GB ProTop Titanium Chainsaw Bar 3/8" .063" SN D025

GB ProTop Titanium Chainsaw Bar — Professional Grade Performance

Built for pro users who want long service life, clean tracking, and low downtime. ProTop “Titanium” series bars use a solid, heat-treated alloy-steel body and a replaceable sprocket-nose tip for smooth cutting and dependable durability.

Key Benefits

• Low-friction feed: Sprocket-nose tip reduces drag versus hard-nose bars for efficient cutting.
• Durable rails: Solid, heat-treated body resists groove wear in demanding use.
• Balanced handling: Stable tracking and precise control for felling, bucking and limbing.
• Lower lifetime cost: Replace the nose assembly instead of the entire bar when worn.

Technical Specs

• Pitch: 3/8"
• Gauge: .063"
• Mount: SN / D025 (Stihl 3003 pattern)
• Body: Solid, heat-treated alloy steel (ProTop “Titanium” series)
• Tip: Replaceable sprocket nose
• Applications: Professional forestry, arboriculture, logging, firewood

Fitment Checklist (Reduce Returns)

• Confirm your saw runs 3/8" pitch and .063" gauge chain.
• Confirm your bar mount is SN / D025 (Stihl 3003).
• Match the drive link (DL) count below to your chain length.

Fits Stihl Models

024, 026, 027, 028, 029, 030, 031, 032, 034, 036, 038, 039, 040, 041, 042, 044, 045, 046, 048, 056, 064, 066, E15, E20, E220C, FARMBOSS, MS260, MS261, MS270, MS271, MS280, MS290, MS310, MS360, MS361, MS380, MS381, MS390, MS400, MS440, MS460, MS461, MS462 C, MS500i, MS650, MS660, MS661

Tip: Make sure your drive sprocket is 3/8". Model list is indicative, not exhaustive.

Important Chain Length Notes

• 22" (SN22-63PA):
  • Install with 75DL by removing clutch c-clip & rim to loop chain; refit before operation.
  • 76DL tensions at ~85% of adjuster travel (near maximum).
• 42" (SN42-63PA):
  • Install with 134DL by removing clutch c-clip & rim to loop chain; refit before operation.
  • 135DL tensions at ~85% of adjuster travel (near maximum).

Note: Adjuster position varies with rim size, bar wear and setup. Always reinstall the clutch c-clip and rim sprocket before running the saw.

Drive Link Reference

Drive-link counts are sourced from GB Forestry Australia and assume a standard 7-tooth rim sprocket. Required DL may vary with sprocket size (rim or spur), saw model, bar wear and chain type. Always confirm against your existing chain.

*See “Important Chain Length Notes” for SN22-63PA & SN42-63PA tension guidance.

Maintenance Tips

• Keep bar groove and oil holes clean for proper lubrication.
• Grease the sprocket-nose bearings regularly.
• Flip the bar periodically to even rail wear.
• Set chain tension correctly to maximise bar life.