Description
Ducati Streetfighter V4 2020–2024 GP3 De-Cat Exhaust System
Compliant & Race Exhaust System Options
Built for the Ducati Streetfighter V4, this GP3 De-Cat Exhaust System delivers a serious upgrade in sound, weight reduction, throttle response and overall performance.
Constructed entirely from titanium and handmade in the UK, this system has been extensively tested and developed with Open Flash Tune to maximise performance from the Streetfighter V4 platform. With the correct tune installed, riders can expect sharper throttle response, smoother fuelling and a significant increase in rear-wheel power over the standard setup.
Please note: It is essential to remap your bike when fitting this system. For optimum results, we recommend pairing it with an Open Flash Tune. Order from Open Flash Performance here.
This system has been tested and mapped with OFT to deliver class-leading performance. Depending on the silencer option selected, you can choose between a more compliant dB setup or a louder race-focused configuration.
The 250mm silencer option is the quietest available option and is listed as compliant in the supplied dB test data. Shorter can options deliver a more aggressive sound and are better suited to race or track use.
Key Features
- Class-leading exhaust system for the Ducati Streetfighter V4
- Handmade bespoke system, manufactured in the UK
- Full titanium construction
- Aggressive Austin Racing design
- Unrivalled V4 sound
- Developed and tested with Open Flash Tune
- Up to 20 bhp rear-wheel power increase over stock when paired with the correct tune
- 7–8 bhp increase over stock by simply fitting the system
- Improved throttle response and rideability
- F1-inspired performance technology
- Fits with standard bodywork
- Multiple silencer lengths and dB options available
Specs
| Component | Weight |
|---|---|
| AR GP3 System | 2.05 kg |
| Stock System | 7.7 kg |
| Total Weight Saving | 5.65 kg |
The AR GP3 De-Cat System offers a substantial 5.65 kg weight saving over the stock exhaust, helping reduce overall bike weight while improving sound, performance and aesthetics.
Silencer Options
The V3 Mini silencer is available in the following lengths:
- 140mm
- 200mm
- 250mm
Available finishes:
- Black ceramic
- Titanium
Tip colour options:
- Black
- Champagne
- Titanium
Please note: Shorter length cans refer to the left silencer.
dB Levels
Tested against the stock specification plate quoted on the 2023 Ducati Streetfighter V4 chassis.
Tested at 5,000 rpm
| System | dB Level |
|---|---|
| Stock | 99.2 dB |
| V3 Mini 200mm / 140mm — Track Clearance Option | 106 dB |
| V3 Mini 200mm / 200mm — Standard dB Option | 103 dB |
| V3 Mini 200mm / 200mm — Loud dB Option | 107 dB |
| V3 Mini 250mm — Compliant Option | 101.4 dB |
Tested at 6,500 rpm
| System | dB Level |
|---|---|
| Stock | 102.6 dB |
| V3 Mini 200mm / 140mm — Track Clearance Option | 109 dB |
| V3 Mini 200mm — Standard dB Option | 107 dB |
| V3 Mini 200mm — Loud dB Option | 110 dB |
| V3 Mini 250mm — Compliant Option | 106 dB |
Important Notes:
Road Use: Non-homologated exhaust systems may not comply with local road regulations and are intended for race use only. Noise levels can vary significantly, from standard to extremely loud. Please review the specifications carefully before ordering. If you have any questions or need assistance, feel free to contact us.
Build Times: Our exhausts are built to order, with delivery times ranging from 6 to 10 weeks for standard systems and 10 to 15 weeks for more complex full systems. For the latest estimated delivery times, please visit Current Build Times. These timeframes reflect the handcrafted nature of our exhausts, which are produced by a small team in the UK, as well as the high demand for these limited products.
Exhaust Types: We offer three types of exhaust systems:
1. Slip-On Exhausts: These replace the bike’s original muffler, leaving the mid-section, catalytic converter and headers untouched. Slip-ons are a straightforward option to enhance sound and aesthetics.
2. De-cat Systems: A decat system replaces both the muffler and the mid-section, catalytic converter, while keeping the original OEM headers in place. This offers improved performance and a noticeable weight reduction.
3. Full Systems: A full system replaces all three components: the muffler, mid-section, catalytic converter and headers. This provides a complete overhaul for maximum performance and weight savings.
Each system is designed to cater to different performance, sound and aesthetic goals. If you’re unsure which option suits your needs, feel free to reach out—we’re here to help!
Design Updates: As each exhaust is handmade to order, our designs are constantly evolving to incorporate improvements. As a result, the final product may vary slightly from the pictures shown. These differences are typically very minor and represent the ongoing enhancements we make to ensure the highest quality. This adaptability is one of the unique benefits of owning a handcrafted exhaust.
This system has been tested against the stock specification plate as quoted on the 2023 Streetfighter V4 chassis.















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