O.S .91 - .105 Vortex Edition Exhaust Header

Absolute CNC Products – Vortex Edition Exhaust Header
Compatible with O.S. Engines (.91 – 1.05 Size)

Unleash your engine’s full potential with the Vortex Edition Exhaust Header from Absolute CNC Products. Precision CNC-machined from aerospace-grade 7075 billet aluminum, this high-performance header is built to handle extreme heat and pressure while maintaining strength and durability under the most demanding flight conditions.

At the core of the design is our signature Vortex geometry, a performance-driven innovation that starts the tuning process directly at the engine port. This soft-mount style header maximizes exhaust flow and optimizes backpressure to support a broad, usable powerband—giving your O.S. engine the torque, throttle response, and RPM range it was designed to deliver.

Each Vortex header is crafted with fully radiused O-ring grooves for superior sealing and long-term reliability. Designed with tunability in mind, it’s the ideal foundation for any high-output exhaust system and a perfect pairing with the Absolute CNC “Power Pipe” muffler or other performance exhausts.

In addition, the Vortex Edition Header is fully compatible with Hatori mufflers, giving new life to an already legendary product. While Hatori is no longer in business, we proudly support their legacy by continuing to offer precision parts that enhance and extend the performance of their systems.

✅ Included as Standard: Every Absolute CNC Power Pipe comes with a Vortex Edition Header, so you're ready to bolt on high performance right out of the box.

Key Features:

• Compatible with O.S. .91 and 1.05 size engines
• Soft-mount design begins tuning at the engine interface
• CNC-machined from 7075 billet aircraft aluminum
• Engineered for maximum flow and optimal backpressure
• Radiused O-ring grooves for enhanced sealing and longevity
• Compatible with Hatori mufflers—enhancing performance while supporting their legacy
• Built for aggressive 3D and high-load applications

Proven Performance On:

• O.S. 91 Speed
• O.S. 105

*HEADER ONLY, ENGINE AND ACCESSORIES NOT INCLUDED*