RPM Powersports - Kawasaki Teryx 4 H2 / Teryx 5 H2 2.5" Full Exhaust System with Chambered Muffler + Optional E-Valve

RPM Powersports 2.5" Full Exhaust System for Kawasaki Teryx H2

Engineered and tested in-house by RPM Powersports, this full H2 exhaust system is designed for riders who demand superior performance, durability, and refined sound on the 250-horsepower supercharged 2026 Teryx H2 lineup.

Design & Engineering

The factory exhaust's restrictive 4-2-1 header and collector bottleneck the high exhaust gas flow generated by the centrifugal supercharger. Because the H2 forces air into the cylinders at up to 2.4× atmospheric pressure, the engine achieves an estimated volumetric efficiency of 120–140% under peak boost. This extra airflow means dramatically higher exhaust velocity, especially at high rpm where the supercharger's efficiency peaks.

The header features a precision laser-cut flange that is internally and externally TIG-welded for smooth transitions into the primary tubes. The optimally tuned primary tubes hug the back of the engine to reduce heat transfer into the cargo area. The primary tubes feed into a unique 4-1 cyclonic collector that manages the high exhaust flow rates of a supercharged engine.

Spherical composite graphite gaskets create a perfect seal at every mating surface while maintaining uninterrupted exhaust flow. Heavy-duty exhaust springs allow the exhaust to flex and move naturally during extreme abuse or rough terrain, preventing the cracks and leaks that rigid connections develop.

The header connects to large-radius, free-flowing 2.5" mid pipes. Choose the standard mid pipe or upgrade to the RPM E-Valve setup for on-demand sound control—quiet and refined when you want it, aggressive when you need it. Both mid pipe options include dual O2 bungs: one for the factory sensor and one M18 bung for wideband sensors during dyno tuning and data logging. An O2 bung plug is included.

The RPM Q-Series chambered muffler is engineered specifically for the H2's unique high-flow exhaust characteristics. It uses mechanical chambers and precise internal geometry for excellent sound control while flowing freely enough to support 300+ HP, ensuring it never becomes a restriction on stock or heavily boosted builds.

Key Features

• Proven Performance: +23 HP (?+11% gain) over stock baseline when paired with an RPM Carbon Intake and 91-octane tune. Tuning is not required but will maximize the benefits of the exhaust.
• Optimally Tuned Header Design with tuned primary tube lengths and diameter for maximum exhaust flow through the cyclonic 4-1 collector, matched to the supercharger's elevated exhaust mass flow and 120–140% VE.
• Spherical Composite Graphite Gaskets for perfect seal without interrupting flow and eliminating metal-on-metal contact.
• Heavy-Duty Exhaust Springs allowing natural flex during hard hits or rough terrain.
• Large-Radius 2.5" Mid Pipes fully free flowing with optional RPM E-Valve for on-demand sound control.
• Dual O2 Bungs at factory location plus M18 wideband bung (plug included).
• Quietest Q-Series Chambered Muffler tailored to the H2's supercharged flow dynamics; supports 300+ HP without restriction.
• Adjustable 304 Stainless Muffler Bracket for perfect centering in the rear fascia.
• Barbed-Head CNC Isolator Pins that lock securely into factory isolators.
• Spark Arrestor Ready and compatible with optional RPM spark arrestors.
• Optional Polished or Blued Tips for a sharper, more aggressive look.

Construction & Customization

Built with premium 304 stainless steel and TIG welded throughout for maximum strength and reliability. Run the system plain for a clean, stock-like appearance or add custom tips to make your Teryx H2 stand out on the trail or dunes. Thoughtfully engineered by riders, for riders—this is the most complete and refined full exhaust system available for the Kawasaki Teryx H2.

Performance Comparison

Note: All exhaust data is shown with an RPM carbon fiber intake and tune.