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07-14 Honda Rancher 420 Big Gun EFI Power Box

Retail Price: $269.99
You save: $29.00  (11%)
Our Price: $240.99

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  • Model: 40-R52B
  • Dimensional Shipping Weight: 3.1lbs
  • Manufactured by: Big Gun


  • Fit Note: Will not default computers or trip engine lights
The technology behind the Big Gun TFI is that it functions like a carburetor. It takes the knowledge & experience that many of us have & converts it to a fuel injection interface. The TFI interface makes it easy to tune for different modifications. The TFI is to be used on EFI ATVs, UTVs & dirtbikes that have performance enhancements which require more fuel to run correctly; such as pipes, heads & even big bore kits. With its patented technology, this box does not default computers or trip engine lights. The TFI uses load based technology to monitor the demand on your motor and provide a fuel solution to reach optimum performance. This unit plugs directly into your factory wiring harness for easy installation.

This part fits the following

ATVHondaTRX420FA Rancher AT20094201
ATVHondaTRX420FA Rancher AT20104201
ATVHondaTRX420FA Rancher AT20114201
ATVHondaTRX420FA Rancher AT20124201
ATVHondaTRX420FA Rancher AT20134201
ATVHondaTRX420FA Rancher AT20144201
ATVHondaTRX420FA1 FourTrax Rancher 4x4 AT DCT20144201
ATVHondaTRX420FA2 FourTrax Rancher 4x4 AT DCT w/EPS20144201
ATVHondaTRX420FE FourTrax Rancher 4X4 ES20074201
ATVHondaTRX420FE FourTrax Rancher 4X4 ES20084201
ATVHondaTRX420FE FourTrax Rancher 4X4 ES20094201
ATVHondaTRX420FE FourTrax Rancher 4X4 ES20104201
ATVHondaTRX420FE FourTrax Rancher 4X4 ES20114201
ATVHondaTRX420FE FourTrax Rancher 4X4 ES20124201
ATVHondaTRX420FE FourTrax Rancher 4X4 ES20134201
ATVHondaTRX420FE1 FourTrax Rancher 4x4 ES20144201
ATVHondaTRX420FM FourTrax Rancher 4X420074201
ATVHondaTRX420FM FourTrax Rancher 4X420084201
ATVHondaTRX420FM FourTrax Rancher 4X420094201
ATVHondaTRX420FM FourTrax Rancher 4X420104201
ATVHondaTRX420FM FourTrax Rancher 4X420114201
ATVHondaTRX420FM FourTrax Rancher 4X420124201
ATVHondaTRX420FM FourTrax Rancher 4X420134201
ATVHondaTRX420FM1 FourTrax Rancher 4x420144201
ATVHondaTRX420FM2 FourTrax Rancher 4x4 w/EPS20144201
ATVHondaTRX420FPA Rancher AT 4x4 w/PS20094201
ATVHondaTRX420FPA Rancher AT 4x4 w/PS20104201
ATVHondaTRX420FPA Rancher AT 4x4 w/PS20114201
ATVHondaTRX420FPA Rancher AT 4x4 w/PS20124201
ATVHondaTRX420FPA Rancher AT 4x4 w/PS20134201
ATVHondaTRX420FPA Rancher AT 4x4 w/PS20144201
ATVHondaTRX420FPE Rancher ES 4x4 w/PS20094201
ATVHondaTRX420FPE Rancher ES 4x4 w/PS20104201
ATVHondaTRX420FPE Rancher ES 4x4 w/PS20114201
ATVHondaTRX420FPE Rancher ES 4x4 w/PS20124201
ATVHondaTRX420FPE Rancher ES 4x4 w/PS20134201
ATVHondaTRX420FPM Rancher 4x4 w/PS20094201
ATVHondaTRX420FPM Rancher 4x4 w/PS20104201
ATVHondaTRX420FPM Rancher 4x4 w/PS20114201
ATVHondaTRX420FPM Rancher 4x4 w/PS20124201
ATVHondaTRX420FPM Rancher 4x4 w/PS20134201
ATVHondaTRX420TE FourTrax Rancher ES20074201
ATVHondaTRX420TE FourTrax Rancher ES20084201
ATVHondaTRX420TE FourTrax Rancher ES20094201
ATVHondaTRX420TE FourTrax Rancher ES20104201
ATVHondaTRX420TE FourTrax Rancher ES20114201
ATVHondaTRX420TE FourTrax Rancher ES20124201
ATVHondaTRX420TE FourTrax Rancher ES20134201
ATVHondaTRX420TE1 FourTrax Rancher ES20144201
ATVHondaTRX420TM FourTrax Rancher20074201
ATVHondaTRX420TM FourTrax Rancher20084201
ATVHondaTRX420TM FourTrax Rancher20094201
ATVHondaTRX420TM FourTrax Rancher20104201
ATVHondaTRX420TM FourTrax Rancher20114201
ATVHondaTRX420TM FourTrax Rancher20124201
ATVHondaTRX420TM FourTrax Rancher20134201
ATVHondaTRX420TM1 FourTrax Rancher20144201
ATVHondaTRX500FA Foreman Rubicon20124991
ATVHondaTRX500FA Foreman Rubicon20134991
ATVHondaTRX500FE Foreman 4x4 ES20125001
ATVHondaTRX500FE Foreman 4x4 ES20135001
ATVHondaTRX500FM Foreman 4x420124751
ATVHondaTRX500FM Foreman 4x420134751
ATVHondaTRX500FPA Foreman Rubicon GPScape w/EPS20125001
ATVHondaTRX500FPA Foreman Rubicon GPScape w/EPS20135001
ATVHondaTRX500FPE Foreman 4x4 ES w/PS20125001
ATVHondaTRX500FPE Foreman 4x4 ES w/PS20135001
ATVHondaTRX500FPM Foreman 4x4 w/PS20125001
ATVHondaTRX500FPM Foreman 4x4 w/PS20135001

This product was added to our catalog on Tuesday 27 September, 2016.

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