Leadgee 3" Exhaust Resonator — 9" Stainless Steel, 3" Inlet/Outlet, Polished Finish for Reduced Cabin Drone

Leadgee's 3" inlet & outlet stainless steel exhaust resonator is a 9" straight-through, center-mounted muffler engineered to reduce interior resonance and deliver a lower, deeper exhaust tone while fitting universally on 3" exhaust pipes.

This compact, high-quality resonator from Leadgee is built with stainless steel and CRF (Continuous Roving Fiberglass) packing to tame unwanted resonance without radically altering backpressure. With a polished, brushed finish and a 4" round body, it’s intended as a weld-on, long-lasting addition for custom exhaust systems, mid-pipes, or as an upgrade to factory resonators.

How does this resonator change exhaust sound and interior resonance?

The Leadgee resonator targets and absorbs specific frequencies that cause droning and harsh resonance inside the cabin, producing a smoother, lower note. It’s not a straight performance muffler for big horsepower gains; it’s designed to refine tone and reduce unpleasant harmonic noise.

• Continuous Roving Fiberglass packing for targeted sound absorption
• Straight-through design preserves exhaust flow characteristics
• 4" round body shape tuned for mid-range resonance control
• Polished exterior for a clean, OEM-plus appearance

Will this fit my vehicle’s exhaust system?

The resonator fits any exhaust with a 3" inner diameter inlet and a 3" outlet—both ends are identical so orientation doesn’t matter. Because it’s a universal weld-on part, installers weld it directly into the exhaust piping; matching pipe diameter and proper welding are essential for a secure fit.

• Inlet: 3" inner diameter — Outlet: 3" inner diameter
• Overall length: 9" — body length: 6.5"
• Universal straight-through center design for 3" systems
• Weld-on installation; professional fitting recommended

What materials and construction does it use for durability?

Leadgee made this resonator from stainless steel for corrosion resistance and longevity in undercarriage environments. The internal CRF packing is chosen to absorb resonance while the brushed/polished finish helps resist surface corrosion and provides a durable external look.

• Stainless steel shell for rust resistance and strength
• CRF (Continuous Roving Fiberglass) internal packing for sound control
• Brushed-polished finish for durability and appearance
• Welded-on design intended for permanent installations

How should this resonator be installed and maintained?

Installation requires welding to your existing 3" exhaust pipe; because instructions are not supplied, skilled welding and alignment are recommended. After installation, periodic inspections ensure weld integrity and check for surface corrosion or packing degradation over many miles.

• Weld-on installation—professional installation strongly recommended
• Check weld seams after initial heat cycles and every service interval
• Keep the exterior clean to spot any surface corrosion early
• Compatible with custom mid-pipes, aftermarket systems, and resonator replacements

Who is this for: The Leadgee 3" resonator suits car and truck owners, fabricators, and performance shops seeking a compact, durable resonator to remove cabin drone and smooth mid-range exhaust tone without major backpressure changes. It’s ideal for custom exhaust builds, replacing failing factory resonators on 3" systems, or for tuners who want a cleaner, deeper sound with a polished finish.