Drag Cartel K-Series Lower Timing Chain Guides are a high-quality, high-performance bolt-on option to replace K-Series OEM lower chain guides. Additionally, this guide prevents the timing chain from slipping off the crank pulley gear when performing a cam swap. Manufactured from high-quality billet aluminum and machined to extreme tolerances, it ensures proper fitment of the components. It's hard-anodized for increased durability and corrosion resistance.