THIS IS THE ULTIMATE RACE CHAIN.  

 Timing chains stretch and wear under load.   This retards the cam timing at high RPM.  Years ago we found that the German-made Iwis chains did not stretch or wear as much as other brands.  These precision race chains are constructed using hardened alloy links and pins with solid cylindrical rollers.  Enhance your top end performance with this timing chain upgrade. Always use new chains when you rebuild an engine.