Cylinder Sleeving Sleeve with starter holes:Ported iron sleeve 3mm-1/8" and 4

3mm-1/8" and 4

3/16" thick flange

Designed with a great pipe program

and 1/2" 13mm drill chuck and key

3mm + you will get 1 aluminum mandrel

Cylinder Sleeving Sleeve with starter holes:Ported iron sleeve 3mm-1/8" and 4Bore and sleeve your cylinder back to stock or up to 2mm oversize. Supply the piston you plan to use and we will bore, sleeve and hone to size. Have 2 options. #1 Sleeved and sized with starter holes. Where you finish porting the cylinder to meet your specs. 250$ #2 Sleeved and sized fully port matched ready to bolt on. 400$ We use spin cast iron sleeves machined to a press fit and sized to fit your piston. Great option to try new things or just get