Akrapovic Evolution Line Titanium Exhaust for Yamaha YZ 250 F (2009)
The Akrapovic Racing and Evolution Exhaust Systems with their hexagonal mufflers are top of the line products for this motorcycle. The increases in power and torque can be clearly seen from dyno measurements and felt on the motocross track. The muffler includes a noise damper for the European market, and an approved spark arrester for the US market. Noise emissions of 94 db are within the new strict regulations. The header pipe features an additional chamber for a better response at lower rpm and for more top end power. You will also save on weight, when compared to stock exhaust systems. We use our exclusive titanium in the production of the Evolution line and a combination of stainless steel and titanium for the Racing line.
- Power
- +1.3KWat 12000 rpm
- Weight
- - 1.0kg
- Torque
- +1.2Nmat 1200 rpm
PERFORMANCE
Measurements of the Akrapovic EVOLUTION system on the YAMAHA YZ 250F (with muffler insert):
Power & Torque: the Akrapovic Racing and Evolution systems provide the increased performance that top riders are looking for. Engine performance is increased throughout the entire rpm range. The power curve is steeper and smoother, and the increases are highest in the low end and top of rpm range. We measured max power output of 35.7 HP at 12.000 rpm and max. power increase of 1.8 HP at 12000 rpm. The torque also gets a major boost, which will make riding smother and lower your times on the track.
It’s not just about peak power-Akrapovič exhaust systems deliver increased performance throughout the entire rpm range. Increased power and torque result in a much smoother ride. All Akrapovič exhaust system measurements are made on our computer-controlled flowbenches.
Technical Data | ||||
|---|---|---|---|---|
UNIT |
STOCK |
AKRAPOVIC |
MAX GAIN | |
| maximum power | kW | 25.1 / 12500 rpm | 26.3 / 12000 rpm | + 1.3 / 12000 rpm |
| HP (m) | 34.1 / 12500 rpm | 35.7 / 12000 rpm | + 1.8 / 12000 rpm | |
| HP (i) | 33.6 / 12500 rpm | 35.2 / 12000 rpm | + 1.8 / 12000 rpm | |
| maximum torque | Nm | 24.8 / 8400 rpm | 25.0 / 8500 rpm | + 1.2 / 1200 rpm |
| lb-ft | 18.3 / 8400 rpm | 18.4 / 8500 rpm | + 0.9 / 1200 rpm | |
| weight | kg | 3.3 | 2.3 | - 1.0 |
| lb | 7.3 | 5.1 | - 2.2 | |
| % | - 30.3 | |||
| static noise level | dB | 94 / 5000 rpm | 94 / 5000 rpm | 0 |
| measured with: Yamaha YZ 250 F 2008 | ||||
ADDITIONAL DATA | |||
|---|---|---|---|
possibility of periodic service without removing A.E.S. |
oil |
oil filter |
|
| YES | YES | ||
legal for street use |
NO | ||
** Technical specifications of Akrapovic exhaust systems and related products subject to change without notice
Below you may see the diagram data dislaying the difference in Engine Torque and WH Power between stock and Evolution Line Titanium Exhaust for Yamaha YZ 250 F (2009)
