Thrush Glasspack Deep Performance Tone Silencer 2in Inlet/Outlet, Red Powder Coat, CRF Packing

Thrush Glasspack Deep Performance Tone muffler is a straight-through, vintage-style exhaust unit that maximizes flow while cutting interior resonance using Continuous Roving Fiberglass.

This Thrush Glasspack is built to give classic cars, muscle machines and trucks a bold, classic exhaust note while preserving power and minimizing cabin drone. The deep-tone design uses a straight-through path and exclusive CRF (Continuous Roving Fiberglass) packing to reduce unwanted vibrations, and its heavy-gauge steel shell with high-gloss red powder coat resists wear. Available with a 2" inlet and 2" outlet, this unit is part of a line of sizes and lengths intended for universal applications that may require welding or fabrication for installation.

What sound and character does this muffler produce?

The Thrush Glasspack Deep Performance Tone delivers a pronounced, vintage exhaust note that emphasizes low-end growl without excessive rasp. Its straight-through architecture keeps flow efficient so you get a fuller tone at idle and under load without choking back performance.

• Deep, classic muscle-car rumble tuned for low-frequency presence
• Clear tonal profile under throttle—less muddiness than baffled designs
• Maintains engine breathing thanks to straight-through flow

How does the CRF packing affect interior resonance and durability?

Continuous Roving Fiberglass (CRF) packing is designed to absorb internal resonance that causes cabin drone while remaining stable at exhaust temperatures. The CRF media reduces ringing and helps preserve the chosen tone longer than loosely packed materials.

• Absorbs unwanted resonance for reduced in-cabin vibration
• Engineered packing resists settling for consistent sound over time
• Non-baffled, straight-through core with CRF for cleaner acoustics

Will this fit my vehicle and how is it installed?

The 2" inlet and 2" outlet configuration is offered for universal fitment and works well with many classic cars and compact trucks, but installation often requires fabrication or welding for a perfect fit. Thrush supplies mufflers in multiple lengths and body diameters, so measure carefully and consult a shop if you're not set up for custom exhaust work.

• Universal-style fit; may need cutting, welding, or adapters
• Offered in multiple body sizes (3.5" or 4" available in the line)
• Check overall length and inlet/outlet placement before ordering

How long will the muffler last and what warranty applies?

The unit features a heavy-gauge steel shell finished in a high-gloss red powder coat to withstand road environments and resist corrosion longer than untreated steel. Thrush supports the product with a 90-day limited warranty and designs the shell thickness for improved longevity compared with light-duty alternatives.

• Durable heavy-gauge steel housing for enhanced strength
• High-gloss red powder-coat finish for corrosion resistance and appearance
• 90-day limited warranty from Thrush for initial coverage

Who is this for: The Thrush Glasspack Deep Performance Tone muffler is intended for enthusiasts driving muscle cars, vintage trucks, hot rods or custom builds who want a throaty, vintage exhaust note with strong flow characteristics. It's best suited to owners comfortable with custom exhaust fitting or who have access to a fabrication shop; if you want an off-the-shelf bolt-on part for a modern vehicle, check for vehicle-specific options or consult an installer.