Description
Aprilia RSV4 / Tuono V4 2017–2025 Hi Mount Slip On
Upgrade the sound, performance and look of your Aprilia RSV4 or Tuono V4 with Austin Racing’s premium De-Cat Exhaust System. Designed for riders chasing a sharper race-inspired setup, this system replaces the OEM mid-section while retaining the original headers, delivering a noticeable weight reduction and performance improvement.
Available muffler options include:
GP1R: 60 mm bore angular tip, available in Black or Pure Titanium
GP2: 200 mm carbon sleeve can
GP2R: Compact 110 mm carbon sleeve can
V3: 250 mm black ceramic can, suited to EU track use
Key Features
Full titanium construction for a lightweight, durable finish
Improved exhaust flow for stronger performance and throttle response
Bolt-on installation with no remap required, although tuning is recommended for best results
Estimated performance gain of 3–5 bhp
Adjustable noise levels on GP1/GP2 options via internal baffling
Race-ready design with repacking or insert removal recommended for dedicated track use
Specifications
System Weight: Approx. 1.4 kg
GP1R Noise Level: Approx. 110 dB without dB killer
V3 Noise Level: Approx. 102–103 dB at 5500 rpm, suitable for many EU track limits
Additional Information
A servo eliminator is required for correct installation and can be ordered separately.
For best results, pairing this system with the UPMAP APRILIA T800+ is recommended. This gives access to a wide range of dyno-tested Gabro maps for both street and track setups.
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:
- 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.
- 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.
- 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.


























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