Machined crown with valve pockets 40.5mm comp height. 1160XC9093. High performance engines demand high quality pistons. Accralite is dedicated to producing the finest forged pistons by combining the very best in materials, design and engineering technology. These tried and tested pistons have many features to aid performance and reliability machined into the piston as standard. So whether a requirement is for minor events or critical high performance applications, the same high specification is applied to the manufacturing processes of all Accralite Pistons. All pistons are matched balanced to within +/- 1 gram weight tolerance and are supplied complete with the finest quality ring sets and gudgeon pins.