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Honda® Rancher 400

The Honda Rancher 400 is available as a Slip-On system in the Performance Series.  The Performance exhaust series picked up nearly 2 horse power with nearly 2lb of torque.  At idle, the Performance Series is 2-4 dB louder than the stock muffler, but the HMF Quiet Core can drop that volume roughly 1-2 dB more. 

Exhaust Fits: FourTrax Rancher 400 (4X4)

Fuel tuning is required learn 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.

Exhaust Systems

Honda® Rancher 400 ATV Accessories

Tuning

Recommended Tuning
142 Kehin Round

HMF Basic Jet Kit Includes
138, 142, 145 Kehin Round

Low Speed Fuel

Going down on the number scale will reduce low speed fuel. Going up on the number scale will increase low speed fuel.

Mid Range Fuel

Going down on the number scale will reduce mid range fuel. Going up on the number scale will increase mid range fuel.

High End Fuel

Going down on the number scale will reduce high end fuel. Going up on the number scale will increase high end fuel.

Green Lower Switch Point

Going down on the number scale will turn green mode on earlier. Going up on the number scale will turn green mode on later. These modes typically will not need adjusted from their base setting.

Yellow Lower Switch Point

Going down on the number scale will turn yellow mode on earlier. Going up on the number scale will turn yellow mode on later. These modes typically will not need adjusted from their base setting.

Red Lower Switch Point

Going down on the number scale will turn red mode on earlier. Going up on the number scale will turn red mode on later. These modes typically will not need adjusted from their base setting.

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