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
Four new piston rings 425mm by 12mm for Stihl MS250 025 chainsaw

LAHDEK

LAHDEK 4pcs Piston Rings 425mm x 12mm for Stihl MS250 025 1123 034 3006 replacement engine part

SKU CH-CVD9-T43VS

Set of four piston rings measuring 425 mm by 12 mm for Stihl MS250 and 025 two-stroke chainsaws, replacing OEM part 1123 034 3006

  • Four piston rings restore compression on Stihl MS250 025 MS 250
  • 425 mm diameter by 12 mm width matches OEM 1123 034 3006
  • Designed for two-stroke petrol chainsaw engines
  • Direct replacement for worn factory rings
  • Pack contains four rings for complete cylinder service

Direct-fit piston rings for Stihl MS250 025

This set contains four piston rings sized 425mm by 12mm. They are manufactured to replace OEM part 1123 034 3006 on two-stroke petrol chainsaws. The rings suit the MS250 025 model series and are supplied new.

Four rings supplied ready for a complete rebuild

The pack includes exactly four piston rings, matching the quantity required for a single engine overhaul. No additional gaskets, clips or tools are bundled. Having the full set in one package avoids ordering individual rings separately.

Simple installation for experienced mechanics

The rings slide into the cylinder groove after the piston is removed from the connecting rod. Correct end-gap orientation and clean ring lands are essential; incorrect fitting causes compression loss or scoring. The task is not suited to beginners without small-engine repair experience.

Highlights

  • Four piston rings restore compression on Stihl MS250 025 MS 250
  • 425 mm diameter by 12 mm width matches OEM 1123 034 3006
  • Designed for two-stroke petrol chainsaw engines
  • Direct replacement for worn factory rings
  • Pack contains four rings for complete cylinder service

Specifications

No published specifications for this item yet.

Questions about this item

How often should the four piston rings be replaced on a Stihl MS250?

Replace the 12 mm wide rings whenever the cylinder is honed or compression drops below specification; they are sold as a set of four for a complete overhaul.

What clearance limit stops a Stihl MS250 from running continuously?

The 425 mm diameter rings control blow-by; excessive end-gap from wear is the first limit that cuts power during long cuts.

Does the 1123 034 3006 ring set change engine temperature on a MS 250?

The 2-stroke petrol rings restore factory compression, so cylinder heat and exhaust noise return to original levels when the rings are fresh.

Also in this aisle

People compared these

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