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Borla Performance Industries was founded in 1978 and remains America's premium cat-back exhaust brand. Every Borla system is hand-built from T-304 austenitic stainless steel and backed by a million-mile warranty — the OE choice for Camaro ZL1, Mustang GT350, and Chevy Corvette.
Take your exhaust system to the next level with the Borla ATAK Polyphonic Harmonizer (60680). Designed to replace the smaller muffler in your existing S-Type system, this unit is the key to achieving the legendary ATAK sound level—louder, bolder, and more aggressive. Borla’s patented Polyphonic Harmonizer technology uses pipes of varying lengths and diameters to create multiple exhaust notes that harmonize into a rich, full-bodied, and clean sound profile.
This component is the perfect upgrade for enthusiasts who want to transform their truck's personality. By replacing the secondary muffler with this harmonizer, you gain the volume and character of the ATAK system without sacrificing the quality of the sound. Trust in the world's most winning exhaust brand to deliver the performance you demand. Explore the full range of Borla performance parts at GGCRACING.
| Brand | Borla |
|---|---|
| Manufacturer part number | 60680 |
| GGC SKU | BOR60680 |
| UPC / GTIN | 808422606806 |
Use the manufacturer part number when you compare with other listings or ask us to confirm a match.
| Box size | 18.4 × 9.7 × 6.3 in |
|---|---|
| Shipping weight | 5.7 lb |
| Year | Make | Model | Trim |
|---|---|---|---|
| 2019-2026 | Chevrolet | Silverado 1500 | High Country, LTZ |
| 2020-2021 | Chevrolet | Silverado 1500 | Custom Trail Boss |
| 2020-2026 | Chevrolet | Silverado 1500 | LT Trail Boss, RST |
| 2022-2026 | Chevrolet | Silverado 1500 | ZR2 |
| 2019-2026 | GMC | Sierra 1500 | AT4, Denali, SLT |
| 2022-2026 | GMC | Sierra 1500 | AT4X, Denali Ultimate |
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