YAMAHA MT09 (2024+) SLIPSTREAM EXHAUST SYSTEM

Track-inspired design. Street-ready performance.

The 2024+ Yamaha MT09 takes the CP3 platform in a sharper, more refined direction with a lighter chassis, improved electronics, and a more connected ride feel. But like every factory CP3 exhaust, the stock system still compromises sound, weight, and overall presence.

The Kelpi Slipstream exhaust system redefines how a track-inspired exhaust should sit under the bike.

Designed with a tighter, more underslung layout than our traditional CP3 system, Slipstream pulls everything further inboard tighter under the engine for a cleaner, more integrated finish, all while unlocking the unmistakable character of Yamaha’s triple.

Expect a raspier, more purposeful tone, stronger midrange drive, sharper throttle response, and a noticeable weight saving over the bulky factory unit.

Kelpi Slipstream vs Kelpi Traditional CP3 Exhaust

* When combined with an ECU reflash
** Dependent on muffler + baffle combination

Performance & Tuning

Slipstream uses a high-flow catalytic converter and removable baffle to maintain street usability while still delivering meaningful gains.

On a tuned setup, you can expect:

• Up to 10–12hp at the wheel
• Stronger torque through the low and midrange
• Smoother, more linear throttle response
• Faster engine pickup under load

For everyday riding, the system runs safely on the factory tune when used with the included standard baffle.

If you’re pairing it with intake modifications or running without the baffle for maximum flow, an ECU flash or dyno tune is strongly recommended to extract the full benefit of the system.

We’ve partnered with Kevin Hope to develop a CP3-specific tune based on extensive dyno testing and real-world data logging to suit our exhaust platforms. Contact us directly if you'd like to organise this upgrade.

The Slipstream Difference

The MT09 Slipstream isn’t just about sound; it’s about integration.

Compared to the traditional CP3 layout, Slipstream:

• Sits further under the bike for a more compact visual profile
• Eliminates the bulky factory exhaust box
• Improves ground clearance
• Reduces exposed components
• Creates a more streamlined, MotoGP/track-inspired aesthetic

The result is a lighter, cleaner silhouette that complements the MT09’s aggressive naked styling without visually overpowering it.

Flanker Muffler – MT09 Configuration

Slipstream is paired with our Flanker muffler, chosen for its compact proportions and modern finish.

• Carbon-tipped design with stainless mesh grille
• Deep burble at low RPM with a sharp, raspy note higher in the rev range
• Compact, low-profile mounting position
• Sportier than stock, yet comfortable with the included baffle
• Even quieter with optional Quietcore insert

This system delivers presence without becoming intrusive, which is ideal for a street-focused performance build.

MT09 (2024+) Specific Design

Slipstream has been engineered specifically around the updated 2024+ MT09 chassis and geometry.

• Dedicated mounting hardware for the revised frame
• Optimised pipe routing for tighter under-engine packaging
• Designed around twin O2 sensor configuration (Euro 5+)
• Improved protection in the event of a drop

Each kit includes:

Headers
Collector
Link pipe
High-flow catalytic converter
Flanker muffler
Springs and fasteners
Removable baffle insert
O2 bung + block-off hardware

Euro 5+ Compatible

Euro 5+ compliant MT09 models run twin O2 sensors. Slipstream systems are supplied ready to accommodate both sensors.

If your bike runs a single sensor (varies by market), simply use the included bung and block-off bolt.

For customers seeking a de-cat configuration (track use only), contact us directly to discuss available options.

Installation & Support

DIY installation in 1–2 hours using basic hand tools (HEX set, sockets, wrenches).

Download install instructions below.