Stihl MS170 & MS180 Bars and Chains

Stihl MS170 and MS180 bars and chains for the most common UK homeowner saws.

Standard spec is 3/8" Lo Pro (Picco / PM3) × .043" (1.1mm) gauge. The usual 14" bar is 50 drive links; the 16" bar is 55 drive links. 12" bars are 44 drive links.

This collection covers the MS170, MS171, MS180, MS181 and closely related models that share the Stihl Group 1A mount. We stock genuine Stihl factory bars alongside high quality aftermarket options from Sugihara, Oregon, Cannon and Tsumura.

Always check the pitch, gauge and drive-link count stamped on your current bar before ordering.

14 products

Stihl MS250 & MS251 Guide Bars & Chains Fitment Guide

This collection covers the Stihl MS250, MS251 and closely related models that share the standard Stihl Group 2A bar mount. We stock genuine Stihl factory bars alongside solid aftermarket options from Sugihara, Oregon, Cannon and Tsumura.

Frequently Asked Questions

What chain does a Stihl MS250 or MS251 take?

Most MS250 and older MS251 saws run .325" pitch × .063" (1.6mm) chain. Newer MS251 versions often use .325" × .050" (1.3mm). Common drive links: 14" ≈ 56 DL, 16" ≈ 62 DL, 18" ≈ 68 DL. Always check the stamp on the motor end of your bar.

Will Sugihara, Oregon, or Tsumura bars fit my MS250/MS251?

Yes. Any bar made for Stihl Group 2A with matching pitch and gauge will fit. Solid-billet bars from Sugihara and Tsumura are popular upgrades for stiffness and durability.

What is the best bar length for an MS250 or MS251?

The 16" (≈62 DL) is the most common and best balanced length for these saws. A 18" (≈68 DL) gives extra reach for firewood and property work while remaining well within the engine’s power. 14" bars are also popular for tighter work.

Do I need a new sprocket?

Only if the current one is worn (deep grooves) or you are changing pitch. Standard .325" setups use the original sprocket.