Akrapovic Evolution Line Titanium Exhaust for Yamaha YZ/WR 250 F (2006)
This system is designed for riders who are looking for a top quality component, in terms of both production quality and performance, and of course know how to take every advantage of it out on the course. We should mention the HEXAGONAL muffler design, which goes extremely well with the lines of the Yamaha. The Akrapovic EVOLUTION system is designed for two markets. For the European and other markets it comes with a built-in noise damper, and for the American market it comes with an approved spark arrester.
- Power
- +1.5KWat 11670 rpm
- Weight
- - 1.1kg
PERFORMANCE
Measurements of the Akrapovic EVOLUTION system on the YAMAHA YZ 250F (with noise damper):
Power & Torque: the Akrapovic Evolution delivers increased power and torque throughout nearly the entire rpm range of the Yamaha. The engine will be more responsive at every point in the range, and the system delivers a lot more power at the top end. At 11670 rpm we measured 36.5 HP.
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 | 25.7 / 10750 rpm | 26.8 / 11670 rpm | + 1.5 / 11670 rpm |
| HP (m) | 35.0 / 10750 rpm | 36.5 / 11670 rpm | + 2.1 / 11670 rpm | |
| HP (i) | 34.5 / 10750 rpm | 36.0 / 11670 rpm | + 2.1 / 11670 rpm | |
| weight | kg | 3.2 | 2.1 | - 1.1 |
| lb | 7.1 | 4.6 | - 2.5 | |
| % | - 34.4 | |||
| static noise level | dB | 96 / 5000 rpm | 96 / 5000 rpm | 0 |
| measured with: Yamaha YZ 250 F 2006 | ||||
CONFIGURATION
The Akrapovic Evolution system is composed of a conical titanium header tube and link pipe. The header tube and link pipe are joined with a sleeve joint secured with a silicon-shielded spring. The link pipe is welded to the muffler. The material for the inlet cap and perforated inner sleeve are dependent on the material used for the link pipe (Evolution: titanium link pipe – titanium inlet cap and perforated inner sleeve). The outlet cap is made of carbon-fiber. The HEXAGONAL muffler is attached to the bike with an Akrapovic offroad carbon-fiber clamp. The system is also available with an optional Akrapovic carbon-fiber heat shield. For the European and other markets it comes with a built-in noise damper, and for the American market it comes with an approved spark arrester, which is marked with a laser engraving on the muffler.
heat shield
CONFIGURATION | |||
|---|---|---|---|
header tubes |
collector |
link pipe | |
material |
TITANIUM | - | TITANIUM |
tube shape |
CONICAL | - | CONICAL |
interference crossover tubes |
- |
lambda sensor |
- |
header tube inner sleeves |
S.S. CNC MACHINED |
header tube flanges |
ALU CNC MACHINED |
header tube - collector connection |
- |
collector / header tube - link pipe connection |
SLEEVE JOINT + SILICON SHILDED SPRING |
link pipe - muffler connection |
WELDED |
muffler
|
TITANIUM / CARBON-FIBER |
muffler metal interior |
TITANIUM |
muffler outer sleeve |
TITANIUM |
muffler clamp |
CARBON-FIBER OFFROAD |
muffler bracket |
- |
muffler insert |
SPARK ARRESTER |
catalytic converter |
- |
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/WR 250 F (2006)
