Italian exhaust maker SC-Project has just released a fresh lineup of systems tailored for the Kawasaki Z900 motorcycle. This update, announced on August 14, 2025, offers riders options from race style designs to sleek everyday upgrades, boosting power and cutting weight for better performance on streets or tracks.
What Riders Get from These New Exhausts
SC-Project designed these exhausts to meet different rider needs, whether for daily commutes or high speed runs. The company drew from its racing background in MotoGP and Superbike events to create products that enhance the Z900’s inline four engine.
Each system promises more horsepower, less weight, and a bolder sound. For example, the full 4-2-1 system stands out by removing the catalytic converter for maximum flow, though riders must check local rules first.
These releases tie into the growing trend of aftermarket parts for naked bikes like the Z900, which sold over 50,000 units worldwide last year. Riders often start with exhaust upgrades to personalize their machines and improve throttle response.
Spotlight on Top Models in the Lineup
The CR-T model draws direct inspiration from MotoGP winners, featuring a compact titanium or carbon body. It adds 3.9 horsepower and sheds 7.28 pounds compared to stock, making it ideal for track enthusiasts who want a loud, aggressive roar.
Next up is the SC1-R, which blends style and subtlety with hydroformed titanium and carbon accents. This one boosts output by 5.2 horsepower while keeping noise levels reasonable, perfect for urban riders seeking class without excess volume.
The S1 offers a tapered titanium design with a matte carbon end cap, delivering 3.5 horsepower gains and 6.28 pounds of weight savings. Its natural or black finish options appeal to those wanting a clean, performance focused look.
For racing heritage, the GP-M2 brings Moto2 tech with a carbon body and stainless cap, cutting weight to 3.53 pounds and adding 3.8 horsepower. It stays compliant with Euro 5 standards, balancing power with everyday usability.
Performance Gains and Real World Benefits
Upgrading to these exhausts can transform the Z900’s ride. Tests show consistent power increases across models, with torque improvements that make acceleration smoother and more responsive in mid range revs.
Weight reduction plays a big role too, as lighter systems improve handling and fuel efficiency. Riders report better cornering and quicker stops, especially on twisty roads.
Here is a quick comparison of key specs for the main models:
| Model | Horsepower Gain | Weight Savings (lbs) | Material Highlights |
|---|---|---|---|
| CR-T | 3.9 | 7.28 | Titanium or Carbon Body |
| SC1-R | 5.2 | (System at 4.19 lbs) | Hydroformed Titanium |
| S1 | 3.5 | 6.28 | Tapered Titanium |
| GP-M2 | 3.8 | (System at 3.53 lbs) | Carbon Body |
| 4-2-1 | 8.8 | 9.48 | Titanium or Stainless |
These figures come from manufacturer tests under controlled conditions, but real world results may vary based on bike setup and riding style.
Beyond numbers, the sound upgrade excites many owners. The deeper exhaust note turns heads and adds thrill to every ride, without needing major engine mods.
Installation Tips and Legal Considerations
Putting in these exhausts is straightforward for most mechanics, often taking under two hours with basic tools. SC-Project includes bike specific hardware, so no custom work is needed.
However, full systems like the 4-2-1 remove emissions parts, which could violate laws in areas with strict pollution rules. In the US, for instance, EPA guidelines require catalytic converters on road bikes, so track use might be the safer bet.
Riders should consult local shops for tuning after installation to optimize fuel maps and avoid engine issues. Proper setup ensures longevity and peak performance.
What Owners and Experts Are Saying
Early feedback from riders praises the build quality and easy fit. One owner noted the CR-T’s roar made their Z900 feel like a race bike, while another appreciated the SC1-R’s subtle elegance on city streets.
Experts highlight SC-Project’s track record, with wins in major races backing the tech. Reviews from motorcycle forums and sites like Cycle World echo that these systems deliver reliable gains without compromising ride comfort.
Common praises include:
- Enhanced throttle response for quicker overtakes.
- Durable materials that resist heat and corrosion.
- Value for money compared to other brands.
Some note the higher price point, but most agree the performance justifies it for serious enthusiasts.
Why This Matters for Motorcycle Fans
This launch reflects broader trends in the bike world, where customization drives sales amid rising interest in performance parts. With global motorcycle markets growing by 5 percent in 2025, upgrades like these keep riders engaged.
For Z900 owners, these exhausts solve common gripes like stock weight and muted sound, offering practical ways to elevate their experience.
Share your thoughts on these new SC-Project exhausts in the comments below, and if you have tried one, tell us how it changed your ride. Pass this article along to fellow riders who might want an upgrade.