Diamond Eye K4110A-RP 4" Aluminized Cat-Back Exhaust for 01-05 Duramax

Vehicle Fitment

• 2001-2005 Chevrolet Silverado 2500 HD (6.6L Duramax LB7/LLY) - Cat-back exhaust
• 2001-2005 Chevrolet Silverado 3500 HD (6.6L Duramax LB7/LLY) - Cat-back exhaust
• 2001-2005 GMC Sierra 2500 HD (6.6L Duramax LB7/LLY) - Cat-back exhaust
• 2001-2005 GMC Sierra 3500 HD (6.6L Duramax LB7/LLY) - Cat-back exhaust

Features

• Diamond Eye Performance aluminized steel cat-back exhaust system
• 4" main tubing with single side exit for robust airflow and sound
• No muffler (straight-pipe) design to maximize exhaust flow
• Mandrel-bent tubing for smooth transitions and reduced backpressure
• Durable aluminized steel construction for corrosion resistance
• Direct bolt-on fitment with included clamps and hardware
• Produces a deeper, louder exhaust tone with a performance edge
• 1-year limited defect warranty from Diamond Eye Performance

Specifications

• Part Number: K4110A-RP
• Brand: Diamond Eye Performance
• Exhaust Type: Cat-back (muffler delete/straight pipe)
• Material: Aluminized steel
• Tubing Diameter: 4"
• Exit: Single side exit
• Fitment: 2001-2005 Silverado/Sierra 2500/3500 with 6.6L Duramax (LB7 & LLY)
• Includes: Exhaust piping, replacement pipe, clamps

Included Components

• 1x Aluminized steel 4" cat-back exhaust pipe (Diamond Eye K4110A-RP)
• Clamps and hangers for bolt-on installation

Product Description

The Diamond Eye **K4110A-RP** is a **4" aluminized steel cat-back exhaust system** designed specifically for 2001-2005 Chevrolet and GMC 2500/3500 HD trucks powered by the 6.6L Duramax diesel engine (LB7 and LLY variants). This "muffler delete" version replaces the factory cat-back system from the catalytic converter back with a straight-through pipe, maximizing exhaust flow and producing a deeper, more aggressive sound compared to stock systems. Because it omits a traditional muffler, it delivers a rawer tone and reduced restriction, which can slightly improve throttle response and overall exhaust efficiency without major tuning.

Construction from **durable aluminized steel** helps resist corrosion and environmental wear, while mandrel-bent tubing ensures smooth airflow and minimal backpressure. Designed for a **bolt-on installation**, the K4110A-RP comes with clamps and hangers for a straightforward swap on Silverado/Sierra 2500/3500 models across all cab and bed lengths. This system offers enthusiasts a performance-oriented exhaust upgrade with a commanding sound and improved exhaust flow - backed by a limited warranty from Diamond Eye Performance.