New to Powersport Superstore? Try our Year-Make-Model search and find the right parts for your ride by clicking "My Garage" on the upper-right! ➡

Big Gun 40-R50H TFI Power Box

SKU: 5827688

Big Gun 40-R50H TFI Power Box

Big Gun
$263.99
$263.99 $329.99
Sale Sold out
/
Shipping calculated at checkout.
In stock and ready for shipping
This is a pre order item. We will ship it when it comes in stock.
Increases horsepower and throttle response. Installs in minutes. Third generation technology. No computer needed to adjust EFI. Plug-in technology (Does not interfere with stock ECU map). Integrated faceplate buttons provide easy adjustment. Highly recommended for any EFI unit with aftermarket exhaust. 1 Year Limited Warranty.

Vehicle Fitment:

2015 Arctic Cat Wildcat 1000
2015-2017 Arctic Cat Wildcat 4X
2016-2017 Arctic Cat Wildcat X
2015 Arctic Cat Wildcat X 1000
2015-2017 Arctic Cat Wildcat X Limited
2016 Arctic Cat Wildcat X SE
2018 Textron Wildcat 4X LTD
2018-2019 Textron Wildcat X
2018 Textron Wildcat X LTD
Secure, Trusted, and Encrypted

Protected by industry-leading 256-bit SSL encryption and backed by Shopify’s PCI DSS–compliant infrastructure. Every page, click, and transaction is encrypted and monitored for threats — so you can shop with confidence knowing your data stays protected.

Parts for Every Machine

We stock aftermarket parts, gear and accessories for motorcycles, ATVs, UTVs, snowmobiles, personal watercraft, and even performance cars — all backed by expert support and live inventory.

Real-Time Fitment Accuracy

Search by Year, Make, and Model with confidence. Our proprietary vehicle fitment system ensures you’re only shown what fits — no guesswork, no returns — just parts that fit.

Fast, Trackable Shipping

We ship from over 20 U.S. warehouses — often same or next business day. Every order includes tracking and transparent fulfillment updates from start to finish, all processed through a secure, encrypted checkout.

Quick Links

Ride With Us. Stay Connected.

Follow us for real-time fitment updates, gear drops, and pro tips from the garage. No spam, just parts, tech, and news for riders like you.

Your Garage

Add a Vehicle