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RED HOT 2021 TrailBoss

LordBear

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Joined
Nov 2, 2025
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Location
Indiana
Current Ride
2021 trailboss
Military
National guard
just bought a 2021 LT Trail boss with 75k. Her name is R0ZRED. 5.3. Max towing.

So far I’ve installed:
Iron bison running boards
Rough country tonneau cover
Weather tech hood protector
In groove window guards
Undercoating
Blue Sumo springs with spacer

Did an upper intake clean out
Changed the oil to mobile1 extended performance high mileage 7qts 0w20, 1qt 5w30, and a little prolube. Changed fuel to 89. Averaging about 18.4 mpg with roughly equal city/highway driving.

I have a few other cosmetic touches I want to add but not really sure what performance mods I should mess with.
I do a lot of volunteer work with her off road and tow our Scout Troops trailer on trails a few times a year. I currently have Duratracs but want to switch over to KO3s when they are worn. Any other mods I should consider?

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