch, and .063" gauge: MS 261, MS 270, MS 271 (Farm Boss), MS 280, MS 291

(Note: Can also fit heavier models like the MS 361 or MS 362 if they have been specifically converted to a .325" pitch setup).

Important Fitment Note: Guide bars can vary greatly. Please verify your current guide bar's stamped numbers (.325", .063", and 81 DL) before placing your order to ensure a perfect fit.

⚠️ SAFETY WARNING (ANSI B175.1 - YELLOW LABEL): This is a "Yellow Label" aggressive chain. It does NOT meet the low kickback requirements of ANSI B175.1. It has no kickback reduction features and is highly capable of kickback. It should only be purchased and operated by trained professionals or highly experienced chainsaw users equipped to handle kickback energy safely.