Pacemaker Twin 2.5" Performance Exhaust System with 1-3/4" Headers for HSV VE E-Series E1 6.0L LS2 V8 Sedan 2006–2009 - PP5381-12

Pacemaker Full Twin 2.5" Performance Exhaust System with 1 3/4" 4-into-1 Tuned Headers & Hi-Flow Cats for HSV VE E-Series E1 Sedan (6.0L Gen IV LS2 V8) - PP5381-12

Unleash significant torque fields, optimize mid-to-high RPM cylinder scavenging, and deliver an aggressive, deep Australian V8 muscle note from your small-block engine with the Pacemaker Sport Systems complete twin 2.5-inch performance exhaust solution featuring 1 3/4" 4-into-1 tuned primary extractors. Meticulously engineered to balance optimal exhaust gas velocity tracking with excellent total volumetric flow, this 1 3/4" primary setup serves as the ideal high-efficiency configuration for standard to moderately modified or daily-driven street performance builds. Specifically configured for the high-performance 6.0L Gen IV LS2 V8 engine architecture, this premium full system is precision-molded to trace the sedan floor pan lines, clear standard wheelbase chassis channels, and map perfectly around the multi-link independent rear suspension geometry of the VE series HSV architecture. By upgrading your stock layout to high-flow 4-into-1 headers paired with smooth, mandrel-bent twin 2.5" plumbing and 3" high-flow metallic catalytic converters, it maximizes gas velocity tracking to completely eliminate power-robbing backpressure under heavy acceleration. As Australia’s premium exhaust innovator, Pacemaker integrates elite structural engineering with patented V-Tex technology and signature double-skinned mufflers, producing an authoritative performance roar on throttle while actively engineering out harsh interior cabin boom or sedan body resonance to preserve a completely clean, drone-free highway cruising experience.

Note: Fits HSV VE E-Series E1 Sedan variants built from September 2006 to August 2009 equipped with the 6.0L Gen IV LS2 V8 engine layout; does not fit Utility (Ute), Sportwagon, or long-wheelbase Grange platforms due to structural floor pan and rear assembly differences.

Features:

Precision-manufactured in Australia to deliver a high-velocity flow upgrade, maximum structural longevity under intense heat, and a refined performance acoustic profile for the iconic VE sedan platform.

• Complete Performance Kit: Comprehensive track-and-street performance solution incorporating high-flow 1 3/4" 4-into-1 headers, 3" metallic high-flow catalytic converters, and a full matching twin 2.5-inch performance intermediate-to-rear exhaust layout.
• 1 3/4" 4-into-1 Design Architecture: Tuned extractor layout featuring high-velocity 1 3/4" primaries running into a merged collector to optimize mid-range torque retention and unlock seamless high-RPM power gains on street-driven applications.
• Premium Materials: Constructed completely from durable, heavy-gauge Exhaust Grade 409 Stainless Steel to ensure superior structural longevity and resistance to thermal fatigue under extreme loads.
• Mandrel Bent Tubing: Rigid twin 2.5" (63.5mm) pipe structure guarantees a smooth, uniform internal diameter through all bends to eliminate gas turbulence and prevent restriction.
• V-Tex Technology: Advanced internal patented anti-drone configuration filters out harsh, low-frequency cabin resonance typical of sports layouts without creating any power-robbing flow restrictions.
• Signature Mufflers: Heavy-duty double-skinned 409 Stainless Steel mufflers offer premium outer case reinforcement, preventing case distortion and internal packing blowout under heavy thermal load constraints.
• Direct Bolt-On Layout: Engineered as a comprehensive, vehicle-specific full bolt-up kit that mounts directly onto existing factory rubber hanger positions—no custom fabrication required.

Vehicle Applications:

Important Fitment Notes:

• Specifically engineered to fit HSV VE E-Series E1 Sedan variants powered by the 6.0L Gen IV LS2 V8 engine built from September 2006 to August 2009.
• Sedan Specific Routing Geometry: Due to underbody cavity clearances, standard wheelbase dimensions, and unique factory rubber insulation paths matching the sedan rear subframe assembly, this configuration features chassis-specific intermediate plumbing lengths. It will not adapt correctly to Utility (Ute / Maloo), Sportwagon, or long-wheelbase Grange platforms due to structural floor pan differences.
• The 1 3/4" tuned primary header tubes are custom-formed to step up engine torque fields and lower-end exhaust velocity response metrics, establishing this kit as an exceptionally premium alternative for high-performance daily drivers and street cars.
• Full kit scope: Comprehensive high-efficiency performance solution from engine block to rear exit, including 1 3/4" primary headers, premium 3" high-flow metallic catalytic converters, twin 2.5" intermediate plumbing paths, and a signature double-skinned rear sedan muffler assembly.
• Direct bolt-up architecture interfaces seamlessly with original vehicle-specific rubber hanger brackets. No custom modification or cutting layout mapping is required.
• Professional automotive performance technician installation is highly recommended to guarantee ideal ground clearance, check tight steering column tolerances, and secure gas-tight seals under the floor pan.

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