From matte black to bright red

voltage correction

Apply ARP Ultra-torque fastener assembly lubricant to the threads of the studs

using the highest quality materials

CP Forged Piston Set, BMW N63, Pro-Xtreme, Sleeved Compression Ratio:10.5:1 From matte black to brightPlease note that these pistons are only suitable for use in engine blocks that have been machined to have iron cylinder sleeves. Recommended piston to wall clearance is ~0. 0035 0. 0045 in 5150 AutoSport Pro Xtreme Forged Pistons by CP Carrillo for BMW N63 Engines The 5150 AutoSport Pro Xtreme Forged Pistons, developed by CP Carrillo, are engineered to meet the rigorous demands of high performance BMW N63 engines. Built from aircraft grade steel,