CORSA 14260 3" Sport CatBack Exhaust System for 99-06 Silverado/Sierra 5.3L V8

Vehicle Fitment

• 1999-2006 Chevrolet Silverado 1500 (4.8 L & 5.3 L V8; 143.5" wheelbase)
• 1999-2006 GMC Sierra 1500 (4.8 L & 5.3 L V8; 143.5" wheelbase)

Fitment Notes

• Single-side exit, Sport-level cat-back exhaust with twin 4.0" Pro-Series tips
• Designed for 143.5" wheelbase Crew Cab/Short Bed or Extended Cab/Standard Bed
• Direct bolt-on installation using factory hangers--no welding or cutting required

Features

• 3.0" mandrel-bent T-304 stainless steel main tubing
• Sport sound profile: aggressive under throttle, quiet at cruise thanks to RSC® technology
• Dual-wall polished or Black PVD twin 4.0" Pro-Series tips
• Flows ~60% better than stock--dyno-proven performance gains (+7 hp / significant flow)
• Lightweight construction--reduces weight vs OEM
• U.S.-made with premium materials and precision craftsmanship
• Backed by CORSA's limited lifetime warranty

Specifications

• Part Number: 14260
• Main Tube Diameter: 3.0"
• Tip Size: 4.0" dual-wall Pro-Series (pair)
• Material: T-304 stainless steel
• Sound Level: Sport (quiet cruise, throaty under load)
• Performance Gain: +7 hp
• Flow Improvement: ~60%
• Warranty: Limited lifetime (structural)

Included Components

• 1x Complete 3.0" Sport cat-back exhaust system
• 2x 4.0" dual-wall Pro-Series tips (polished or Black PVD)
• All required clamps, hangers, hardware, and installation guide

Product Description

The CORSA 14260 Sport cat-back exhaust is a direct-fit performance upgrade for 1999-2006 143.5" wheelbase Silverado/Sierra trucks with 4.8 L or 5.3 L V8 engines. Featuring mandrel-bent 3.0" T-304 stainless tubing and twin 4.0" Pro-Series tips, it delivers a confident, sporty exhaust note under load while remaining smooth and quiet at cruising speeds thanks to CORSA's Reflective Sound Cancellation® (RSC) technology.

With dyno-proven gains of approximately +7 hp, 60% better flow than stock, and lightweight construction, this bolt-on system enhances both performance and aesthetics. Easy to install using factory hangers with no cutting or welding, and all backed by a limited lifetime warranty--it's an ideal upgrade for truck owners who want power, sound, and style in one package.