Proline® cylinder and piston kit for Stihl MS391 and MS311 as a big bore. This cylinder is Nikasil-plated. Please verify compatibility before purchasing, as some models listed used more than one style or part number, depending on the manufacturing date. Please match your part with ours for proper fitment; actual pictures are shown. Parts are Not made in China.
Includes:
- Cylinder
- Piston
- Piston rings
- Circlips
- Wrist pin
Specs:
- 49mm
- Nikasil plated
- Please note: Stihl manufactured two different cylinders; this is the three-screw manifold style (see picture).
Replaces Stihl OEM #:
- 1140 020 1204, 11400201204