The Borla S-Type cat-back exhaust system is made for the 2021+ Chevrolet Tahoe, 4WD. Fitted behind the catalytic converter in place of the stock exhaust, it is a 3-inch T-304 stainless steel system that splits into dual 2.75-inch pipes ending in black chrome tips at the S-Type sound level. The system is built to run with no drone inside the vehicle.
Part number: 140857BC
Borla cat-back exhaust system.
A cat-back system replaces everything behind the catalytic converter and leaves emissions equipment in place.
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Manufacturer data for this part — all visible, no tabs to dig through.
| Brand | Borla |
| Part number | 140857BC |
| Material | T-304 Stainless Steel |
| Shipping carton | 59.5 × 18 × 17 in (151 × 46 × 43 cm) |
| Shipping weight | 27.4 kg (60.3 lb) |
| Grade type | Performance |
| Construction | All Welded |
| Category | Exhaust & Performance |
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