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Mufflers MUFFLERS ARE MANDATORY ALL CARS MUST PASS THE 35 RP NOISE TEST STRICTLY ENFORCED EVEN THOUGH THERE IS A MANDATED MUFFLER FOR YOUR DIVISION YOUR CAR* MUST PASS THE NOISE LEVEL TEST. SPECIAL NOTE EACH CAR HAS ITS OWN SOUND AS SEVERAL FACTORS VERY THE SOUND FROM THE VALVES , TIMING, CAMSHAFT CONFIGURATION RPM’S GEAR RATIO ETC, WITH THAT IN MIND WE TESTED OVER 17 MUFFLERS ON VARIOUS TOP COMPETING CARS AT 35 RP IN 2006 THE MUFFLERS MANDATED REPRESENT THE BEST POSSIBLE MUFFLER FOR THAT CLASS WITH THAT IN MIND, JUST BECAUSE YOU HAVE THE MANDATED MUFFLER IT IS NOT AUTOMATIC THAT YOU WILL PASS THE NOISE TEST. MANDATORY MUFFLERS 4 CYLINDER STOCK, MINI SPRINTS MUST USE AUTOZONE MUFFLER PART # 27657 IT IS ALSO MANDATORY THE NUMBER ON OUTSIDE OF SHELL OF THE MUFFLER MUST BE 159150. 4 CYLINDER STOCKS MUST ALSO USE A 12 INCH LONG 2 INCH OD TAIL PIPE WITH A TURN DOWN THE 600cc MINI SPRINTS ALSO MUST USE A TURN DOWN AT A 45 DEGREE ANGLE AWAY FROM COCKPIT. 4 CYLINDER MINI LATE MODELS MUST USE AUTOZONE MUFFLER PART # 27657, OR 27639 OR NAPA PART NUMBER 17715 AND ALL MUST USE A TURN DOWN MOD LITE AND SPORTSMAN DWARF CARS MUST USE AUTOZONE PART # 27657 OR THE STOCK 06 KAWASAKI NINJA ZX10 MUFFLER IT IS BLACK IN COLOR ALL MUFFLERS MUST HAVE TAG WELDED OR POP RIVETED TO IT WITH CAR # ON IT OTHER THAN TO MOUNT SECURELY ANYONE WHO TAMPERS OR MODIFIES MUFFLER IN ANYWAY WILL BE SEVERELY DEALT WITH .
US35RACE@ROADRUNNER.COM
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