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Replace the Polyphonic Harmonizer behind the muffler in a BORLA® ATAK® system with this 3.5" diameter muffler to achieve the S‑Type sound level — a quieter, more refined tone than ATAK®.
*Can be used in select BORLA® GM truck ATAK® sound level systems to attain the S-Type sound level. Replaces the Polyphonic Harmonizer behind the muffler. Compatible with 2019–2026 Chevrolet Silverado 1500 and GMC Sierra 1500 6.2L V8 with automatic transmission, 2WD and 4WD, when used with the BORLA® ATAK® Cat-Back™ system.
| Transmission | Automatic |
| Sound Level | Moderate |
| Submodel | 6.2L V8 Gas |
| Series | S-Type |
| Drive Type | 4WD, RWD |
| Brand | Borla |
| Box Weight | 10 lbs |
| Box Length | 24 in |
| Box Width | 10.9 in |
| Box Height | 10.3 in |
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Fitment
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2020||Chevrolet||Silverado 1500, 2020||GMC||Sierra 1500, 2021||Chevrolet||Silverado 1500, 2021||GMC||Sierra 1500, 2019||Chevrolet||Silverado 1500 New Model, 2019||GMC||Sierra 1500 New Model, 2022||Chevrolet||Silverado 1500, 2022||GMC||Sierra 1500, 2023||GMC||Sierra 1500, 2022||Chevrolet||Silverado 1500 New Model, 2023||Chevrolet||Silverado 1500, 2024||Chevrolet||Silverado 1500, 2024||GMC||Sierra 1500, 2025||Chevrolet||Silverado 1500, 2025||GMC||Sierra 1500, 2022||GMC||Sierra 1500 New Model, 2026||GMC||Sierra 1500, 2026||Chevrolet||Silverado 1500
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