BTR Valve Spring Fitment Issue

The nitride layer is adhered to the base material at microscopic level, so it will not flake or brake when the valves bend due to impacts with the pistons. Supertech valves 77lb dual springs ti retainers for volkswagen 12v 2.8l vr6 titanium retainers are manufactured with high quality military certified titanium alloy, cnc machined for tight that will ensure long term durability.