Gibson 310001 Power Tip Clamp-On Stainless Marine Muffler 4" Inlet -Pair J2005

Vehicle Fitment

• Universal -- fits any marine vessel requiring a 4 in. inlet exhaust muffler
• Compatible with inboard and stern-drive marine engines
• Verify exhaust outlet diameter and transom clearance before ordering

Fitment Notes

• 4 in. center inlet/outlet -- verify exhaust pipe diameter before ordering
• OEM-style transom or clamp-on mount -- no drilling required
• Sold as a pair -- two mufflers per listing
• Water-cooled design -- requires wet exhaust system

Features

• Proven to reduce sound to within California SAE J2005 88 dB limit
• Straight-through design -- no horsepower loss
• Tested on 496, 525, and 575 hp marine engines
• Flow-tested for maximum effectiveness
• Uses water to dampen exhaust sound
• Rolled edge tip design
• High quality stainless steel construction
• Clampless installation -- simple bolt-on fitment
• 1-year limited warranty

Specifications

• Part Number: 310001
• Series: Power Tip Marine
• Type: Clamp-on marine muffler
• Inlet/Outlet Diameter: 4 in. (center)
• Body Diameter: 9.25 in.
• Overall Length: 6.75 in.
• Material: Stainless steel
• Mount Type: Clamp-on / OEM transom
• Sound Rating: ≤88 dB (SAE J2005 compliant)

Included Components

• 2x Gibson Power Tip stainless marine mufflers (sold as a pair)

Product Description

The Gibson 310001 is a Power Tip clamp-on marine muffler set for inboard and stern-drive marine applications, sold as a pair. With a straight-through design and 4 in. center inlet/outlet, these mufflers are proven to deliver no measurable horsepower loss while reducing exhaust sound to within the 88 dB limit required by California's SAE J2005 Motorboat Sound Law. Gibson tested them on engines ranging from 496 to 575 hp for confirmed real-world performance.

The water-cooled design uses exhaust water flow to dampen sound naturally, and the clampless installation system makes fitment straightforward without drilling. Built from high-quality stainless steel with a rolled-edge tip finish. Backed by Gibson's 1-year limited warranty.