RA Cylinder & Piston Kit for Stihl MS390 MS290 MS310 029 039 – Rep 1127 020 1210

Overview

RA's Cylinder & Piston Kit is designed to restore peak performance on Stihl saw models—including MS390, MS290, MS310, 029, and 039. This direct replacement aligns with OEM specifications and supports a wide range of backyard projects and professional tasks alike. The kit is crafted to offer a clean, consistent rebuild experience that pairs well with regular maintenance routines.

In real-world use, you might notice smoother acceleration, steady torque as you bite into firewood, or a more predictable start during chilly mornings. Keep in mind that results can vary based on your saw's overall condition and your maintenance habits.

Big Bore Power and Durability

The kit features a high-performance big-bore design with a 49mm cylinder diameter, engineered to improve cutting efficiency and engine longevity under typical use. The precision machining focuses on minimizing friction and heat, which can help sustain performance during long sessions on tough wood.

• Compatible with Stihl MS390, MS290, MS310, 029, and 039 models
• Direct replacement for OEM part 1127 020 1216

Complete Kit for Quick DIY Replacement

Includes cylinder, piston, piston pin, 2 piston rings, and 2 circlips—everything you need for a complete swap using common hand tools. Some components arrive pre-assembled to speed up your project and reduce handling steps.

• Pre-assembled components simplify the initial setup
• High-grade aluminum alloy and heat-resistant materials resist wear and heat

Installation and Practical Use

Designed for straightforward DIY replacement, the kit supports a clean swap with basic tools, helping you minimize downtime between projects. Expect a precise fit that aligns with the engine's timing and compression characteristics, contributing to reliable operation after installation.

Quality and Fit Assurance

Each part is manufactured to tight tolerances with durable materials. The kit's components are chosen to complement each other, supporting smooth motion and consistent compression during operation. You may experience less vibration and better fuel efficiency with regular maintenance and correct installation.

Notes on Performance and Fit

Actual performance depends on your chainsaw condition and maintenance routine. The data reflect the product's engineering intent to improve efficiency and reliability, not to guarantee specific outcomes. Follow OEM guidance for installation torque and break-in procedures when applicable.

Included components: cylinder, piston, piston pin, 2 piston rings, 2 circlips. Durable materials and a precision build aim to deliver a smooth, dependable rebuild for your Stihl saw.