The Cylinder & Piston 54mm for Stihl 066 MS660 is a non-genuine replacement top-end kit for restoring engine performance on compatible Stihl chainsaws. Built around a cast aluminium cylinder with a Nikasil-lined bore for wear resistance and heat control, it includes a matched aluminium piston, steel rings, gudgeon pin, and circlips. The 54 mm (2.13 in) bore matches the original specification to recover compression, power, and starting reliability. Designed as a direct replacement for OEM part number 1122 020 1211, it suits routine rebuilds or repairs on the 066 and MS660. The robust construction is intended for demanding cutting tasks, helping extend the service life of the machine when installed and run-in correctly with suitable oil and fuel.

Key Features:
– Non-genuine replacement part compatible with Stihl 066 and MS660 models
– Direct swap for OEM reference 1122 020 1211 to simplify selection and fitting
– 54 mm (2.13 in) bore for correct compression and reliable running
– Nikasil-lined cylinder for excellent wear resistance, low friction, and heat dissipation
– Complete kit: cylinder, piston, rings, gudgeon pin, and circlips
– Precision-finished bore surface to support ring sealing and longevity
– Helps restore lost power, throttle response, and fuel efficiency on tired engines
– Durable materials suited to frequent, heavy-duty cutting work
– Straightforward installation with standard workshop tools, reducing downtime

Typical Applications:
Used to rebuild or refresh the top end after wear, scoring, or seizure; as preventative maintenance on hard-worked saws; or to return stored machines to service. Suitable for forestry, tree surgery, milling, construction site cutting, and firewood processing where dependable power and clean running are required.

Also known as:
Top-end rebuild kit, pot and piston kit, barrel and piston assembly, 54 mm top-end kit, jug and piston set, engine top-end repair kit for 066/MS660.

Fits Models:
066, MS660

Alternate Part Numbers:
1122 020 1211, 11220201211, E6276

Product Specifications