TPI Wheel Bolts (10 pcs), Conical Seat, 17mm Flower, M14×1.25, 28mm, Silver Colour

TPI wheel bolts are designed for the safe and secure fitment of your car's wheels. They are intended for discerning drivers who demand reliability that surpasses OEM standards. Each bolt is made from high-grade steel and undergoes a heat-hardening process, which ensures consistent hardness and strength throughout its entire cross-section. The surface finish protects the bolts from corrosion and gives them a professional look. This pack contains 10 bolts.

Materials and durability testing

TPI bolts are manufactured from high-grade steel with an ASTM 4140 or SCM 440 specification, which corresponds to chrome-vanadium or chrome-molybdenum steel. The heat-hardening process ensures uniform hardness and strength throughout the entire cross-section of each bolt. The surface finish, created by zinc plating or triple nickel and chrome plating, protects the bolts from corrosion. Additionally, each production batch undergoes a salt spray test and a tensile strength test to verify its reliability.