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Akrapovič d.d. 2007 all rights
HONDA CRF 450 F (2008) RACING & EVOLUTION EXHAUST SYSTEM
Product code: S-H4MR9-QT, S-HRMR9-QTAS-H4MET9-QT, S-H4MET9-QTA
DESCRIPTION
The Akrapovic Racing and Evolution complete exhaust systems are the flag-ships of our product lines. They are designed for competition-oriented MX rid-ers who demand maximum performance from their exhaust systems. With their production quality, engine performance improvements and modern Hexagonal muffler design they satisfy the requirements of all riders. The systems are de-signed for two markets; in the US they are available with an approved spark ar-rester, and for the EU and other non-US markets they come with a noise damp-er. New for 2008 is additional chamber that helps to reduce noise emission and provides better power and torque at low rpm range.
PERFORMANCE
Measurements of the Akrapovic EVOLUTION system on the HONDA CRF 450 R (with muffler insert):
Power & Torque: The Akrapovic Evolution and Racing systems deliver a performance increase throughout nearly the entire rpm range. It is most pronounced in the middle and the top of the range. The systems deliver increased torque similar to the power increase. Max. increased power of 3 HP was measured at 10160 rpm, while max. power of 50.5 HP was measured at 9150 rpm.
CONFIGURATION
The Akrapovic Racing and Evolution systems differ only in their selection of materi-als. Stainless steel is used for the Racing, while the Evolution features titanium. The systems are composed of a conical header tube which is connected to the conical link pipe with a sleeve joint. The sleeve joint is secured with a silicon-shielded spring. The link pipe is welded to the muffler. For the Racing system inlet cap and inner perforation are made of stainless steel, while for the Evolution these parts are made of titanium. The outlet cap for Evolution is made of carbon fiber, while Racing features Akrapovic composite material. The outer sleeve of the muffler is made of titanium. The muffler is attached to the frame using an Akrapovic carbon-fiber clamp. An Akrapovic carbon-fiber heat shield is installed on the header tube.
PERFORMANCE
stock AKRAPOVIC max. increased power
max. rear wheel power HP / rpm
(measured on Dynojet ATV) 49.2 / 8250 50.5 / 9150 3 / 10160
interference crossover tubes
NO (CHAMBER) lambda sensor NO
header tube inner sleeves S.S. CNC machined header tube flanges S.S. LASER CUT
header tubes - collector connection
-collector / header tube -
link pipe connectionSLEEVE JOINT + SILICON
SHIELDED SPRINGS
link pipe - muffler connection
WELDEDmuffler
inlet cap /outlet cap
STAINLESS STEEL / CARBON-FIBER (racing)
TITANIUM / CARBON-FIBER (evolution)
muffler metal interiorSTAINLESS STEEL /
TITANIUM (megaphone)muffler outer sleeve
TITANIUM / TITANIUM or CARBON-
FIBER
muffler clamp CARBON-FIBER muffler bracket -
muffler insertEU YES heat shield CARBON-FIBER
US SPARK-ARRESTER catalytic converter NO
CONFIGURA-TION
CONFIGURATION
header tubes collector link pipe
material STAINLESS STEEL / TITANIUM
-STAINLESS STEEL /
TITANIUM
tube shape CONICAL - CONICAL
Technical specifications of Akrapovic exhaust systems and related products subject to change without notice.
ADDITIONAL DATA
weight comparison (kg)
stockAKRAPOVIC difference
3.36S.S. link pipe
TITANIUMlink pipe
stock - S.S. stock - titanium
3.05 2.46 0.31 0.9
noisemeasurements
(dB / rpm)
stock AKRAPOVIC
94 / 4500 94 / 4500
possibility of periodicservice without removing
A.E.S.
oil oil filter
YES YES
legal for street use NO
Akrapovič d.d. 2007 all rights
HONDA CRF 450 F (2008) RACING & EVOLUTION EXHAUST SYSTEM
Product code: S-H4MR9-QT, S-HRMR9-QTAS-H4MET9-QT, S-H4MET9-QTA
EXHAUST PHOTO
Akrapovič d.d. 2007 all rights
HONDA CRF 450 F (2008) RACING & EVOLUTION EXHAUST SYSTEM
Product code: S-H4MR9-QT, S-HRMR9-QTAS-H4MET9-QT, S-H4MET9-QTA
BIKE PHOTO
Akrapovič d.d. 2007 all rights
HONDA CRF 450 F (2008) RACING & EVOLUTION EXHAUST SYSTEM
Product code: S-H4MR9-QT, S-HRMR9-QTAS-H4MET9-QT, S-H4MET9-QTA
BIKE PHOTO
Akrapovič d.d. 2007 all rights
HONDA CRF 450 F (2008) RACING & EVOLUTION EXHAUST SYSTEM
Product code: S-H4MR9-QT, S-HRMR9-QTAS-H4MET9-QT, S-H4MET9-QTA
SHEMATIC
Akrapovič d.d. 2007 all rights
HONDA CRF 450 F (2008) RACING & EVOLUTION EXHAUST SYSTEM
Product code: S-H4MR9-QT, S-HRMR9-QTAS-H4MET9-QT, S-H4MET9-QTA
HONDA CRF450R Complete exhaust system/Racing line/Model year: 2008 Product code: S-H4MR9-QT
M-Q02410T FULL TITANIUM MUFFLER
P-MCTQ10 CARBON-FIBER CLAMP
P-HF114 HANGING FITTING ASSEMBLY
P-33 INNER SLEEVE
P-F6 FLANGE
H-H4MR9 HEADER TUBE
P-HSH4M1/A2 CARBON-FIBER HEAT SHIELD
V-TUV077 NOISE REDUCTION INSERT
P-VST3PO STICKER
P-S2 SPRING
P-VST2AL LEFT SIDE STICKER
SHEMATIC
Akrapovič d.d. 2007 all rights
HONDA CRF 450 F (2008) RACING & EVOLUTION EXHAUST SYSTEM
Product code: S-H4MR9-QT, S-HRMR9-QTAS-H4MET9-QT, S-H4MET9-QTA
HONDA CRF450R Complete exhaust system/Racing line with Spark Arrester/Model year: 2008 Product code: S-H4MR9-QTA
M-Q02410TA FULL TITANIUM MUFFLER
P-MCTQ10 CARBON-FIBER CLAMP
P-HF114 HANGING FITTING ASSEMBLY
P-33 INNER SLEEVE
P-F6 FLANGE
H-H4MR9 HEADER TUBE
P-HSH4M1/A2 CARBON-FIBER HEAT SHIELD
P-SA011 SPARK ARRESTER
P-VST3PO STICKER
P-S2 SPRING
P-VST2AL LEFT SIDE STICKER
SHEMATIC
Akrapovič d.d. 2007 all rights
HONDA CRF 450 F (2008) RACING & EVOLUTION EXHAUST SYSTEM
Product code: S-H4MR9-QT, S-HRMR9-QTAS-H4MET9-QT, S-H4MET9-QTA
HONDA CRF450R Complete exhaust system/Evolution line/Model year: 2008 Product code: S-H4MET9-QT
M-Q02405T FULL TITANIUM MUFFLER
P-MCTQ10 CARBON-FIBER CLAMP
P-HF114 HANGING FITTING ASSEMBLY
P-33 INNER SLEEVE
P-F6 FLANGE
H-H4MET10 HEADER TUBE
P-HSH4M1/A2 CARBON-FIBER HEAT SHIELD
V-TUV077/TI NOISE REDUCTION INSERT
P-VST3PO STICKER
P-S2 SPRING
P-VST2AL LEFT SIDE STICKERP-HF33 ANTISEIZING GREASE
SHEMATIC
Akrapovič d.d. 2007 all rights
HONDA CRF 450 F (2008) RACING & EVOLUTION EXHAUST SYSTEM
Product code: S-H4MR9-QT, S-HRMR9-QTAS-H4MET9-QT, S-H4MET9-QTA
HONDA CRF450R Complete exhaust system/Evolution line with Spark Arrester/Model year: 2008 Product code: S-H4MET9-QTA
M-Q02405TA FULL TITANIUM MUFFLER
P-MCTQ10 CARBON-FIBER CLAMP
P-HF114 HANGING FITTING ASSEMBLY
P-33 INNER SLEEVE
P-F6 FLANGE
H-H4MET10 HEADER TUBE
P-HSH4M1/A2 CARBON-FIBER HEAT SHIELD
P-SA011 SPARK ARRESTER
P-VST3PO STICKER
P-S2 SPRING
P-VST2AL LEFT SIDE STICKER
P-HF33 ANTISEIZING GREASE
SHEMATIC
Akrapovič d.d. 2007 all rights
HONDA CRF 450 F (2008) RACING & EVOLUTION EXHAUST SYSTEM
Product code: S-H4MR9-QT, S-HRMR9-QTAS-H4MET9-QT, S-H4MET9-QTA
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