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The Honda TRX 400EX is available as a Slip-On, Full, and MX System in the Performance and Competition exhausts. Each series Slip On exhaust picks up 10-15% more horse power and torque throughout the power curve. The Full System adds another 5-10% more horse power while the MX system increases performance for high speed racing. The mufflers will be roughly 4-6dB louder than the stock exhaust, but the Competition Inserts and HMF Quiet Core can reduce that 2-6dB.
Fits: (99-14) TRX 400EX, EX2, X, SporTrax
FUEL TUNING IS REQUIREDLEARN MORE
Fuel Tuning is absolutely required when installing an HMF Exhaust on this machine. Failure to tune the engine can cause excessive damage to the exhaust system and engine, while voiding the warranty on your exhaust and possibly on your machine. (check with local dealer). See the tuning settings below for the proper fuel tuning solution on your machine.
WARRANTY KILLER PERFORMANCE
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