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Evolution Line Titanium Exhaust for Yamaha YZ 250 F (2009)

Full Evolution system 1x1 with titanium muffler Hexagonal with spark arrester

Hersteller : Akrapovic
Artikel Nr. : S-Y2MET9-QTA
Barcode : 5210119002689
Verfügbarkeit : Auf Lager

Akrapovič Evolution exhaust systems are designed for riders who demand maximum performance from their motorcycle. Systems are significantly lighter if compared to stock exhaust system and feature exceptional production quality, hi-tech materials and increased engine performance combined with pure racing sound output. Titanium Evolution systems feauture carbon fibre end cap. Our patented chamber helps to reduce noise emissions and provides better power and torque delivery. FOR CLOSED COURSE COMPETITION USE ONLY. NOT INTENDED FOR STREET USE. Product meets the USAD Forest service Standard for spark arresters FS5100-1.


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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


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






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


possibility of periodic service without removing A.E.S.


oil filter


legal for street use


** 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)

S-Y2MET9-QTA_graph Diagram

Emission Notice


Because of the world-wide distribution of Akrapovič d.d. products, neither Akrapovič d.d. nor any of its subsidiaries make any representation that the products comply with the air and/or noise emissions laws, or labeling laws, of any jurisdiction. The purchasers are entirely responsible for informing themselves of the applicable laws where the products are to be used and to comply with those law.



Various U.S. states and the U.S. federal government have individual laws regulating the use of aftermarket exhaust parts and systems, especially as those parts and systems modify, remove, or replace original equipment catalysts. Please consult the appropriate laws in your area before installing any aftermarket part or system on your vehicle to ensure compliance with all applicable laws. Neither Akrapovič d.d., Akrapovič America LLC nor any of their subsidiaries or the sellers of the parts or systems make any representation that any of their parts or systems comply with any such laws.

WARNING / California:

California laws prohibit the use of any aftermarket exhaust part or system that modifies, removes or replaces original equipment catalysts unless the California Air Resources Board has issued an Executive Order regarding such part or system or unless the part or system is exempted by being used only on racing vehicles on closed courses. Neither Akrapovič d.d., Akrapovič America LLC nor any of their subsidiaries make any representation that any of their parts or systems has received such an Executive Order or that any of their parts or systems conform with the racing vehicles exemption. The purchasers are entirely responsible for informing themselves of applicable California laws and to comply with those laws.

Original Akrapovic

Genuine Akrapovic Exhausts


The exhausts presented and sold through our sales channels are genuine Akrapovic exhaust systems.

They are not copies but authentic Akrapovic exhaust systems protected with two year warranty

Enjoy the thrilling sound of your exhaust system and be sure that the part you have is of the highest level manufacturing quality provided by Akrapovic.

How to Spot the Real Thing

Power from your engine will increase.

Manufacturing quality is like none other. There sould be no flaws in the body of the exhaust.

That is why the price is at those levels.

If it is too cheap to believe , then it should not be a genuine Akrapovic.

Do not compromise with cheaper and lower quality copies.

No Imitations

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