Diamond Eye Manufacturing K4214A-HX40-RP 4" Turbo-Back Exhaust Kit for HX40 Turbo

The Diamond Eye Manufacturing K4214A-HX40-RP is a 4-inch turbo-back exhaust kit engineered for diesel applications running the Holset HX40 turbocharger. Diamond Eye is a leading U.S.-based manufacturer of performance diesel exhaust systems, known for mandrel-bent aluminized and stainless steel construction that delivers superior flow and long-term durability.

This kit is designed to replace the restrictive factory exhaust system with a free-flowing 4-inch diameter pipe system, reducing back pressure, improving exhaust gas evacuation, and unlocking additional horsepower and torque potential in performance or modified diesel trucks.

Key Features:

• 4-inch diameter exhaust tubing for maximum flow and reduced backpressure
• Designed specifically for use with the Holset HX40 turbocharger outlet
• Mandrel-bent tubing preserves consistent inner diameter throughout bends
• Heavy-duty aluminized or stainless steel construction for corrosion resistance and longevity
• Includes all necessary hardware, clamps, and components for a complete installation
• Bolt-on fitment for straightforward installation
• Race pipe (RP) configuration for high-performance diesel builds

Diamond Eye exhaust systems are manufactured in the USA and are a popular choice for performance diesel enthusiasts and competitors seeking reliable, high-quality exhaust upgrades for their Cummins-powered trucks.