4" Stage One HIPO Muffler For Water Injected Headers 

4" Stage 1 HIPO Muffler For Water Injected Headers

The Stage 1 Silencer Muffler is a state of the art design developed with years of testing to quiet high performance motors in order to meet the new stringent sound regulations. The Stage 1 Silencer is designed to keep you on the lake without loss of major horsepower. It reduces noise to the low 80 decibels with idle at 800 RPMs in motors up to 600 horsepower with a loss in horsepower of only 3% - 5%. Made from 100% Stainless Steel. Easy installation; just attach one bolt and you are ready to go. So, Stay on the Lake with Power to Spare.

• 100% Stainless Steel.
• Decibel: Stock to 600 hp in low 80 decibels with idle at 800 RPMs
• Works with higher horsepower motors, but decibel levels may increase
• Perforated Tube with Internal Baffle, Packed with Stainless Steel Wool
• Mufflers are 3-7/8" O.D. x 10-1/2" long
• Fits in 4" and belled 5-1/8" x 16 gauge Collectors
• Does not fit on 4" x .083" 14 gauge wall tubing
• Installation Kit included; two bolts, two spacers, two washers, and two nuts to attach both mufflers
• Two Mufflers per set