Front Runner Pro Water Tank With Mounting System 20L

SKU: WTAN089

Front Runner 20L Pro Water Tank front view with steel lockable tap

Front Runner Pro Water Tank mounted on Slimline II roof rack lifestyle view

Front Runner 20L water tank mounting bracket and stabilizing hardware detail

Front Runner Pro Water Tank With Mounting System 20L

SKU: WTAN089

$144.00

Call Our Experts: (844) 200-3979

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Call Our Experts: (844) 200-3979

Easy Financing

60 Days Returns!

Safe & Secure Checkout

20 Liters of Secure, Trail-Ready Water on Your Front Runner Roof Rack

Running out of water at camp is the kind of mistake you only make once. The Front Runner Pro Water Tank with Mounting System 20L solves the problem at the source. 20 liters (5.2 gallons) of food-grade, BPA-free water storage that bolts cleanly to your Front Runner roof rack and pulls off in seconds when you need to bring it to the table, the kitchen, or the campsite. Lockable steel tap. Removable mounting bracket. Compatible with any Front Runner Slimline II rack out of the box. This is the Front Runner water tank built for serious overlanders who do not want to compromise on capacity, security, or convenience.

We have run a lot of overland water tank solutions on overland builds. Jerry can holders. Soft bladders. Inline plumbing systems. The 20L Pro Water Tank hits a sweet spot: enough capacity for a couple days of two-person camping, small enough to lift down without a hernia, secure enough to stay put on washboard roads.

Built for the Front Runner Roof Rack System

The 20L Pro Water Tank with Mounting System is engineered as a dedicated Front Runner roof rack accessory. The included mounting brackets bolt directly to the Slimline II tray's 8mm T-slots, no drilling, no adapters, no modifications. Side stabilizing brackets keep the tank rock-solid even on washboard, rutted dirt, and high-speed gravel. Once mounted, it does not budge.

What makes this water tank smarter than a fixed plumbing solution is the removability. The mounting bracket is designed so you can pop the tank off the rack and bring it down to camp without tools. Place it on a camp table, a fridge slide, an Alu-Cab table, or just on the tailgate. When you are done, pop it back on the rack. No hoses to disconnect, no fittings to fight with, no spilled water in the truck bed.

Mounting Bracket Stays Out of the Way

One small detail Front Runner got right: the mounting bracket is designed so it does not interfere with the cap operation. You can fill the tank in place on the rack without unbolting anything. Just unscrew the cap, fill, and you are done. That sounds basic, but a lot of competitor water tanks force you to remove the tank to access the fill port. Front Runner's design saves you that hassle every single time you top off.

20 Liters of BPA-Free, Food-Grade Storage

The tank itself is built from food-grade polyethylene that is fully BPA-free. That means the water you store in it actually tastes like water, not plastic, even after sitting in summer sun on the roof rack. This BPA-free water tank uses polyethylene that is also UV-stable, impact-resistant, and freeze-tolerant down to the temperatures most overland trips will throw at it. Drop the polyethylene water tank on a rocky trailside while loading the truck and it shrugs it off.

Capacity lands at 20 liters, which converts to 5.2 US gallons. This 20 liter water tank holds enough for two people on a 3-day trip if you are conservative, or roughly 1.5 to 2 days for the same group at full hydration plus dishwashing and cooking. For longer expeditions or larger groups, run two of these 5.2 gallon water tanks side by side. The Slimline II tray has the T-slot real estate for it.

Lockable Steel Tap for Camp Security

Every Front Runner Pro Water Tank ships with a steel tap (not plastic) that threads into the integrated 1/2 inch BSP polyethylene fitting. The lockable water tap is steel, not plastic, and works with the Front Runner Rack Accessory Lock (Small), sold separately, which threads through the tap to prevent it from being opened or unscrewed without a key.

Why use a lockable water tap on a roof rack water tank? Two reasons. First, parking lot pranksters and curious hands do not get to drain your camp water supply when you are off on a hike. Second, the lock prevents accidental dispensing during transit. If a strap or piece of cargo nudges the tap on the highway, the lock keeps it sealed.

Universal 1/2 Inch BSP Threading

The tank's 1/2 inch BSP (British Standard Pipe) thread fitting is universal in the camping and plumbing world. If you ever want to swap the supplied tap for a different valve, a hose-fed kitchen sink, a quick-connect coupling, or a foot pump system, the standard threading lets you do it. The Front Runner tap is excellent out of the box, but the door is open for custom plumbing if your build calls for it.

Specifications

Specification	Detail
Brand	Front Runner
SKU	WTAN089
Capacity	20 L / 5.2 US gal
Tank Material	Food-grade polyethylene, BPA-free
Tap Material	Steel, lockable
Fitting Size	1/2" BSP thread (polyethylene)
Mounting	Bolt-on to Front Runner Slimline II rack via included brackets
Removable	Yes, lifts off rack without tools
Lock Compatibility	Front Runner Rack Accessory Lock / Small (sold separately)

What's in the Box

20L Pro Water Tank (food-grade polyethylene)
Steel lockable tap with 1/2" BSP thread fitting
Mounting bracket for Front Runner Slimline II roof rack
Side stabilizing brackets
Mounting hardware
Installation instructions

Pros & Cons

Pros

Removable design lets you lift the tank off the rack without tools for camp use
Food-grade BPA-free polyethylene keeps water tasting clean even in sun-baked storage
Steel lockable tap (not plastic) and 1/2" BSP universal fitting open the door for custom plumbing
Direct bolt-on integration with Front Runner Slimline II roof racks, no drilling needed

Cons

Engineered for Front Runner Slimline II racks; non-Front Runner racks need custom mounting solutions
Rack Accessory Lock for the tap is sold separately

Frequently Asked Questions

Will the Front Runner 20L Pro Water Tank fit my non-Front Runner roof rack?

The included mounting brackets are engineered specifically for Front Runner Slimline II racks (8mm T-slot). It will not bolt directly to non-Front Runner racks without custom adapters. If you are running a Prinsu, Sherpa, or other extruded aluminum rack, contact us at offroadtents.com and we will help you spec a compatible mounting solution.

Is the tap lockable?

Yes. The included steel tap is designed to accept the Front Runner Rack Accessory Lock (Small), which is sold separately. The lock threads through the tap to prevent unauthorized access or accidental opening during transit.

Can I use this water tank for drinking water?

Absolutely. The tank is made from food-grade polyethylene and is fully BPA-free, designed specifically for storing potable drinking water. We still recommend periodic cleaning with a mild bleach solution between trips and full draining when storing long-term.

How much water will 20 liters last on a typical overland trip?

20 liters (5.2 gallons) lasts roughly 2 to 3 days for two people doing conservative camp use (drinking, cooking, dishwashing). For larger groups or longer expeditions, mount two tanks side by side on the Slimline II tray, the T-slot real estate accommodates it.

How do I remove the tank from the roof rack?

The mounting bracket is designed for tool-free removal. Release the bracket, lift the tank straight up off the rack, and walk it down to camp. Reinstall is the same process in reverse. No need to disconnect plumbing, no spilled water.

Top Off Your Overland Build with Reliable Water Storage

The Front Runner Pro Water Tank with Mounting System 20L is the water solution serious overlanders pick when they want secure on-rack storage that pulls down quickly for camp use. Add it to your cart and pair it with a Front Runner Rack Accessory Lock for full camp security. We are here at offroadtents.com for fitment, mounting, and accessory questions on every Front Runner water tank we ship.