Stihl chainsaw
chain & bar size chart

Source: built from your Global Stihl Master List (Fire & Saw + Sawinery + dealer fiche + collector records), reorganised by engine series. Displacement per series is the representative figure for the family; values marked ≈ are approximate where fiche data is thin (mostly pre-1980 families). Critical for parts: same model name across two series = zero interchangeable internals (MS 181 in 1130 vs 1139; 041 vs 041 G in 1110 vs 1112) — verify the casting number. Corrections from the master list are flagged ⚠ in each panel.

On bar length & chain — read this: the solid bar is Stihl's published / typical recommended range. The hatched "real-world" reach is the least-rigorous data here: a few values are forum/dealer-grounded (462 ≈ 32″, 500i & 661 ≈ 42″ from arborist-forum milling reports; 880/881 59″ is Stihl's own spec), but most are my estimates extrapolated from displacement and general falling/milling practice — not a single authoritative source. More importantly, bar length alone doesn't determine what a powerhead can pull — the chain does. Real-world long-bar figures assume appropriate chain, typically skip or semi-skip tooth (fewer cutters = less drag) and often a coarser pitch (.404 vs 3/8) on the biggest saws. The same saw that struggles with a 36″ full-comp 3/8 bar will happily run a 36″ skip. Treat the hatched reach as "achievable with the right chain," not "drop on a stock loop and go." Pitch tiers (per Stihl's chain chart, tracking saw size): 1/4″ & 3/8″ Picco (low-profile) on sub-40cc saws · .325″ in the 40–55cc middle · full 3/8″ is the 55–90cc workhorse pitch · .404″ above ~90cc and on milling rigs. The MS 26x is the smallest Stihl that steps up to true 3/8″. Skip vs full-comp: full-comp is standard to ~24–25″; semi-skip suits ~28–32″; skip is normal at 32″+ and on any long milling bar. Per-family pitch in each panel is the typical OEM spec — it varies by market, model year, and sprocket, so confirm against the bar, chain, or sprocket before buying.