HMF Racing Competition Exhaust for Arctic Cat DVX 400. Available in a Slip-On and Full System. The 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. The mufflers will be roughly 4-6dB louder than the stock exhaust, but the Competition Inserts can reduce that 2-6dB.
HMF Racing Competition Exhaust for DVX 400. It features 3 inserts that affect the sound and power differently, giving you complete control over the type of power and sound you need.
All HMF exhaust jetting has been predetermined with proper jetting specs to ensure the ultimate performance from your HMF product and should be used as a reference only. The proper jetting will ensure the full performance potential from your HMF aftermarket high performance pipe and is necessary on all machines.
Model Specific Information
Recommended Tuning
Slip On – 145 Mikuni Small Main Jet
Full System – 150 Mikuni Small Main Jet
Removing the Air Box Lid or aftermarket filter may require 170-175 Mikuni Small Main Jet
HMF Basic Jet Kit Includes
140, 145, 150, 155, 165, 170, 175 Mikuni Small Main Jet
