New Updated, HMF Generation 3/3.5 Optimizer 

Fits: 
Honda TRX 420FA Rancher 2009-2014

Brand New in stock ready to ship!

Highly Recommended with an aftermarket Exhaust System

The HMF Optimizer is a Fuel-Injection Controller that has been pre-programmed with the proper tuning specifications for your HMF exhaust. You must retune your machine when you're adding an exhaust system, so not tuning your machine will void the warranty of your exhaust.

• Pre-loaded map developed by HMF specifically for quads that run an HMF exhaust.
• No laptop necessary/push button tuning on the fly.
• Uses load based technology which allows for tuning in every gear.
• Ability to add fuel without altering the stock fuel map.
• Easy to see LED lights to indicate operating zone.
• Push button interface to allow quick fine tuning.
• Easy installation.
• Boost Sensing fuel control

"THE ULTIMATE IN ADJUSTABLE FUEL INJECTION"

fitment

TRX420FA Rancher AT 4x4 • 2009-2014
TRX420FA1 Rancher Automatic DCT 4x4 • 2014
TRX420FA2 Rancher Automatic DCT 4x4 EPS • 2014
TRX420FE Rancher ES 4x4 • 2009-2013
TRX420FE1 Rancher ES 4x4 • 2014
TRX420FM Rancher 4x4 • 2009-2013
TRX420FM1 Rancher 4x4 • 2014
TRX420FM2 Rancher 4x4 EPS 2014
TRX420FPA Rancher AT 4x4 w/Power Steering 2009-2014
TRX420FPE Rancher ES 4x4 w/Power Steering 2009-2013
TRX420FPM Rancher 4x4 w/Power Steering 2009-2013
TRX420TE Rancher ES 2010-2013
TRX420TE1 Rancher ES 2014
TRX420TM Rancher 2009-2013
TRX420TM1 Rancher 2014

Honda TRX420 Rancher HMF Gen 3/3.5 Optimizer