Stihl 039, Ms390 Piston, 49mm Replaces Stihl Part # 1127-030-2005

Stihl Replacement Piston Assembly, Replaces Part Number 1127-030-2000, Suitable For These Stihl Models: 039, 039 Farm Boss, Ms 390, Ms390. Piston Is 49mm In Diameter..note This Kit Is Not Made In China. This Is A Very High Quality Replacement Cylinder Piston Kit. Material- The factories use the highest grade material coming from Japan. This is AC4B. 2. Coating- Before coating, all performance saw cylinders are put through 13 preliminary processes to ensure maximum penetration, thickness and coverage. Coating thickness is .04-.06 mm of chrome which increases the life of the cylinder. 3. Machining- Complete machining on all cylinders is performed by accurate CNC tool machines. 4. Die-Casting- All cylinders are made by slow gravity fed die-casting. This increases the weight of the cylinder which enhances the performance and life of the rebuild. 5. Tooling- Each cylinder tooling has limited life and are replaced after the manufacturing of 50,000 pieces. All tooling is checked on a monthly