XR Series ignition coil set for '97-'05 GM LS1/LS6 and Medium Duty 7.4/8.1 provides up to 15-20% more energy over stock ignition coils.Built from ultra-pure copper alloy windings, our coils have been tested to 8,000+ RPM and 1,500 HP.
- EPA:N/A
- Ignition>Stock Replacement Ignition
- LTL:N
- MPN:30386-8
- Non-CARB:N
- Prop65:Y
- SpecialOrder:Y