Thunder Products TPI Valve

Details

• TPI valve works with your air box lid to add air when you need it, and keep the intake stock when you don't.
• 2 5/8" square TPI valve filters air and vent size is adjustable.
• Comes with a black medium filter, mounting hardware and instructions.
• One TPI valve is adequate for most machines but for machines with engines 500cc and over, or with highly modified engines two valves work best.