🔥 Unlock Your Truck’s Hidden Power

Upgrade your GMC or Chevy truck/SUV with our 5-piece stainless steel shorty headers and Y-pipe kit, precision-engineered for GMT800 platform vehicles (1999–2006). Designed specifically for 4.8L and 5.3L V8 engines, this kit improves exhaust flow, reduces backpressure, and delivers real gains in horsepower, torque, and throttle response — plus a bold, performance-driven exhaust tone.

💪 Performance Features

• Optimized 4-1 Header Design
  Replaces restrictive factory manifolds with smooth-flowing shorty headers that allow exhaust gasses to exit faster and more efficiently.

• Dyno-Proven Gains
  Reduces cylinder backpressure, increases exhaust gas velocity, and improves scavenging for a noticeable bump in both horsepower and torque.

• Aggressive Exhaust Note
  Unlocks the growl of your V8 with a deeper, throatier sound under acceleration.

• Premium Craftsmanship
  Constructed from T-304 stainless steel with TIG & MIG welded CNC flanges, and polished finish for superior corrosion resistance and long-lasting durability.

📐 Specifications

• Condition: 100% Brand New

• Color: Identical to images shown

• Fitment Type: Performance / Custom

• Material: High-Quality T-304 Stainless Steel

• Header Outlet Size: 3.00"

• Aluminum Charge Pipe Diameter: 3.75" (Inlet/Outlet)

• High-Temperature Silicone Hose Size: 3.75" (Inlet/Outlet)

• Exhaust Header Inlet/Outlet: 1.875" (8 × Manifold Ports) / 2.5" (Outer Diameter)

• Main Piping Diameter: 2.5"

• Air Filter Size: Inner Diameter – 4.00" / Total Height – 10.50"

🚗 Vehicle Fitment

Chevrolet

• Avalanche 1500 (2002–2005) – 5.3L

• Silverado 1500 (1999–2005) – 4.3L / 4.8L / 5.3L / 6.0L

• Suburban 1500 (2000–2004) – 5.3L / 5.7L

• Tahoe (2000–2004) – 4.8L / 5.3L / 5.7L

GMC

• Sierra 1500 / 2500 (1999–2005) – 4.3L / 4.8L / 5.3L / 6.0L

• Yukon / Yukon XL 1500 (2000–2004) – 4.8L / 5.3L / 6.0L

⚠️ Note: Does not fit 2003 GMC Yukon SLT 5.3L Sport Utility 4-Door.

📦 Package Includes

• 2 × Stainless Steel Shorty Headers (Driver + Passenger Side)

• 1 × Y-Pipe Section

• 2 × Exhaust Collector Pipes

• Gaskets & Mounting Hardware (if pictured)

    Package size    35.04*15.75*8.66 in（88.9 x 66.04 x 17.78 cm）        
     Weight    48.1 lb（21.82 kg        

⚠️ Important Notes

• Professional Installation Recommended – No installation instructions provided

• Track/Off-Road Use Only – May not be emissions compliant in all states

• ⚠️ Prop 65 Warning: This product may contain chemicals known to the State of California to cause cancer or reproductive harm.
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🏁 Unleash the full potential of your GMT800 V8 engine — Experience better flow, more power, and that perfect exhaust growl. Perfect for performance builds, off-road enthusiasts, and anyone looking to level up their truck or SUV.