Vibrant ULTRA QUIET Resonator - 2.25" Inlet/Outlet | 14" Overall Length | Oval Body | 304 Stainless (1140)

Tame your exhaust note without sacrificing flow with the Vibrant ULTRA QUIET resonator. Featuring a larger-than-standard sound chamber, premium multi-layered sound absorption packing, and 304 stainless steel construction, the ULTRA QUIET resonator provides superior sound reduction compared to standard resonators — ideal for custom exhaust builds where maximum noise attenuation is the priority.

Resonator Specifications:

• Inlet I.D.: 2.25"
• Outlet I.D.: 2.25"
• Overall Length: 14"
• Body Shape: Oval
• Material: 304 stainless steel
• Sound Absorption: Multi-layered premium packing
• Sound Chamber: Larger than standard Vibrant resonators
• Weight: 5.6 lbs

Key Features:

• ULTRA QUIET designation — larger sound chamber than standard Vibrant resonators
• Densely packed multi-layered sound absorption material
• Oval body for low-profile undercarriage fitment
• 2.25" inlet and outlet I.D.
• 304 stainless steel construction
• Universal fitment for custom exhaust fabrication
• Vibrant Performance quality and engineering

Performance Benefits:

• Superior Sound Reduction: Larger sound chamber provides greater noise attenuation than standard resonators
• Multi-Layer Packing: Premium packing absorbs exhaust sound across a broad frequency range
• Low Profile: Oval body fits in tight undercarriage spaces
• Corrosion Resistance: 304 stainless resists rust, road salt, and exhaust condensate
• Flow Efficient: Straight-through design minimizes backpressure while maximizing sound reduction

Fitment Information:

• Universal fitment — designed for custom exhaust fabrication
• Inlet/Outlet: 2.25" I.D. — fits 2.25" O.D. exhaust tubing
• Overall length: 14" — verify available space in your exhaust routing before ordering
• Note: Measure your available undercarriage space before ordering to ensure the resonator fits your exhaust layout

What's Included:

• Vibrant ULTRA QUIET resonator (1140)
• Note: Inlet/outlet clamps or welds required for installation

What is a Resonator — and How Does It Differ from a Muffler?

A resonator is an exhaust component that uses acoustic principles to cancel specific exhaust sound frequencies, reducing exhaust drone and refining the exhaust note. Unlike a muffler, which uses packing material and baffles to absorb and redirect exhaust sound energy broadly, a resonator is tuned to target specific frequency ranges — typically the mid-range drone frequencies that become fatiguing at highway speeds. Resonators are commonly used in conjunction with a muffler in a custom exhaust system, with the resonator handling drone reduction and the muffler handling overall volume reduction. On their own, resonators provide less overall volume reduction than mufflers but are more effective at eliminating specific tonal characteristics.

ULTRA QUIET — Larger Sound Chamber:

Vibrant's ULTRA QUIET resonators feature a larger internal sound chamber than their standard resonator lineup. A larger chamber provides more volume for exhaust sound energy to expand and dissipate, increasing the resonator's effectiveness at reducing exhaust noise across a broader frequency range. The ULTRA QUIET designation indicates this resonator is specifically engineered for applications where maximum sound reduction is the priority — such as builds that need to meet noise regulations, daily-driven vehicles where exhaust drone is unacceptable, or builds where a very quiet exhaust note is desired despite using performance exhaust components elsewhere in the system.

Multi-Layer Sound Absorption Packing:

The ULTRA QUIET resonator is densely packed with Vibrant's premium multi-layered sound absorption material. This packing works in combination with the larger sound chamber to absorb exhaust sound energy that passes through the resonator. The multi-layer construction provides more effective and durable sound absorption than single-layer packing — single-layer packing can blow out over time under sustained high-temperature exhaust flow, reducing the resonator's effectiveness. Vibrant's multi-layer approach ensures consistent sound absorption performance over the resonator's service life.

Oval Body — Low Profile:

Like Vibrant's StreetPower muffler series, the ULTRA QUIET resonator uses an oval body for low-profile undercarriage fitment. The oval cross-section allows the resonator to fit in spaces where a round resonator of equivalent internal volume would not, making it a practical choice for lowered vehicles and builds with limited undercarriage clearance. The oval body provides the internal volume needed for the ULTRA QUIET's larger sound chamber while keeping the overall height of the resonator compact.

Resonator Placement in a Custom Exhaust System:

In a custom exhaust system, the resonator is typically placed in the mid-pipe section — between the catalytic converter (or downpipe on turbocharged vehicles) and the muffler. This placement allows the resonator to address drone and tonal characteristics before the exhaust reaches the muffler, where overall volume is reduced. Some builds use a resonator in place of a muffler for a louder overall system with reduced drone, while others use both a resonator and a muffler for maximum sound refinement. The 14" overall length of the VIB1140 must be accommodated in your exhaust routing — plan your exhaust layout carefully to ensure the resonator fits between your connection points.

2.25" Pipe Sizing:

The 2.25" inlet and outlet I.D. is sized for 2.25" O.D. exhaust tubing, a common size for naturally aspirated 4-cylinder and smaller displacement performance applications. Vibrant offers the ULTRA QUIET resonator in inlet/outlet sizes from 2.25" to 3" to cover a range of exhaust system sizes. For builds using larger diameter piping (2.5", 3"), select the appropriate ULTRA QUIET resonator size to match your exhaust system's pipe diameter.

Why Vibrant Performance?

Vibrant Performance is a Canadian manufacturer of high-quality exhaust components, fittings, and fabrication hardware, trusted by professional exhaust fabricators and enthusiasts worldwide. Their ULTRA QUIET resonator series is a popular choice for custom exhaust builds where sound refinement is a priority, known for consistent quality, correct dimensions, and effective noise reduction. Vibrant's commitment to quality construction and engineering makes them one of the most trusted names in custom exhaust fabrication components.

Perfect For:

• Custom exhaust builds requiring maximum drone reduction with 2.25" piping
• Daily-driven performance builds where exhaust drone at highway speeds is unacceptable
• Builds needing to meet noise regulations while retaining performance exhaust components
• Lowered vehicles needing a low-profile oval resonator for undercarriage clearance
• Any 2.25" custom exhaust system requiring superior sound attenuation from a quality resonator

Perfect For: Custom exhaust fabrication on 2.25" systems requiring maximum sound reduction — Vibrant ULTRA QUIET resonator with larger sound chamber, multi-layer packing, oval body, and 304 stainless construction.

Pro Tip: Pair the ULTRA QUIET resonator with a Vibrant StreetPower muffler for a complete custom exhaust system with both drone reduction (resonator) and overall volume control (muffler) — the combination provides the most refined exhaust note possible from a performance exhaust system.

2.25" In/Out | 14" Overall | Oval Body: ULTRA QUIET larger sound chamber. Multi-layer packing. 304 stainless. Universal. 5.6 lbs. Verify routing space before ordering.

Eliminate exhaust drone with Vibrant ULTRA QUIET — larger sound chamber, multi-layer packing, oval body, 2.25" inlet/outlet, 304 stainless construction.