WPC Treatment Engine Parts Trinity Racing 3mm Piston Rings

3mm Piston Rings

Sunstar has put into their sprockets

Not a replacement cover

On top of all the feature already available on the factory Honda Grom Gauge

WPC Treatment Engine Parts Trinity Racing 3mm Piston RingsThe WPC Treatment for Engine Parts is an advanced Japanese developed metal surface enhancement process (Wonder Process Craft or Wide Peening Cleaning) that dramatically improves durability, reduces friction, and boosts overall performance in high revving or stressed engines. Unlike coatings that can wear off or alter dimensions, WPC is a permanent micro shot peening treatment using ultra fine, high velocity media to create a compressed, micro dimpled