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Ignitions and Electrical Ignition Components

Big Gun

Big Gun 19-23 Honda CRF 450L Power Box

$362.25 $357.13 Save $5.12

SKU: B0AC 40-R66

In Stock
In Stock
Ships by Jun 10
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The Big Guns TFI (Throttle and Fuel Injection) Power Box delivers an effortless performance boost by optimizing throttle mapping and fuel delivery. Simple to install and tuned for broad compatibility, this plug-and-play module sharpens throttle response, smooths power delivery, and enhances mid-range torque, all without sacrificing reliability. Designed with durability in mind, the TFI Power Box features rugged construction and weather-resistant sealing to withstand tough conditions. Highly recommended for any EFI unit with aftermarket exhaust. Plug-in technology (Does not interfere with stock ECU map). Integrated faceplate buttons provide easy adjustment. Increases horsepower and throttle response. No computer needed to adjust EFI. Third generation technology. 1 Year Limited Warranty. Installs in minutes.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandBig Gun
Part NumberB0AC 40-R66

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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