Upgraded Piston w/Premium Ring kit 85-95 Toyota 2.4L Pickup 4Runner Celica 22R/E/EC 8V SOHC (standard) Aluminum silicon pistons - Minimizes fractures and cracks High alloy steel rings - Lasts 50% longer More oil passage holes in oil ring groove - No more oil gumming up Shortened compression distance - For resurfacing head &/or block Oversized pin diameter - Eliminates replacing rod bushings