High-quality aluminum and a silicone magnetic steel core provide shock and vibration resistance while increasing thermal conductivity to ensure superior engine performance. Engineered with high-temperature epoxy to withstand harsh temperature conditions supplying higher energy outputs, quicker starts and improved idle quality. Each ignition coil is precision wound and trimmed to ensure precise spark timing response for increased engine performance and optimized fuel efficiency. Advanced bobbin technology, highly specialized silicone magnetic steel core along with optimized winding provide an accurate high energy output for increased engine performance.