ATC pistons are made of high-performance Cu Alloy. ATC are manufactured in sizes from diameter 50 to 100mm, whereas ABC pistons in sizes from diameter 50 to 200mm. The pistons are designed with improved powerful cooling circuit. ATC pistons are fixed to piston holder with thread, whereas ABC piston with bayonet fitting ring offering numerous advantages. The pistons come in three different types, the –F type which is solid piston, the –CR type comes with Closed Ring, and the –RS type which comes with steel split ring. Each piston type has its own specific application advantages.