We have been testing these Motorad ignition coils in the world’s most powerful CT4-V Blackwing, which currently makes 747 peak whp. OEM coils retail for $113 each, or $678 per set. The Motorads are higher quality, perform better and sell for less than half the price! These coils are sold in sets of six and include a limited lifetime warranty. These are now available for immediate shipment at TapoutTuning.com!