YAMAHA R9 2025: Low De-cat System & Full System

Description

2025+ Yamaha R9

Low De-cat & Full Exhaust System – GP1R

Give your Yamaha R9 the performance boost and aggressive edge it deserves with our GP1R Low-Mounted Exhaust System, available as both a De-cat and Full System. This setup offers serious weight savings, a deep race-tuned sound, and noticeable power gains—all crafted in premium titanium.

GP1R Silencer Options:

• Cylindrical design with angular tip

• Available in full titanium or carbon sleeve (carbon over titanium – built to last)

• Loud, crisp race-inspired sound

Shared Features:

• Full Titanium Construction: Lightweight, durable, and built for performance

• Advanced Flow Dynamics: Designed for smoother exhaust flow and sharper throttle response

• Power Gains: Increases of 2–4 bhp without remap

• No Tuning Required: However, adding an UpMap, race ECU, or mapped PCV will maximise performance

• Full Instructions Supplied

System Options:

Full System

• Replaces headers, mid-section, and muffler

• No modifications required

• Weight: 2.2kg (compared to 7kg stock)

• Noise Level @ 4500 RPM: 107 dB

Low De-cat System

• Replaces catalytic converter and muffler

• Requires cutting the stock headers

• Noise Level @ 4500 RPM: 104 dB

Noise Levels for Reference (Tested at 4500 RPM):

• Stock: 96 dB

• GP1R De-cat: 104 dB

• GP1R Full System: 107 dB

Important Notes:

Road Use: Non-homologated exhaust systems may not comply with local road regulations and are intended for race use only. Noise levels can vary significantly, from standard to extremely loud. Please review the specifications carefully before ordering. If you have any questions or need assistance, feel free to contact us.

Build Times: Our exhausts are built to order, with delivery times ranging from 6 to 10 weeks for standard systems and 10 to 15 weeks for more complex full systems. For the latest estimated delivery times, please visit Current Build Times. These timeframes reflect the handcrafted nature of our exhausts, which are produced by a small team in the UK, as well as the high demand for these limited products.

Exhaust Types:
We offer three types of exhaust systems:

1. Slip-On Exhausts: Replace the bike’s original muffler, retaining the mid-section and headers.

2. De-cat Systems: Replace the muffler and catalytic converter, keeping OEM headers in place.

3. Full Systems: Replace the muffler, mid-section, and headers for maximum performance and weight savings.

Each system is designed to suit different performance and sound preferences. If you’re not sure which setup is best for your needs, we’re happy to help.

Design Updates: All exhausts are handmade to order and constantly refined. The final product may vary slightly from images shown, reflecting ongoing design improvements.