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Akrapovic's S-Y9R21-EET Racing Line Exhaust System, Titanium is made specifically for Yamaha YZF-R9 (2025-current).
Features:
- High-grade titanium muffler sleeve and end cap
- Stainless steel link pipe and headers
- Complete system with right-side muffler exit for racing look
- Includes aluminum muffler bracket
- Design inspired by Akrapovic systems for R6, R7, and R1
- No catalytic converter or pre-muffler
- Developed for closed-course competition use only
- ECU remapping required
- Supplied with two different noise inserts
Technical Data
| Variables | Unit | Stock | Akrapovic | Max Gain |
|---|---|---|---|---|
| Max. power | kW | 82.2 / 10000 rpm | 85.4 / 10000 rpm | + 3.4 / 9500 rpm |
| HP (m) | 111.8 / 10000 rpm | 116.2 / 10000 rpm | + 4.6 / 9500 rpm | |
| HP (i) | 110.2 / 10000 rpm | 114.6 / 10000 rpm | + 4.5 / 9500 rpm | |
| Max. torque | Nm | 88 / 8500 rpm | 90.2 / 8000 rpm | + 3.2 / 5000 rpm |
| lb-ft | 64.9 / 8500 rpm | 66.5 / 8000 rpm | + 2.4 / 5000 rpm | |
| Weight | kg | 7 | 5.16 | - 1.8 |
| lb | 15.4 | 11.4 | - 4 | |
| % | - 26.3 | |||
| Volume | dB | 95.5 / 5000 rpm | 103.2 / 6500 rpm | 7.7 |
| Volume without noise insert | dB | 95.5 / 5000 rpm | 105.1 / 6500 rpm | 9.6 |
| Inst. time | min | 60 |
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