We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Six new piston rings, 42.5 mm by 1.2 mm, metallic finish

LAHDEK

LAHDEK Chainsaw Piston Rings 42.5mm x 1.2mm MS250 6pcs

SKU CH-J7F8-6KTKH

Six piston rings sized 42.5 mm × 1.2 mm for Stihl MS250 two-stroke chainsaws

  • Restores compression for reliable starting
  • Precise 42.5 mm x 1.2 mm dimensions ensure correct fit
  • Direct replacement for OEM part 1123 034 3006
  • Six-ring pack covers multiple rebuilds
  • Designed for Stihl MS250 025 MS 250 two-stroke engines

LAHDEK Chainsaw Piston Rings 42.5mm x 1.2mm

This LAHDEK kit supplies six new piston rings sized at 42.5mm by 1.2mm for two-stroke petrol chainsaws. They are manufactured to replace the original equipment part numbered 1123 034 3006 and arrive ready for installation. The set suits owners performing a top-end rebuild on compatible machines.

Fits Stihl MS250 and 025 models

These rings suit operators restoring compression on Stihl MS250, 025 and MS 250 chainsaws. They will not fit saws with different bore diameters or four-stroke engines. Buyers who need a complete piston assembly or rings for other displacements should look elsewhere.

Critical spec: 42.5mm x 1.2mm ring dimensions

The single specification that decides fitment is the ring size of 42.5mm x 1.2mm. This must match the cylinder bore and groove width exactly. Verify the measurements against your engine before ordering.

Highlights

  • Restores compression for reliable starting
  • Precise 42.5 mm x 1.2 mm dimensions ensure correct fit
  • Direct replacement for OEM part 1123 034 3006
  • Six-ring pack covers multiple rebuilds
  • Designed for Stihl MS250 025 MS 250 two-stroke engines

Specifications

No published specifications for this item yet.

Questions about this item

How can I confirm the piston rings are working correctly after installing them on my Stihl MS250?

After installation, the engine should start easily, hold steady compression, and run smoothly at idle and full throttle without excessive smoke or power loss.

What comes in the package and is anything else needed to complete the repair?

The box contains six piston rings sized 42.5mm x 1.2mm; you will need to supply gaskets, circlips, and two-stroke oil separately.

Which version should I choose for a Stihl MS250 or 025 chainsaw?

These rings are made for the Stihl MS250, 025, and MS 250 models and replace OEM part number 1123 034 3006.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.