SC Project 4-2-1 Titanium Headers Compatible Range For KAWASAKI Z900 (2020 Onwards)

SC Project 4-2-1 Titanium Headers Compatible Range For KAWASAKI Z900 (2020 Onwards)

The Kawasaki Z900 is already a formidable sc-project-4-2-1…900-2020-onwards/ player in the naked sportbike segment. With its aggressive styling, sharp chassis, and potent 948cc inline-four engine, it strikes a rare balance between performance, usability, and excitement. However, like many production motorcycles, the Z900 comes from the factory with an exhaust system designed to meet emissions and noise regulations—often at the cost of performance and sound.

That’s where the SC-Project 4-2-1 Titanium Headers come in. Designed for 2020 and newer Z900 models, these premium headers are the perfect foundation for riders who want to unleash their bike’s true potential. Crafted from ultra-lightweight titanium and built with racing pedigree, this header system isn’t just a performance upgrade—it’s a statement of engineering excellence.

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Overview: Built for Power and Precision

The SC-Project 4-2-1 Titanium Headers replace the entire stock header system on the Z900, optimizing exhaust flow from the very first combustion pulse. Designed to pair seamlessly with SC-Project’s slip-on exhausts (or many aftermarket mufflers), this system is the ideal performance-focused upgrade for both street riders and track day warriors.

Unlike the stock setup, which includes a bulky and restrictive catalytic converter, the SC-Project headers provide a direct, free-flowing path for exhaust gases, reducing backpressure and allowing the engine to breathe significantly better. The 4-2-1 configuration is particularly effective at maintaining mid-range torque while also enhancing top-end horsepower—a perfect match for the Z900’s high-revving nature.

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Materials & Build Quality

SC-Project is a brand known for working with elite-level race teams in MotoGP, Moto2, and World Superbike, and their attention to detail is second to none. These headers are crafted entirely from Grade 1 Titanium, offering exceptional heat resistance, corrosion resistance, and extreme weight savings over stainless steel or stock mild steel headers.

Titanium not only resists thermal fatigue better than steel, but it also dramatically reduces the weight of the exhaust system. Dropping that weight from the front end of the bike improves both handling and responsiveness, especially in corners and rapid transitions. You’ll feel the difference, even at lower speeds.

The TIG welds are flawless, and the bends are formed using mandrel technology, ensuring consistent internal diameters and smooth flow. SC-Project also laser-etches their logo on the primary pipes, subtly marking the headers with a badge of racing heritage.

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Performance Gains You Can Feel

Swapping to a full titanium header system transforms how the Z900 performs. Most noticeable is the improved throttle response and mid-range torque. The 4-2-1 configuration excels in these areas, giving you stronger pull in real-world RPMs where street riders spend most of their time.

At the top end, horsepower increases as the engine can now expel gases more freely, allowing for more efficient combustion. These gains are further amplified when paired with a high-flow slip-on exhaust and proper fuel tuning (either via ECU flash or a piggyback tuner like a Power Commander).

Additionally, removing the catalytic converter significantly drops exhaust temperatures and reduces engine stress during hard riding. This contributes to better thermal management, especially in stop-and-go traffic or during track use.

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Sound Enhancement: A Sonic Upgrade

While the headers alone won’t produce a finished exhaust tone, they dramatically enhance the character and quality of the sound when paired with a compatible muffler. The titanium construction adds a sharper, raspier edge to the Z900’s inline-four engine, producing a more raw and exhilarating exhaust note.

The combination of a free-flowing 4-2-1 design and titanium materials results in crisp throttle blips, a deep growl at idle, and an intoxicating scream at higher RPMs. For riders chasing not just speed but sound, this header upgrade sets the stage for a truly visceral experience.

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Installation & Fitment

The SC-Project 4-2-1 Headers are engineered specifically for the 2020+ Kawasaki Z900, ensuring precise fitment with factory mounting points. Installation does require removal of the stock exhaust system and may take a few hours, depending on experience.

For optimal performance, it’s highly recommended to combine the header system with a fuel tuner or ECU remap. This ensures proper air-fuel ratios and avoids potential issues related to the lean running conditions that can occur when factory restrictions are removed.

All necessary mounting hardware is included, and the headers are designed to integrate cleanly with SC-Project slip-ons and many other aftermarket cans.

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Street Legality & Compliance

It’s important to note that this header system does not include a catalytic converter and is intended for racing or off-road use only. Depending on your local laws, installing these headers may make the motorcycle non-compliant for street use, especially in regions with strict emissions standards.

For riders seeking maximum performance and are using their bike for track days, performance builds, or closed-course events, these headers are an ideal solution. Riders should always verify local regulations before modifying emissions-critical components.

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Why Choose SC-Project Titanium Headers for Your Z900?

The SC-Project 4-2-1 Titanium Headers bring factory-level engineering, MotoGP-level performance, and race-proven durability to your Kawasaki Z900. Whether you’re building a streetfighter, prepping for the track, or simply want more from your machine, these headers deliver in every way.

Key Advantages:

• Ultra-lightweight titanium construction for unmatched weight savings

• 4-2-1 race-inspired design for optimal torque and high-end horsepower

• Mandrel-bent piping and TIG welds for smooth flow and durability

• Enhanced throttle response and faster revs

• Aggressive, race-bred sound when paired with aftermarket slip-ons

• Precision fitment for Kawasaki Z900 (2020 onwards)

• Proven performance gains, especially when tuned

From street domination to circuit performance, the SC-Project 4-2-1 Titanium Headers are the performance foundation your Z900 deserves. Lightweight, aggressive, and purpose-built—this is the upgrade that sets your ride apart.

 

Weight	9 kg
Dimensions	55 × 33 × 25 cm