Description
Overview:
This Sleeve for Stihl KM100 and KM100R Kombi engines is a genuine Stihl OEM component designed for the cylinder assembly in 2‐stroke powerheads. Made from durable steel, it restores a smooth, hard-wearing bore surface for the piston and rings, helping to maintain compression and reduce wear. The sleeve replaces a worn or scored liner so the engine can run smoothly, start reliably, and deliver steady power. It is engineered for a precise fit in Stihl KM-series multi‐tool engines, protecting internal parts and supporting long service life. Suitable for routine overhaul or corrective repairs, this part helps keep professional and domestic machines operating efficiently under regular use.
Key Features:
- Genuine Stihl OEM part for assured fit and function
- Precision-machined steel sleeve for consistent compression and smooth piston travel
- Helps reduce blow‐by and oil/fuel mix losses for cleaner running
- Supports reliable starting, steady idle, and stable power output
- Built to handle heat, vibration, and repeated load cycles in 2‐stroke engines
- Compatible with a wide range of Stihl KM series powerheads (see model list)
- Suitable for workshop rebuilds or planned maintenance by experienced users
- A direct replacement that maintains the integrity of surrounding engine components
Typical Applications:
Used during top‐end rebuilds of Stihl Kombi engines when the original liner is worn, scored, or heat‐damaged. Common in routine maintenance for high‐hour machines or after piston/ring replacement to restore correct clearances. Helps recover performance, starting, and fuel efficiency on landscaping, grounds care, and property maintenance tools that rely on KM powerheads.
Also known as:
Engine liner, cylinder liner, cylinder sleeve, barrel sleeve, bore sleeve, engine insert, liner insert, cylinder bore insert. These terms refer to the same internal sleeve component that provides the running surface for the piston and ring set in small 2‐stroke engines.
Fits Models:
KM 55, KM 55 C, KM 55 R, KM 55 RC, KM 56 C, KM 56 RC, KM 85, KM 85 R, KM 90, KM 90 R, KM 91 R, KM 94 R, KM 94 RC, KM 100, KM 100 R, KM 110 R, KM 111 R, KM 130, KM 130 R, KM 131, KM 131 R
Alternate Part Numbers:
4180-711-2501, 41807112501
Product Specifications
| L&S Part No. | 4180 711 2501 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 41807112501 |
| Unit of Sale | 1 |
| Machine Type | Kombi Engines |
| Fits Brands | Stihl |
| Key Features | - Genuine Stihl OEM part ensures precise fit and function - Precision-machined steel for consistent compression and smooth piston travel - Compatible with Stihl KM 55 to KM 131 R models - Reduces blow-by and oil/fuel mix losses - Suitable for top-end rebuilds and routine maintenance |
| Fits Models | KM55, KM55C, KM55R, KM55RC | KM56C, KM56RC | KM85, KM85R | KM90, KM90R | KM91R | KM94R, KM94RC | KM100, KM100R, KM110R | KM111R Engines | KM130, KM130R | KM131, KM131R |

