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Mammoth FlexPanel — Openable Side Window Expansion Panel for INEOS Grenadier

Regular price $1,200.00

Shipping calculated at checkout

INSTALL Lossless / Non-Destructive Installation
WEIGHT 35.3 lbs
SPECIFICATIONS 37.4" x 24.0" x 4.3"
MATERIAL Aluminum Alloy + 304 Stainless Steel Frame
MODEL INEOS Grenadier
DESIGN FEATURE Openable Panel (Cleaning Access / Extra Workspace)
RECOMMENDED USE Window Cleaning, Outdoor Cooking Space, Temporary Item Placement
TESTED Road-Tested Over 12,000 km

A side-window storage panel that doesn't just add space — it opens up, giving you a functional workspace right at the side of your Grenadier when you need it.

Built to take a beating. The main structure is full aluminum, reinforced with a 304 stainless steel mounting frame, delivering serious structural strength for demanding off-road use — no flex, no rattle, no compromise on durability.

Open when you need it. Unlike fixed side panels, the FlexPanel swings open, making it easy to clean mud, dust, and debris off your side windows after a hard day on the trail. Open it up and it doubles as extra usable space — perfect for setting up an outdoor cooking station or temporarily staging gear while you're loading or unloading camp.

Zero compromise install. Fully non-destructive installation, matched to factory mounting points from reverse-engineered vehicle data — no drilling, no cutting, fully reversible.

Proven, not just promised. Road-tested over 12,000 km across real-world off-road conditions, so it's already been through the mud, dust, and vibration before it ever reaches your Grenadier.

Whether you're deep in the backcountry or just back from a weekend trail run, the FlexPanel gives you the strength of a fixed panel with the practicality of one that actually opens.

Before placing your order, please contact customer service for a shipping quote and provide your shipping address.


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