Piston Kit - 101.60 mm - 10.5:1 CR - Triumph Machined from 2618-T6 high tensile forged aluminum, Domed, dished or flat top features smooth flowing radii; require no deburring or preparation, JE designs are specifically engineered for extreme applications including professional competition, Kit includes piston(s), wrist pin, circlip and rings unless otherwise noted, Made in the USA