Kawasaki ZR900 Performance model T304 Stainless De-cat exhaust pipe,NOT RS MODEL

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Looking to upgrade your Kawasaki Z900 Performance model with premium kawasaki performance superbike exhausts? This high-quality T304 stainless steel de-cat exhaust pipe from Carbon Can Co Ltd is precision-engineered to replace the restrictive factory catalytic converter box, delivering significant weight savings, improved exhaust flow, and enhanced throttle response. Designed specifically for the Kawasaki ZR900 Performance model (not compatible with the RS variant), this mandrel-bent replacement pipe offers riders a straightforward performance upgrade without the need for welding or complex modifications.

Superior Engineering in Kawasaki Performance Superbike Exhausts

Our Kawasaki Z900 Performance de-cat pipe is manufactured using premium T304 stainless steel, chosen for its exceptional resistance to corrosion, heat tolerance, and long-term durability. Unlike cheaper alternatives constructed from mild steel or inferior grades of stainless, T304 maintains its structural integrity and lustrous appearance even after thousands of miles in all weather conditions. The pipe is CNC mandrel-bent to a precise 2-inch diameter, ensuring smooth internal walls without the crimping or distortion common in crush-bent alternatives. This manufacturing precision guarantees optimal exhaust gas flow, reducing back pressure and allowing your engine to breathe more freely throughout the rev range.

The standard Kawasaki catalytic converter box is a substantial component, weighing in at a hefty 4.33 kilograms. By contrast, this aftermarket de-cat pipe weighs just 0.7 kilograms—delivering an impressive weight saving of 3.6 kilograms from your motorcycle. Removing this rotating mass from the rear of your bike improves weight distribution, enhances handling agility, and contributes to sharper acceleration. For track day enthusiasts and spirited road riders alike, every kilogram counts when it comes to optimising your machine’s dynamic performance.

What You Receive with Your Kawasaki Performance Superbike Exhausts De-Cat Pipe

This comprehensive kit includes everything required for a straightforward installation. The package contains the precision-engineered T304 stainless steel link pipe, a high-quality stainless steel clamp for secure fitment, and all necessary hardware to ensure a leak-free connection. Importantly, the design retains the factory oxygen sensor mounting point in the front downpipes, ensuring your bike’s fueling system continues to receive accurate exhaust gas temperature data. This thoughtful engineering means you can remove the restrictive catalytic converter whilst maintaining compatibility with your motorcycle’s electronic fuel injection system.

Installation is remarkably straightforward—simply remove your factory catalytic converter box by cutting it away (most owners cut just before and after the cat box), then bolt this new de-cat pipe into position using the supplied clamp. The process requires no welding, making it accessible to home mechanics with basic tools. Your existing rear silencer—whether standard or aftermarket—will connect exactly as before, with no modifications required to your existing exhaust system components.

Performance Benefits and MOT Considerations for Kawasaki Performance Superbike Exhausts

Removing the restrictive catalytic converter allows exhaust gases to exit more efficiently, reducing back pressure and freeing up horsepower across the rev range. Riders typically notice improved throttle response, slightly increased peak power, and a more purposeful exhaust note. When combined with an aftermarket air filter, the performance gains become even more noticeable, though we always recommend having your motorcycle’s fueling professionally mapped to extract maximum performance and ensure optimal air-fuel ratios.

A common question concerns MOT testing after fitting a de-cat pipe. In the UK, motorcycles are subject to noise testing during MOT inspections, not emissions testing. Provided you retain a road-legal silencer (one fitted with a removable baffle and BSAU markings), your Kawasaki Z900 Performance will remain fully MOT compliant. This makes the de-cat pipe an ideal upgrade for riders who want enhanced performance without compromising their bike’s legal road status. For detailed information about UK motorcycle emissions regulations, the official UK Government MOT inspection manual provides comprehensive guidance.

Compatibility and Related Kawasaki Performance Superbike Exhausts Products

This de-cat pipe is engineered specifically for the Kawasaki ZR900 Performance model and is not compatible with the ZR900RS variant. The RS model features different exhaust routing and mounting points, requiring a dedicated component. If you own a ZR900RS Cafe, we offer a Kawasaki ZR900RS Cafe 2022 Stainless De-cat exhaust pipe complete with clamp and shield brackets designed precisely for that model’s unique requirements.

Carbon Can Co Ltd manufactures an extensive range of performance exhaust components for Kawasaki motorcycles. Whether you’re building a track weapon or simply seeking to optimise your road bike’s performance, our catalogue includes options for numerous models. Riders of other Kawasaki performance machines might also be interested in our Kawasaki Z1000 2010-2019 single right-hand CNC stainless de-cat pipe and clamps, which offers similar weight savings and performance benefits for that popular naked sportsbike.

Installation Tips and Fueling Recommendations

Whilst our exhausts are designed to deliver improved performance without mandatory fueling changes, optimising your engine management will always yield the best results. If you’ve fitted an aftermarket air filter alongside this de-cat pipe, we strongly recommend having your Kawasaki’s fueling professionally mapped on a dynamometer. A custom fuel map ensures your engine runs at optimal air-fuel ratios throughout the throttle and rev range, maximising power delivery whilst protecting engine longevity. Many riders report noticeable improvements in smoothness, mid-range punch, and top-end power after professional mapping.

When installing your new de-cat pipe, ensure all connections are properly tightened and check for exhaust leaks after the first ride. It’s good practice to re-torque the clamp after a heat cycle, as thermal expansion and contraction can sometimes cause initial settling. Always allow adequate cooling time before working on exhaust components, as stainless steel retains heat considerably longer than you might expect.

Frequently Asked Questions About This De-Cat Pipe

Will this fit my Kawasaki Z900RS?
No, this specific de-cat pipe is designed exclusively for the Z900 Performance model. The RS variant requires a different component due to its unique exhaust configuration.

Do I need to remap my bike after fitting this de-cat?
Whilst not essential, remapping is recommended, particularly if you’ve also fitted an aftermarket air filter. Our exhausts are designed to work with standard fueling, but professional mapping unlocks additional performance.

Will my bike pass its MOT with this fitted?
Yes, provided you retain a road-legal silencer with appropriate noise levels. UK motorcycles are tested for noise, not emissions, during MOT inspections.

What tools do I need for installation?
Basic hand tools including spanners, sockets, and an angle grinder or pipe cutter to remove the original cat box. No welding equipment is required.

Is the weight saving really noticeable?
Absolutely. Removing 3.6 kilograms from the rear of your motorcycle improves weight distribution and handling characteristics, particularly during aggressive cornering and acceleration.

Upgrade your Kawasaki Z900 Performance today with this precision-engineered de-cat pipe and experience the performance potential your superbike was designed to deliver.

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