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Roadsitalia Exhaust
The Kawasaki Ninja 650 from 2023 onwards is a motorcycle that knows exactly what it wants to be. The 649cc parallel-twin engine homologated to Euro 5 is the same as the previous generation, refined but not altered, with a complete electronic package including two-level traction control, slipper clutch and a 4.3" TFT display. The sporting fairing, LED headlights and committed riding position confirm the character of the bike: an accessible sport-tourer that does not compromise on looks or riding pleasure. For those looking for an exhaust for this generation, find the full range of exhausts for Kawasaki Ninja 650, divided by model year.
The systems in this category are full exhaust systems for the Kawasaki Ninja 650 from 2023 onwards: they replace the entire gas path from the engine outlet to the final muffler, headers included. The fitting kit is included and the mounting points are compatible with the original geometry. The under-engine position with lateral outlet requires care during installation: we recommend entrusting the work to a qualified mechanic for a precise and lasting result.
Compatibility note: these systems are compatible exclusively with the version equipped with two lambda sensors. Those who purchased a Ninja 650 registered in 2023 are advised to verify their model's configuration before ordering, as during that transition year some units may carry the previous generation setup, with a single lambda sensor, and may not be compatible with these systems.
On a motorcycle with an already defined and sporting character, a full exhaust system does not change the identity — it takes it to a higher level. The weight reduction is real and on a Ninja, where lightness is an integral part of the riding pleasure, reducing mass in the under-engine area is felt both in the saddle and during manoeuvres. Power delivery can become more direct and fluid, with a more responsive throttle that better accompanies the riding pace. In some conditions the reduction in back pressure can contribute to freer engine breathing, with positive effects on delivery fluidity in the everyday riding range. The sonic character transforms in the most coherent way possible for a sporting parallel-twin: fuller, more present, without artifice.
Every system we produce is born from handcrafted manufacturing in Lombardy, in the province of Bergamo. To order, piece by piece, with internal quality control at every step. No distributors, no intermediaries: direct from the manufacturer guarantees a direct and transparent relationship between those who build and those who receive, with all the advantages that brings in terms of support and product traceability.
As this is a full exhaust system on a Euro 5 motorcycle with a second lambda sensor, the original catalysed section is entirely replaced. The catalytic converter is available as an option from the drop-down menu on the product page. Choosing the catalysed version results in no delivery issues or warning lights, though a short ECU adaptation period to the new exhaust is normal: in the first rides small variations in power delivery may appear, which will resolve on their own. Those who choose the non-catalysed version should be aware that power delivery may not be optimal and that an ECU remap will likely be necessary to get the best out of the system. The non-catalysed version is reserved for track use or contexts where road compliance is not required, within the limits permitted by local regulations.
Those who opt for the non-catalysed version should also be aware that the MIL warning light will certainly illuminate: without the catalytic converter the second lambda sensor does not receive the parameters expected by the ECU and generates error code P0420. To manage this situation, the AMC Automatic MIL Clear is available, which connects to the OBD diagnostic port and manages the MIL warning light automatically without intervening on engine parameters or power delivery. It is worth knowing that thorough testing on these models has shown that the second lambda sensor is particularly sensitive and sometimes unpredictable: sporadically, we have recorded MIL warning light activations even with homologated and catalysed exhausts, and even on completely stock motorcycles after a simple wash. Anyone who wants peace of mind in every situation can therefore consider the AMC Automatic MIL Clear regardless of their choice of catalytic converter. The OBD2 Diagnostic Kit further allows fault codes to be read and cleared in real time, and ECU parameters to be monitored via smartphone. All solutions are available in the ECUs, OBD II diagnostics and lambda kits section.
The dB killer is included as standard on all systems to ensure acoustic compliance. It cannot officially be removed without invalidating the homologation. For those who want to lower the sound level further, the No-Noise version features an internally welded filter that reduces decibels more decisively without significantly affecting the overall performance of the system. Where available, it is selectable from the drop-down menu on the product page.
Each system goes into production when the order is placed. Updated production times are always visible at checkout before confirming the purchase. The tracking code is sent automatically once the shipment leaves.
For questions about compatibility, differences between variants or technical fitting details, consult the FAQ section or contact us via the Contact page or chat. We respond directly and without runaround.
In the product list below you will find the full range available for the Kawasaki Ninja 650 2023-. The variants differ mainly in the shape, material and finish of the muffler. The catalytic converter and dB killer No-Noise, where available, are configured from the drop-down menu on the product page. Go to the page of the model you are interested in to see the photos, read the technical specifications and set up your exhaust system.
