FIRE Springs are MADE IN THE USA by US workers
The kit consists of 5 levels of spring strengths in hammer springs and 6 valve springs making 30 combinations for tuning. All springs are made from music wire.
The comparison chart will show the +/- relative to the FIRE spring. Example if it shows "Blue - / Green +" then it means the FIRE Blue spring is softer and Fire Green spring is harder than the comparative.
- Hammer springs are 2" in length
- Note: Adjust you IVG to 1.5-2 turns in form flush as a general rule of thumb
- Valve springs are 1-1/4" in length