STIHL 25" Duromatic Guide Bar (3003 000 5631) Built for demanding cutting work, the STIHL Duromatic E is an exceptionally robust solid guide bar for chainsaws in the middle to high performance categories. Manufactured from extremely strong solid steel, it's designed to stand up to heavy use where durability matters most. At the bar nose—where the highest stress occurs—STIHL adds carbide alloy plating to help protect against wear and extend service life. If you're running longer bars for felling, cross-cutting, or heavy timber work, the Duromatic E is a dependable choice for professional users who need strength first. Key Features 25" / 63cm Duromatic guide bar Genuine STIHL part Solid steel construction for exceptional robustness Carbide alloy plated nose for added protection in the highest-wear area Ideal for middle to high performance chainsaws and demanding work Specification Bar Length 25" / 63cm Type Duromatic E (solid bar) Bar Tail / Mount 3003 Groove Width 1.6mm / .063" OEM Part Number 3003 000 5631 Compatibility note: Please match your current bar's mount (3003) and groove width (1.6mm / .063") before ordering. Why Choose the STIHL Duromatic? Solid steel construction is what distinguishes a Duromatic bar from a laminated bar — genuinely more resistant to bending under heavy load, which matters at 25" length where a bar flexes more under lateral stress. The carbide alloy nose plating adds durability specifically where wear concentrates most on longer bars. Pairs Well With Shop Compatible Chains Shop Sharpening & Maintenance Tools Also Known As Also searched for as: STIHL Duromatic E 25 inch, part 3003 000 5631, solid steel felling bar, STIHL carbide nose bar. FAQs How do I check this bar fits my saw?Match your current bar's mount (3003) and groove width (1.6mm/.063") before ordering. Is this suitable for felling and heavy timber work?Yes, the solid steel construction and carbide nose plating are built for demanding professional use.