Honda CRF 250R (06-07) Racing & Evolution Exhaust System
Akrapovic Racing & Evolution Exhaust System (single muffler) Like the Akrapovic dual muffler RACING and EVOLUTION versions, the single muffler RACING and EVOLUTION system is designed for riders who know who to take full advantage of the specific performance benefits offered by these systems. We should especially mention the new Akrapovic HEXAGONAL design muffler, which with its carbon-fiber outlet cap goes exceptionally well with the design of the Honda. The muffler has a noise damper for the EU and other non-american markets, and a mandatory spark arrester for the American market. PERFORMANCE Measurements of the Akrapovic EVOLUTION system on the HONDA CRF 250R (without muffler insert): Power & Torque: the single muffler version delivers a perfomance increase mainly in the middle of the rpm range and at the top end and overrev. Good riders will know how to make the most of the advantage. max. rear wheel power HP / rpm (measured on Dynojet ATV) CONFIGURATION material interference crossover tubes PERFORMANCE stock AKRAPOVIC max. increased power 34.5 / 10900 35.6 / 11500 2 / 11800 - lambda sensor - header tube inner sleeves S.S. CNC MACHINED header tube flanges S.S. LASER CUT header tubes - collector connection link pipe - muffler connection - WELDED CONFIGURATION header tubes collector link pipe TITANIUM (Evolution) STAINLESS STEEL (Racing) - collector / header tube - link pipe connection muffler inlet cap /outlet cap TITANIUM (Evolution) STAINLESS STEEL (Racing) tube shape FLARED - CONICAL SLEEVE JOINT + SILICON SHILDED SPRING TITANIUM /CARBON-FIBER Description CONFIGURATION muffler metal interior TITANIUM (Evolution) STAINLESS STEEL (Racing) muffler outer sleeve TITANIUM or CARBON-FIBER (Evolution) TITANIUM (Racing) The Akrapovic Evolution system uses titanium tubing and the Akrapovic Racing uses stainless steel tubing. The tubes for the header assembly are flared to provide improved exhaust gas flow, while the link pipe is conical. The systems individual components header tube and link pipe are attached using a sleeve joint held together with a silicon-shielded spring. The link pipe is welded to the muffler. muffler clamp CARBON-FIBER OFF ROAD muffler bracket - EU NOISE DAMPER heat shield CARBON FIBER muffler insert US SPARK ARRESTER catalytic converter - ADDITIONAL DATA This system, unlike the stock system, has just a single muffler. It features a HEX- AGONAL design muffler, which goes exceptionally well with the design of the Honda. The muffler have in case of Evolution titanium inlet cap and perforated inner sleeve, in case of Racing stainless steel inlet cap and perforated inner sleeve. The outlet cap is made of carbon-fiber. The outer sleeve is made of titanium for the Racing version. For the Evolution both options of the outer sleeve are available carbon-fiber and titanium. The muffler is attached to the frame using an Akrapovic offroad carbon-fiber clamp. Evolution system also includes a carbon-fiber heat shield. The muffler has a noise damper for the EU and other non-american markets, and a mandatory spark arrester for the American market. weight comparison (kg) noise measurements (db / rpm) possibility of periodic service without removing A.E.S. legal for street use stock 4.13 stock AKRAPOVIC RACING EVOLUTION stock - RACING difference stock - EVOLUTION 2.35 1.95 1.78 2.22 AKRAPOVIC 96 / 5000 96 / 5000 oil YES oil filter Technical specifications of Akrapovic exhaust systems and related products subject to change without notice. NO YES 106667 (S-H2MR4-QT) EU market, 106668 (S-H2MR4-QTA) US market 105174 (S-H2MET4-QT) EU market, 105151 (S-H2MET4-QTA) US market 2
Akrapovic Racing & Evolution Exhaust System (single muffler) Exhaust Photo CARBON-FIBER MUFFLER CLAMP 106667 (S-H2MR4-QT) EU market, 106668 (S-H2MR4-QTA) US market 105174 (S-H2MET4-QT) EU market, 105151 (S-H2MET4-QTA) US market 3
Akrapovic Racing & Evolution Exhaust System (single muffler) Bike Photo 106667 (S-H2MR4-QT) EU market, 106668 (S-H2MR4-QTA) US market 105174 (S-H2MET4-QT) EU market, 105151 (S-H2MET4-QTA) US market 4
Akrapovic Racing & Evolution Exhaust System (single muffler) Bike Photo 106667 (S-H2MR4-QT) EU market, 106668 (S-H2MR4-QTA) US market 105174 (S-H2MET4-QT) EU market, 105151 (S-H2MET4-QTA) US market 5
Akrapovic Racing Exhaust System (single muffler) HONDA CRF250R Complete exhaust system/racing line/model year: 2006-2007 S-H2MR4-QT P-HF171 HANGING FITTING ASSEMBLY P-43 INNER SLEEVE P-S2 SPRING P-F19 FLANGE Schematic H-H2MR4 HEADER TUBE P-MCTQ6 CARBON-FIBER CLAMP M-Q01202T TITANIUM MUFFLER P-ST1AM STICKER V-TUV062 NOISE REDUCTION INSERT P-HSK2M1 CARBON-FIBER HEAT SHIELD 106667 (S-H2MR4-QT) EU market 6
Akrapovic Racing Exhaust System (single muffler) HONDA CRF250R Complete exhaust system/racing line/spark Arrester/Model year: 2006-2007 S-H2MR4-QTA P-HF171 HANGING FITTING ASSEMBLY P-43 INNER SLEEVE P-S2 SPRING P-F19 FLANGE Schematic H-H2MR4 HEADER TUBE P-MCTQ6 CARBON-FIBER CLAMP M-Q01202TA TITANIUM MUFFLER P-ST1AM STICKER P-SA002 SPARK ARRESTER P-HSK2M1 CARBON-FIBER HEAT SHIELD 106668 (S-H2MR4-QTA) US market 7
Akrapovic Evolution Exhaust System (single muffler) P-HF171 HANGING FITTING ASSEMBLY P-43 INNER SLEEVE P-F19 FLANGE HONDA CRF250R Complete exhaust system/evolution line/model year: 2006-2007 S-H2MET4-QT P-S2 SPRING Schematic H-H2MET4 HEADER TUBE P-MCTQ6 CARBON-FIBER CLAMP M-Q00305T TITANIUM MUFFLER P-ST1AM STICKER V-TUV045 NOISE REDUCTION INSERT P-HSK2M1 CARBON-FIBER HEAT SHIELD 105174 (S-H2MET4-QT) EU market 8
Akrapovic Evolution Exhaust System (single muffler) HONDA CRF250R Complete exhaust system/evolution line/spark Arrester/Model year: 2006-2007 S-H2MET4-QTA P-HF171 HANGING FITTING ASSEMBLY P-43 INNER SLEEVE P-S2 SPRING P-F19 FLANGE Schematic H-H2MET4 HEADER TUBE P-MCTQ6 CARBON-FIBER CLAMP M-Q00305TA TITANIUM MUFFLER P-ST1AM STICKER P-SA002 SPARK ARRESTER P-HSK2M1 CARBON-FIBER HEAT SHIELD 105151 (S-H2MET4-QTA) US market 9
Akrapovic Racing & Evolution Exhaust System (single muffler) 35,0 32,5 30,0 AKRAPOVIC SINGLE COMPLETE EXHAUST STOCK EXHAUST Diagram / Chart 26 25 24 27,5 23 WhlPwr 25,0 22,5 22 21 EngTrq 20,0 17,5 15,0 6000 7000 8000 9000 10000 11000 12000 13000 EngSpd RPM (Sorted) 106667 (S-H2MR4-QT) EU market, 106668 (S-H2MR4-QTA) US market 105174 (S-H2MET4-QT) EU market, 105151 (S-H2MET4-QTA) US market 10 20 19 18