Silca Speed Chip Go Faster Silca continues to be at the top of the game when it comes to improving a bike's performance, longevity, and ride quality. This Silca Speed Chip is yet another example of this high-level innovation. The Speed Chip is a wax additive chip that modifies the blend of your Silca Secret Chain Wax Blend (sold separately) to meet the needs of your ride, optimizing it for maximum pedaling efficiency. The Speed Chip is a fully synthetic wax designed to be the flat-out fastest when every watt counts, increasing chain efficiency by up to 0. 6%. Have a race day coming up? Use a Speed Chip (or two) in your Secret Chain Wax to maximize the efficiency of your drivetrain for the days when every second counts, and every watt gained can mean the difference between standing on the podium or going home. Features Fully-synthetic wax additive chip to add to your Silca Secret Wax blend (sold separately) for increased pedaling efficiency on the fastest rides Compatible with Silca Strip Chip for easier chain treatment Maximizes drivetrain efficiency with an efficiency increase at 250 watts of 0. 4% (1 Speed Chip) and 0. 6% (2 Speed Chips)Provides maximum benefits for rides of approximately 1-8 hours for the hardest efforts Specifications Included in Box1 Silca Speed Chip Recommended Wax Silca Secret Chain Wax Blend | Silca | Speed Chip High Performance Additive