KTM 990 RC-R DUKE 2026+: RS22 DUEL UNDERSEAT SLIP ON

Description

2026+ KTM 990 RC-R – RS22 Underseat Slip-On Titanium dB Compliant Exhaust System

The RS22 Underseat Slip-On system has been developed specifically for the 2026 KTM 990 RC-R, delivering a sharp increase in sound, presence, and visual impact while retaining everyday usability.

Designed to work with the OEM headers, this system retains the factory catalytic converter and emissions equipment while keeping overall sound levels refined and road-friendly. The result is a lightweight, race-inspired upgrade that enhances the RC-R’s aggressive styling without compromising rideability or practicality.

Manufactured entirely from premium-grade titanium, this twin-exit underseat system is engineered to sit cleanly beneath the tail section and perfectly complement the RC-R’s sharp race geometry.

Tested and certified to UK dB conformity standards, compliant systems are supplied with a certificate and laser-etched eNumber on the silencer to assist with riding requirements throughout mainland Europe.

RS22

The RS22 is a twin-exit system featuring our signature cylindrical silencer design.

Features:

• Cylindrical can design
• Sharp, tuned motorsport-inspired exhaust note
• Available in 140mm sleeve length

RS22-V

The RS22-V uses a pair of V3 Mini silencers for a more aggressive visual profile and deeper sound character.

Features:

• Twin conical silencer design
• Deeper, fuller tone with increased bass response
• Available in 140mm or 200mm sleeve lengths

SM MINI PAIR

The SM Mini Pair is an all-new twin-exit configuration using dual SM Mini silencers.

Features:

• Brand new compact silencer design
• Deep, tuned exhaust note
• Available in 140mm or 200mm sleeve lengths

Specifications

✔ Full Titanium Construction – Precision hand-crafted for reduced weight and durability.
✔ Advanced Flow Dynamics – Optimised for improved throttle response and exhaust efficiency.
✔ No ECU Remap Required – Designed to operate with the OEM headers and catalytic converter.
✔ Includes Twin End Cans – Complete underseat twin-exit system supplied.
✔ Full Fitting Instructions Included – Straightforward bolt-on installation.
✔ Compatible with OEM Passenger/Pillion Pegs.
✔ Compatible with stock headers only.
✔ Fixed internal dB control design.
✔ Not compatible with removable dB killers.

Weight Savings

• Stock Silencer: 3.75kg
• Austin Racing RS22 Slip-On: 0.8kg
• Total Weight Saving: 2.95kg

dB Levels

Tested at 4,700 RPM

Slip-On Systems:

• Stock – 92dB
• RS22 140mm – 92dB
• RS22-V 140mm – 91dB
• RS22-V 200mm – 91dB
• SM Mini 140mm – 91dB
• SM Mini 200mm – 91dB

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: These replace the bike’s original muffler, leaving the mid-section (catalytic converter) and headers untouched. Slip-ons are a straightforward option to enhance sound and aesthetics.
2. De-cat Systems: A decat system replaces both the muffler and the mid-section (catalytic converter), while keeping the original OEM headers in place. This offers improved performance and a noticeable weight reduction.
3. Full Systems: A full system replaces all three components: the muffler, mid-section (catalytic converter), and headers. This provides a complete overhaul for maximum performance and weight savings.

Each system is designed to cater to different performance, sound, and aesthetic goals. If you’re unsure which option suits your needs, feel free to reach out — we’re here to help!

Design Updates: As each exhaust is handmade to order, our designs are constantly evolving to incorporate improvements. As a result, the final product may vary slightly from the pictures shown. These differences are typically very minor and represent the ongoing enhancements we make to ensure the highest quality. This adaptability is one of the unique benefits of owning a handcrafted exhaust.