Cylinder & Piston Assy Fits Stihl 1128-020-1250 MS461 GS461 Rock Boss 52 mm by Rotary $88.39 Save Liquid error (snippets/product-badge line 32): Computation results in '-Infinity'% 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart PRODUCT INFORMATION Type Other PRODUCT DESCRIPTION DESCRIPTION Cylinder/Piston Assembly replaces Stihl 1128 020 1250. Fits Model MS461 chainsaw & GS 461 Rock Boss concrete saw. 52mm FITS MODELS STIHL GS 461 Rock Boss, MS461 REPLACES OEM STIHL 1128 020 1250