⟲ 360° — drag meThe facts.
| Part Number | S-Y6E9-APT |
|---|---|
| System Type | Full exhaust system (4-2-1) |
| Header Material | Stainless steel V4A with lambda connection |
| Silencer Material | Titanium shell, end cap, and internals |
| System Weight | 4.2 kg |
| Weight Saving vs. Stock | 6.1 kg (stock: 10.3 kg) |
| Peak Power Gain | +10.6 PS at 13,150 RPM (stock: 110.5 PS → 121.1 PS) |
| Torque Gain | +6.9 Nm at 11,500 RPM |
| Sound Level | 107.8 dB (+13.6 dB vs. stock 94.2 dB) |
| Road Homologation | None — track/race use only |
DescriptionThe whole story▼
The Akrapovic Evolution Line in titanium is the definitive full exhaust system for the Yamaha YZF-R6, developed in direct collaboration with factory race teams and engineered to deliver a genuine step-change in performance. Shedding 6.1 kg over the standard system and unlocking an additional 10.6 PS, this is not a cosmetic upgrade — it is a complete transformation of what the R6 is capable of.
Key Features
- Massive 6.1 kg weight reduction: from the stock 10.3 kg down to just 4.2 kg, dramatically improving handling and mass centralisation
- 10.6 PS power gain, raising peak output from 110.5 PS to 121.1 PS at 13,150 RPM
- 6.9 Nm additional torque at 11,500 RPM for stronger mid-range drive onto straights
- 4-2-1 stainless steel V4A header configuration with lambda connection
- Hexagonal silencer with full titanium shell, titanium end cap, and titanium internals throughout
- dB-Eater (V-TUV227-1) included to manage sound levels in controlled environments
Construction and Materials
Every metallic component of the silencer — shell, end cap, and internal structure — is machined or formed in titanium, ensuring the lowest possible weight without sacrificing durability under sustained racing conditions. The 4-2-1 header is manufactured in stainless steel V4A, providing thermal resilience and a precise fit to the R6 engine architecture. The hexagonal silencer profile is an Akrapovic signature, offering a distinctive Grand Prix aesthetic that is immediately recognisable on circuit.
Performance and Sound
The Evolution Line raises the acoustic character of the YZF-R6 by 13.6 dB over the stock system, moving from 94.2 dB to 107.8 dB — a sound that reflects the system's race-only intent without compromise. This is not a road-registered exhaust: it is engineered exclusively for closed-circuit and track-day use, where regulations permit the full output of the system. The included dB-Eater (V-TUV227-1) provides a degree of sound management for circuits with noise limits.
Fitment and Compatibility
The Akrapovic S-Y6E9-APT Evolution Line Titanium is designed specifically for the Yamaha YZF-R6 across all model years from 2008 to 2026, covering the full production run of the current and preceding generation.
- Yamaha YZF-R6 (2008–2026)
Specifications
| Attribute | Detail |
|---|---|
| Part Number | S-Y6E9-APT |
| System Type | Full exhaust system (4-2-1) |
| Header Material | Stainless steel V4A with lambda connection |
| Silencer Material | Titanium shell, end cap, and internals |
| System Weight | 4.2 kg |
| Weight Saving vs. Stock | 6.1 kg (stock: 10.3 kg) |
| Peak Power Gain | +10.6 PS at 13,150 RPM (stock: 110.5 PS → 121.1 PS) |
| Torque Gain | +6.9 Nm at 11,500 RPM |
| Sound Level | 107.8 dB (+13.6 dB vs. stock 94.2 dB) |
| Road Homologation | None — track/race use only |
| Included | dB-Eater V-TUV227-1 |
| Fitment | Yamaha YZF-R6 (2008–2026) |
FitmentWhich bikes this fits▼
- Yamaha YZF-R6 (2008–2026)
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Measure your head circumference about one centimetre above your eyebrows and compare it with the size chart on this page. Between sizes? Choose the smaller one — the padding beds in with use.
Yes — it’s tested and approved to the current ECE 22.06 standard and road-legal across the EU.
Most of our touring and sport helmets are Pinlock-ready and many include the insert. Check the ‘What’s in the box’ section on this page for this model.
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Take out the washable lining and hand-wash it in lukewarm water. Clean the shell and visor with a soft cloth and water only — never solvents.
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