Tsumura, Stihl Chainsaw Bar 298HT4 - 25", 3/8"-.404", .063", Premium Hard Nose, E099, 3002 000 8031, 30020008031, 253ATME099

Tsumura Chainsaw Bar - 25", 3/8"-.404", .063", Premium Hard Nose, E099

SKU = 25-57-063-PH, 298HT4

Product Overview

The Tsumura 298HT4 (distributed as 25-31-063-PH) is an industrial-grade "Hard Tip" (Stellite-tipped) chainsaw bar manufactured in Japan. Unlike sprocket-nose bars, this is a solid, one-piece SKS-51 steel bar with a specialized cobalt-chrome alloy (Stellite) laser-welded onto the nose.

This bar is engineered for the most extreme Australian logging and milling conditions. By removing the sprocket and bearings, Tsumura has eliminated the primary point of failure when cutting in abrasive, sandy, or fire-damaged hardwoods. It is the professional standard for the Stihl MS 881 and MS 084/088 series.

Genuine OEM & Aftermarket Cross-Reference

This bar is a 100% direct high-performance replacement for the following .063 gauge / E099 part numbers:

• GA SPARES (ProKut): GAFCE2503HS (Verified replacement for Oregon 253ATME099)
• STIHL (OEM): 3002 000 8031, 30020008031 (Duromatic E)
• OREGON: 253ATME099 (Armor Tip™)
• GB: ST25-63PA, ST2563PA (Titanium Hard Top)
• SUGIHARA: ST2L-3Q63-A, ST2L3Q63A (Solid Hard Tip)

Detailed Specifications

• Tsumura Part Number: 298HT4 (Also known as 25-31-063-PH)
• Bar Length: 25" (63cm)
• Pitch: Pitch-Neutral (Commonly run as 3/8" or .404")
• Gauge: .063" (1.6mm)
• Drive Link Count: 84 DL (for 3/8") / 80 DL (for .404")
• Mount Type: E099 / 3002 (Stihl Extra-Large Mount / 14mm Slot)
• Nose Type: Laser-Welded Stellite™ Hard Nose
• Construction: Solid One-Piece SKS-51 Japanese Steel

Comprehensive Fitment Guide (A to Z)

Note: This E099 mount is specific to the largest Stihl powerheads and requires 14mm bar studs.

STIHL (Primary Fitment)

• Classic Series: 050, 051, 070, 075, 076, 084, 088, 08 S, 090, 090 G, S-10.
• Modern MS Series: MS 720, MS 880, MS 881.
• Specialist: Contra, Lightning.

Why Choose Tsumura Hard Tip Bars?

• 14mm E099 Stability: The solid-body construction provides the necessary rigidity to handle the massive torque and vibration generated by 120cc+ engines.
• Stellite™ Armor Tip: The cobalt-alloy nose inlay outlasts sprocket-nose bars in abrasive Australian timbers like Ironbark and Buloke, where grit and heat would destroy sprocket bearings.
• Induction-Hardened Rails: Tsumura's proprietary heat treatment ensures the rails resist "mushrooming" and spreading, maintaining a precise chain track even under extreme milling or heavy felling loads.

TSUMURA Premium Hard Nose Bar – E099 Mount
Engineered in Japan for professional loggers and demanding users, the Tsumura Premium Hard Nose bar delivers unmatched durability and cutting precision in tough conditions. Designed for extreme-duty chainsaw applications where sprocket noses wear quickly, this solid-body bar is built to last.

Available Sizes:
25″ – 3/8" or .404″ pitch, .063″ gauge – (Approx. 84 drive links .404")
30″ – 3/8" or .404″ pitch, .063″ gauge – (Approx. 92 drive links .404")
36″ – 3/8" or .404″ pitch, .063″ gauge – (Approx. 104 drive links .404")
Note: Drive link counts are approximate and may vary depending on chainsaw model. Please confirm compatibility before ordering chain loops.

Key Features:
One-piece SKS-51 solid steel – Exceptional strength and resistance to bending or warping
Salt-bath heat treated – Uniform hardness and extended bar life
Precision laser-cut grooves – Smooth chain movement and accurate cutting
Premium hard nose – Ideal for abrasive and high-impact cutting environments
E099 mount (14mm slot) – Fits large Stihl models such as 076, 088, MS880, MS881
Why Choose Tsumura Hard Nose?
Preferred by professional fallers and mill operators
Designed for extreme reliability where sprocket tip failure is a risk
Long service life even in the harshest timber or sandy environments