Profile: Usha Liner (Shapar) Pvt. Ltd. offers centrifugal cylinder liners, sleeves, and air-cooled blocks. Our piston rings are individually subjected to casting process. Close material control ensures tensile strength and resistance to wear & scuffing. Each ring is double turned & grounded for smoother performance and low fuel consumption. Our Gudgeon pins/piston pins are used for single cylinder engine applications. Our pins are made of steel alloy. Gudgeon pins are case hardened for wear resistance surface, and are coupled with tough cores to resist shock loads.