{"product_id":"carbhub-49mm-cylinder-piston-assembly-for-stihl-ms390-ms290-ms310-rebuild-kit-with-decompression-bearings","title":"Carbhub 49mm Cylinder Piston Assembly for Stihl MS390\/MS290\/MS310 — Rebuild Kit with Decompression \u0026 Bearings","description":"\u003cp\u003e\u003cstrong\u003eCarbhub's 49mm cylinder piston assembly is a complete aftermarket engine rebuild kit designed to restore compression and performance to compatible Stihl MS390, MS290, MS310, 029 and 039 chainsaws.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf your Stihl chainsaw is showing reduced power, excessive smoke, or hard starting, replacing the cylinder and piston with a matched assembly can bring stronger, more consistent combustion. This Carbhub kit replaces OEM part 1127 020 1216 and includes the cylinder (with decompression hole), piston, crankshaft components and all necessary seals and fasteners to simplify installation.\u003c\/p\u003e\n\n\u003ch3\u003eWhich Stihl models will this assembly fit?\u003c\/h3\u003e\n\u003cp\u003eThis replacement is engineered for specific Stihl two-stroke saws. It fits MS390, MS290, MS310 and the legacy 029 and 039 models when those engines use a 49mm bore and the decompression-style cylinder.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect fit for Stihl MS390, MS290, MS310, 029, 039 using 49mm cylinders\u003c\/li\u003e\n  \u003cli\u003eReplaces OEM number 1127 020 1216 for compatible engines\u003c\/li\u003e\n  \u003cli\u003eNot suitable if your original cylinder lacks the decompression hole\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat parts are included in the kit and why they matter?\u003c\/h3\u003e\n\u003cp\u003eThe kit arrives complete so you can rebuild the top and bottom end without sourcing extra parts. Included bearings, oil seals and the piston pin needle cage bearing help ensure the rotating assembly runs true and is protected against oil and dirt infiltration.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOne 49mm cylinder with decompression hole and matching piston\u003c\/li\u003e\n  \u003cli\u003eCrankshaft, engine bottom cover, two crank main bearings and oil seals\u003c\/li\u003e\n  \u003cli\u003ePiston pin needle cage bearing, four cylinder mounting screws, spark plug and decompression valve\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow will installing this assembly affect saw performance?\u003c\/h3\u003e\n\u003cp\u003eReplacing a worn cylinder and piston restores compression and combustion efficiency, which usually leads to stronger throttle response and easier starting. Properly sealed bearings and oil seals also reduce leakage and prolong engine life when installed correctly.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eImproved compression for more reliable power delivery\u003c\/li\u003e\n  \u003cli\u003eNew bearings and seals reduce oil and air leakage\u003c\/li\u003e\n  \u003cli\u003eDecompression valve eases starting on compatible engines\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat installation points should I check before buying?\u003c\/h3\u003e\n\u003cp\u003eConfirm your current cylinder has a decompression hole before ordering—this kit will not match cylinders without that feature. Also verify the engine uses a 49mm bore and compare your OEM number to 1127 020 1216 to ensure compatibility.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify cylinder bore is 49mm and has decompression hole\u003c\/li\u003e\n  \u003cli\u003eCompare your saw's OEM part number to 1127 020 1216\u003c\/li\u003e\n  \u003cli\u003eUse basic engine service tools and follow torque specs during installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: This Carbhub assembly is aimed at DIYers, small-timber contractors and repair shops that need a full, economical top-and-bottom-end replacement for compatible Stihl saws. If you can remove the cylinder and crank components or have access to a technician, this kit supplies the common parts required to return a fatigued two-stroke engine to dependable service. Do not purchase if your original cylinder lacks the decompression hole or your model uses a different bore size.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this kit fit a Stihl MS290 with a 49mm bore?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—this Carbhub assembly is made for Stihl MS290 engines with a 49mm cylinder and the decompression hole, replacing OEM 1127 020 1216.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What should I check before ordering?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Confirm your cylinder bore is 49mm, verify presence of a decompression hole, and compare your OEM number to 1127 020 1216.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Carbhub","offers":[{"title":"Default Title","offer_id":56834577727828,"sku":"B07CZX1K4S","price":110.53,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/carbhub-front-packaging-cylinder-piston-assembly.jpg?v=1787051749","url":"https:\/\/gardenluxe.co.uk\/products\/carbhub-49mm-cylinder-piston-assembly-for-stihl-ms390-ms290-ms310-rebuild-kit-with-decompression-bearings","provider":"Gardenluxe Uk","version":"1.0","type":"link"}