Tsumura, Stihl Lightweight Chainsaw Bar 207FK4 - 18", 3/8", .063" , D025, 3003 008 6117, 30030086117, 3003 000 9417, 30030009417, 183RNDD025, 183VXLHD025

Tsumura Lightweight Chainsaw Bar - 18", 3/8", .063" , D025

SKU = 207FK4

Product Overview

The Tsumura 207FK4 is a professional-grade "Light & Tough" chainsaw bar manufactured in Japan. Unlike solid steel bars, this Lightweight version features a unique design where dove-tailed notches are laser-cut into the bar's body and filled with a specialized hard resin. This reduces the overall weight by approximately 20%, significantly improving the balance of the saw and reducing operator fatigue during long days of felling or bucking.

Despite the weight reduction, the bar maintains the rigidity of a solid steel bar, utilizing premium SKS-51 Japanese steel to ensure the rails remain true and resistant to wear.

Genuine OEM & Aftermarket Cross-Reference

This bar is a 100% direct lightweight replacement for the following part numbers:

• STIHL (OEM): 3003 008 6117, 30030086117 (Rollomatic ES) / 3003 000 9417, 30030009417 (Light 04)
• OREGON: 183VXLHD025 (VersaCut™) / 183RNDD025 (PowerCut™)
• GB: LHL18-63PA, LHL1863PA (Lush)
• SUGIHARA: ST2U-3Q45-A, ST2U3Q45A (Light Type)

Detailed Specifications

• Tsumura Part Number: 207FK4 (Light & Tough Series)
• Bar Length: 18" (45cm)
• Pitch: 3/8"
• Gauge: .063" (1.6mm)
• Drive Link Count: 66 DL
• Mount Type: D025 / 3003 (12.1mm Slot)
• Nose Type: 11-Tooth Replaceable Premium Sprocket Tip
• Construction: Resin-Filled Lightweight SKS-51 Japanese Steel

Fitment Guide

This bar utilizes the Stihl Medium/Large Mount (D025). It fits the following Stihl models (must be running 3/8" pitch drive sprockets):

• Professional & Farm Saws: 024, 026, 028, 029, 034, 036, 038, 039, MS 260, MS 261, MS 271, MS 290, MS 291, MS 310, MS 311, MS 361, MS 362, MS 390, MS 391, MS 400.
• Large Professional Saws: 044, 046, 064, 066, MS 440, MS 441, MS 460, MS 461, MS 462, MS 500i, MS 660, MS 661.

Why Choose Tsumura Lightweight Bars?

• Improved Saw Balance: On saws like the MS 462 or MS 500i, the 20% weight reduction at the end of the bar provides a more "neutral" feel, making the saw easier to pivot during limbing.
• Resin-Filled Stability: Unlike some hollowed-out "light" bars that can feel flimsy or vibrate, Tsumura’s resin-filled staggered notches keep the bar rigid and quiet in the cut.
• One-Piece SKS-51 Steel Face: Even with the weight reduction, the rails are made from the same high-carbon Japanese steel as their solid bars, offering superior hardness and life.

Tsumura Light & Tough – Reduced Weight Guide Bar – D025 (Stihl 3003 Mount)
A genuine Japanese Tsumura Light & Tough – Reduced Weight guide bar built for serious cutting performance in Australian hardwood.
This reduced-weight version features staggered weight-reduction dove-tailed slots cut into the bar body and filled with high-strength resin, lowering overall weight by approximately 20% while maintaining rigidity and rail durability.
Manufactured from a single piece of SKS-51 Japanese steel, this professional-grade guide bar is designed for demanding farm, firewood and forestry applications where reduced fatigue matters.

Technical Specifications
Mount Pattern: Oregon D025 / Stihl 3003
Common Application: Stihl saws approx. 60cc–91cc with 12mm bar studs
Pitch: 3/8"
Gauge: .063" (1.6mm)
Construction: Solid SKS-51 Japanese steel with resin-filled weight reduction