Upgrade Pins and Rings. T62816 Alloy. Contact reduction grooves between crown and first ring land. Accumulator Groove between first and second ring land. High Performance rings. 1st Ring Carbon Steel Nitride. 2nd Ring Ductile Iron Phosphate Oil Ring Carbon Steel Nitride 9810 Tool Steel Gungeon Pins
20 thou of 40 thou oversized RB25 DET - 86.5MM / +0.020"
