honda crf 250r (2004, 2005) evolution exhaust system · 2017. 7. 4. · crf 250 r: power: the power...

Honda CRF 250R (2004, 2005)

Evolution Exhaust System

www.akrapovic-exhaust.com2Product code: 102536 (S-H2MET1-MTT)

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Akrapovic Evolution Exhaust Systemfor the Honda CRF 250R (2004, 2005)

Description

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The Akrapovic EVOLUTION system for the Honda CRF 250R will satisfy the needs of all professional MX riders. It is designed to increase performance at the adrenaline-pumping top of the rpm range. The system also conforms to FIM regulations on exhaust system noise levels for MX competition. And of course it also conforms beautifully to the lines of the Honda. For 2005, the Honda deliv-ers even more power than the 2004 model.

PERFORMANCE

Measurements of the Akrapovic EVOLUTION exhaust system on the HONDA CRF 250 R:

Power: the power curve shows the character of the Akrapovic EVOLUTION system, with the greatest power increase coming in the range from 8000 rpm on, and extend-ing into the overrev range, which will be very useful for experienced riders. Max. power of 33.6 HP is delivered way up at 11000 rpm. A power increase is also visible between 5400 and 7000 rpm, and from there to 8000 rpm the stock and Akrapovic curves more or less overlap.Torque: the torque curve is similar to the power curve, with the biggest increase com-ing at the top of the rpm range, and extending into the falling area of the curve. The range from 5400 and 7000 rpm is also better filled by the Akrapovic exhaust system than the torque delivered by the stock exhaust.

CONFIGURATION

Akrapovic EVOLUTION components (header tube, link pipe) are made of titanium elements. The header tube is conical, while the link pipe is flared. The components are attached with a free-floating joint secured with silicon-shielded tensioning springs. The muffler-link pipe joint is welded. The muffler is made entirely of titanium, and is attached to the frame using an Akrapovic Offroad carbon-fiber clamp. The Akrapovic EVOLUTION system also comes with a carbon-fiber heat shield.

Technical specifications of Akrapovic exhaust systems and related products subject to change without notice.

PERFORMANCE

stock AKRAPOVIC max. increased power

max. rear wheel power HP / rpm

(measured on SuperFlow Cyle Dyn) 32.4 / 10400 33.6 / 11000 1.2 / 11000

CONFIGURATION CONFIGURATIONheader tubes collector link pipe

material TITANIUM - TITANIUM

tube shape CONICAL - FLARED

interference crossover tubes

- lambda sensor -

header tube inner sleeves STAINLESS STEEL header tube flanges LASER CUT S.S.

header tubes - collector connection

-collector / header tube -

link pipe connectionFREE FLOATING + SILICON

SHILDED SPRING

link pipe - muffler connection

WELDEDmuffler

inlet cap /outlet capTITANIUM / TITANIUM

muffler metal interior TITANIUM muffler outer sleeve TITANIUM

muffler clamp1x CARBON-FIBER

OFF ROADmuffler bracket -

noise damper - heat shield CARBON-FIBER

OPTIONSlink pipe noise damper muffler bracket heat shield

- - - -

ADDITIONAL DATA

weight comparison (kg)

stockAKRAPOVIC difference

2.86RACING EVOLUTION stock - RACING

stock - EVOLUTION

- 2.11 - 0.75

noisemeasurements

(dB / rpm)

stock AKRAPOVIC

98 / 5500 98 / 5500

possibility of periodicservice without removing

A.E.S.

oil oil filter

YES YES

legal for street use NO

http://www.akrapovic-exhaust.com



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Exhaust Photo

CARBON-FIBER MUFFLER CLAMP

ANTI-SEIZING GREASE




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Bike Photo




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Schematic

101960 (P-ST1AM) STICKER

102534 (M-TTH2M1) FULL TITANIUM MUFFLER

101650 (P-MCTM3) CARBON-FIBER CLAMP

101748 (P-HF2) CARBON-FIBER CLAMP FITTING PARTS

101976 (P-KP1) ANTISEIZING GREASE

102122 (P-HF55) CAGE NUT

102234 (P-S2) SPRING

102436 (P-43) INNER SLEEVE

102528 (P-F19) FLANGE

102535 (H-H2MET1) HEADER TUBE

102541 (P-HSH2M1/A1) CARBON-FIBER HEAT SHIELD




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Diagram / Chart

12,5

15,0

17,5

20,0

22,5

25,0

27,5

30,0

32,5

17

18

19

20

21

22

23

24

25

5000 6000 7000 8000 9000 10000 11000 12000 13000

rw

PlhW

qrTg

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EngSpd RPM (Sorted)

STOCK EXHAUST AKRAPOVIC EVOLUTION EXHAUST



honda crf 250r (2004, 2005) evolution exhaust system · 2017. 7. 4. · crf 250 r: power: the power...

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