Tsumura, Stihl Lightweight Chainsaw Bar 210FK4 - 24", 3/8", .063" , D025, 3003 000 5231, 30030005231, 243RNDD025, 243VXLHD025

Tsumura Lightweight Chainsaw Bar - 24", 3/8", .063" , D025

SKU = 210FK4

Product Overview

The Tsumura 210FK4 is a premium "Light & Tough" professional chainsaw bar manufactured in Japan. This series is world-renowned for its weight-reduction technology: staggered dove-tailed notches are laser-cut into the SKS-51 steel body and filled with a specialized hard resin. This reduces the bar's 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 one-piece solid steel construction ensures the rails remain extremely rigid, making it the premier choice for professional arborists and loggers using modern high-power Stihl saws.

Genuine OEM & Aftermarket Cross-Reference

This bar is a 100% direct high-performance replacement for the following part numbers:

• STIHL (OEM): 3003 000 5231, 30030005231 (Rollomatic E) / 3003 008 6131 (Rollomatic ES)
• GA SPARES (ProKut): GAFCD2443RS (Professional Sprocket Nose)
• OREGON: 243VXLHD025 (VersaCut™) / 243RNDD025 (PowerCut™)
• GB: LHL24-63PA, LHL2463PA (Lush)
• SUGIHARA: ST2U-3Q60-A, ST2U3Q60A (Light Type)

Detailed Specifications

• Tsumura Part Number: 210FK4 (Light & Tough Series)
• Bar Length: 24" (60cm)
• Pitch: 3/8"
• Gauge: .063" (1.6mm)
• Drive Link Count: 84 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):

• Mid-Range 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?

• Optimized Saw Balance: Removing 20% of the weight from the bar (the furthest point from the operator) drastically improves the saw's pivot point, making it feel more like a 20" bar in the hands.
• Resin-Filled Stability: Unlike "hollow" lightweight bars that can vibrate or "sing" in the cut, Tsumura’s resin-filled pockets dampen vibration while maintaining the stiffness required for straight boring cuts.
• Japanese SKS-51 Steel: Induction-hardened rails provide superior wear resistance in Australian hardwoods, outlasting standard laminated and even some competitor solid-steel bars.

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