🔧 Upgrade Your Ride with Confidence! Ideal for restoring performance in worn or damaged valve guides. Designed to reduce friction and ensure optimal lubrication at high RPMs. Crafted from manganese silicon aluminum bronze alloy for unmatched durability. 100% compatible with Brian Crower’s premium stainless steel valves. Engineered to withstand the harshest conditions, ensuring longevity. High Temp Resistance CNC Machined Precision Corrosion Resistant The BC1070 Valve Spring is a premium replacement part designed specifically for Honda D16Y8/D16Z6 engines. Made from a high-quality manganese silicon aluminum bronze alloy, these valve guides are CNC machined for precision and engineered to resist cracking and corrosion, ensuring optimal performance even under extreme conditions.