Stihl model · engine series 1102
BLK 57 98 cc
98 cc, Pallas carb; 105 cc BLK 58 = types 1103–1105
The production, market and rarity details above are specific to the BLK 57 roster record. The displacement below is specific to this roster record. The chain, bar and mount are the published family fitment for engine series 1102; confirm the pitch, gauge and drive-link count stamped on your installed bar before ordering.
Model & family fitment specs
Chains & bars that fit the BLK 57
Pitch & gauge .404″ (≈) · recommended bar 18–24″ · bar mount Proprietary / nonstandard mount · round file 7/32" (5.5 mm)
Files, oil & sharpening
Suggested match: Oregon 27/59-series. Confirm the drive-link count for your exact bar length before ordering. These are equivalent aftermarket (Oregon) chains, not genuine STIHL chain — STIHL sells its own chain through its dealer network, and we're not affiliated with STIHL. New to fitment? See the bar-mount identification guide and chain & cutter guide.
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Data confidence
Chain, bar, mount and displacement confidence comes from the shared BLK family research.
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