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  1. Tonneau Cover
  2. Retrax
  3. Retractable - Manual
  4. Low Profile - Top of Bed Rails
  5. Aluminum
  6. Matte
THIS ITEM IS NOT A FIT FOR
2000 Lexus ES 300
Retrax

RetraxPRO MX Hard Tonneau Cover - Retractable - Aluminum - Matte Black

Part Number: RTX37FR
In Stock
$2,349.99
Retail:$2,449.99
You Save: $100.00
Tonneau Cover
Not Confirmed to Fit

2000 Lexus ES 300

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Product Images

Retractable cover opens and closes manually with a pop-up, locking handle. That, paired with impact-resistant, 1" thick aluminum, will give you the best security for the cargo in your bed. Sleek, streamlined design complements your vehicle. Great Prices for the best tonneau cover from Retrax. RetraxPRO MX Hard Tonneau Cover - Retractable - Aluminum - Matte Black part number RTX37FR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (66)
  • Q & A (0)
  • Photos

Retrax Tonneau Cover - RTX37FR

Highlights

  • Custom Fit for Your Vehicle: Secures to your truck bed with model-specific clamps and hardware
  • Keeps Gear Secure: 1" thick aluminum panels and locking handle protect cargo from theft.
  • Full Bed Access Fast: Retracts smoothly into canister for quick loading of large items.
  • Stays Dry in Weather: Foam seals, weather stripping, and drain tubes channel water away.
  • Built to Last: Heavy-duty aluminum holds 500 lbs evenly distributed; matte finish resists scratches.
  • Low-Profile Look: Rails sit 1" above bed for a clean, streamlined appearance.
Made in USA

Features to know about

Secure Your Gear: 1" Thick Aluminum Slats

When you need serious protection for the tools or gear in your truck bed, this cover delivers. The 1" thick aluminum slats are impact and weather resistant, keeping everything underneath safe from dents, rain, or snow. Paired with a locking handle that secures anywhere along the rails, you can keep part of the bed covered for smaller items while hauling longer cargo in back. Once locked and the tailgate closed, your cargo is out of sight and well protected.

Opened RetraxPRO MX lock and raised pop-up handle ready to retract cover on truck bed.

Partial open position of RetraxPRO MX retractable truck bed cover latched along side rails.

Truck tailgate open while RetraxPRO MX retractable tonneau cover stays closed, showing independent operation.

Full Bed Access in Seconds: Manual Retractable Design

Carrying large or oddly shaped loads doesn’t mean taking the cover off. The retractable design slides open smoothly on sealed ball-bearing rollers without binding or needing lubrication. The cover stores neatly in a compact canister at the front of the bed, leaving room for gear underneath. You can open or close it with one hand using the pop-up handle, so quick access is easy even when you’re on the go.

Side-by-side view of RetraxPRO MX pop-up handle for retractable tonneau cover showing one-handed operation.

Transparent view of RetraxPRO MX retractable tonneau cover rolled into canister showing spiral track system.

RetraxPRO MX angled storage canister showing space-saving design under truck bed cover.

RetraxPRO MX retractable tonneau cover shown flush with canister for seamless low-profile truck bed fit.

Truck bed with 5th wheel hitch covered by low-profile RetraxPRO MX retractable tonneau cover.

All-Weather Defense: Sealed Edges and Drain Tubes

Rain, snow, and dust stay where they belong—outside. Weather stripping and foam seals surround the edges to keep water out, while the cover overlaps the tailgate for extra protection. Any moisture that gets inside the canister is directed out through two included drain tubes, so the cover stays dry and mildew-free. This setup keeps your cargo clean and secure through all kinds of weather.

Close-up of RetraxPRO MX bulkhead weather strip and foam seal protecting truck bed from moisture and dust.

Close-up of RetraxPRO MX drain tube used to route water from storage canister through truck bed drain holes.

Lasting Durability and Sleek Style: Matte Black Finish

Built to handle heavy use, the cover supports up to 500 lbs of evenly distributed weight. The matte black powder coat resists scratches and fading, so it keeps its clean look over time. With rails that sit just 1" above the bed, it adds a low-profile finish that blends smoothly with the truck’s lines while standing up to years of loading, weather, and travel.

Truck with RetraxPRO MX matte black aluminum retractable tonneau cover showcasing sleek low-profile design.

Simple Setup: No-Drill, Clamp-On Installation

Getting it installed is straightforward. The rails clamp directly onto the bed—no drilling required—and the canister comes preassembled with the cover already inside. Once everything’s aligned, just tighten the clamps and connect the drain tubes. It’s a solid, secure fit without extra tools or complicated steps.

Two people installing RetraxPRO MX retractable truck bed cover canister onto pickup bed rails.

Specs

Weight and Capacity

  • Weight capacity: 500 lbs evenly distributed

Dimensions

  • Canister dimensions: 13-1/2" deep x 12" tall

Cross-section of RetraxPRO MX retractable tonneau cover showing sealed ball-bearing rollers and side rail assembly.

Warranty

  • Limited lifetime warranty

Installation diagram of RetraxPRO MX retractable tonneau cover showing labeled parts and mounting locations.

80483 Retrax RetraxPRO MX Hard Bed Cover - Retractable - Aluminum - Matte

Installation Details RTX37FR Installation instructions

This Product Fits The Following Vehicles




Ratings & Reviews

4.6

66 reviews
Review sort icon
Retractable cover opens and closes manually with a pop-up, locking handle. That, paired with impact-resistant, 1" thick aluminum, will give you the best security for the cargo in your bed. Sleek, streamlined design complements your vehicle.

by:

A very nice cover. So far, it’s kept the bed and it’s contents dry. I had the face of the cartridge (the part that becomes the rear of the bed) sprayed with Line-X to match the rest of the bed and to offer some degree of protection. But the metal is very thin there and it didn’t take long for it to become dented. Also the drain fittings that attach to the bottom of the cartridge are delicate. I’ve had to order replacement fittings and it looks like the second set have broken again.



by:

I love this cover. I had one on a different truck, but it had the rails that could be used for a bike, kayak or ladder rack. I thought I had purchased the same rails, but when received, found that it was not the same. I didn’t realize it until after I installed it. Wish I had noticed it earlier as the rails to replace are $500. Be certain you order carefully.



by:

I have owned this roll top truck bed cover for a year now and still absolutely love it. I've owned other similar ones over the past twenty five years and this one is and has been the best. Sturdy, solid and so far, maintenance free. It certainly more weather (water) resistant as well. It definitely was more expensive than the other covers I've purchased in the past but the bitterness of poor quality remain forever and the higher cost of something well made are soon forgotten as you use the product everyday. Highly recommend.



by:

High quality cover that works great



by:

My third Retrax. The fit and finish is on point. Nice job... Again!



by:

Easy installation. No problems after a year on my truck. Very satisfied with the purchase.



by:

Only had this cover for a few weeks but it so far.



by:

I had some damage. It was a dent in the main box. I went ahead and used it anyway. I didn’t call or ask for return because I needed the cover right away and I messed the box up which would make the return hard to do. This was not etrailers fault. It was a packing issue from Retrax.



by:

The RetraxPRO MX Hard Tonneau Cover was very easy to assemble and install. Item was packaged very well for shipping. I would recommend this tonneau cover.



by:

Very well built and easy to use, great product.



by:

Vert good quality. No failures despite repeated use.



by:

This cover looks amazing and rolls so smooth. No heavy trifold flipping. I have the 8’ bed and it works great.



by:

On my previous truck, we had installed a soft snap-on tonneau cover. While it looked great, its performance over time decreased significantly, particularly in cold weather! So this time around, I decided to splurge and purchase a high-quality roll-top hard cover. I am SO HAPPY that I did! As importantly as its ease of installation and use, it is lockable so I will no longer have sleepless nights while traveling, worrying about the items in the truck bed. eTrailer was a great help in expediting the delivery of this item, as my HOA requires pickup trucks to have their beds covered... Thank You!



by:

Nice product. More difficult to get the rails attached than it should have been. Very glad I had 2 strong guys helping me.

Love the results.



by:

I like the old latch system better.
The
wire loom for drains is not going to last long.



by:

Great quality very happy with this. Would recommend to anyone looking for a nice retractable cover.



by:

Item came on time and was very easy to install, but you need somebody to help you lift and put in the back of the truck as instructed. Its not that heavy, but just too awkward for one person to lift and place.



by:

The tonneau works well. I wanted something that would be pretty secure (aluminum and locking) and easy to open/close. It is all those things! One handed open/close. Few pieces that are below the cover level so it doesn't interfere too much with what you have in the bed. Install was ok - definitely two people are easier than one.
Two downsides. The roll up area does take bed space - more than I'd like. Also, it is not watertight. Not terrible in the rain, but a good downpour or car wash gets water in the bed.



by:

Quality product. Bought to protect and hide fifth wheel hitch. Does a great job!



by:

This was a really easy installation. 2026 GMC 3500 DRW. I did it the install myself pretty quickly (except for lifting the combined rail/cover into the truck). One person on each side to guide and lift while my daughter lifted the weight in the middle of the bed worked well. The few connection screws required fit easily. Seals at the front of the truck and on the tailgate are smooth and complete. I didn't make both sides parallel when first installed. I loosened the middle and tailgate ends of the rails, adjusted the spacing distances, and it's perfectly in align now. One person can very easily expand and contract the top. The two drain hoses won't fit the holes in the truck bed. I'll pickup something from Home Depot or Lowes to append a reducing method. I really like this bed cover!



by:

Should put actual installation instructions with the product inadition with the on line.Something was catching when attempting to operate. Semes to work ok after it broke free.



by:

The shipment was supposed to be delivered yesterday, so I stayed home from work to receive it. I live on a busy street in St. Louis city, or a corner lot. The instructions were to deliver it around back to the garage door. It finally arrived after 9pm on the front steps, which are within 8 feet of the sidewalk. Good thing it's so heavy and it didn't "walk off".



by:

Received my order in a timely manner. It was an easy install. I’m 65 years old and was able to install by myself.



by:

The instructions were definitely lacking—ended up finding a decent YouTube video. The box itself wouldn’t fit between the rails on the inner sides of the bed (see pics), so I had to use prybars to seat it past the rails.

Functionality: seems very solid once installed and rollers help it slide easily either direction. I’m not convinced it’ll hold much water out, but that’s partly due to the ram box hinges next to the tonneau rails, then not a lot of pressure between the tonneau and the top edge of the tailgate. I also had a $500 tonneau in the past with weather stripping along the front box to scrape debris from the top side of the tonneau as it retracts into the box at the front of the bed. This doesn’t have that, so it seems debris will accumulate inside the box and I’m not sure how easily it will be to clean inside the box.

Time will tell if this is worth the price tag, but it does feel very sturdy once installed.



by:

I was hesitant to try a canister type roll up bed cover after only having hard covers or a soft roll up above bed cover before. I'm glad I did...

It still gets 5 stars because even though the box for the rails was damaged, no parts were missing and there were no dents or scratches on any of the pieces.

The install was easy, did it by myself in a couple of hours not rushing to get it done but working at a leisurely pace. The only time I needed help was to position it in place after the side rails were attached. The part that took the longest was measuring and adjusting the width between rails from the front to the back to get them within spec so the cover moves smoothly and easily with no binding. The instructions were easy to follow and it is simple to put together and install. Just take your time measuring between the rails and it will glide effortlessly.

I like the size of the canister, it doesn't take up much space at the front of the bed, even though it has 8ft to roll up. It seems as if it will be pretty water repellent with the rubber seals and gaskets. It rolls up easily and doesn't retract fast and slam into the canister. It also rolls out easily all the way to the tailgate. Unlike previous covers I have had, this one doesn't require the tailgate to be closed to work properly. The cover can be extended all the way to the tailgate and you can open and close the cover or tailgate independently of one another. I also chose this particular cover because it had the anywhere lock feature rather than only a few set locking points. The matte aluminum is a nice clean look, and it seems like it will be less prone to sagging in the middle as time goes by. This particular model sits just a little above the bed (the bed cover rails sit on top of the truck bed) but the canister isn't any higher than the rails or the cover itself when its open or closed. It looks seamless and clean.

It's only been a few days since install but as of now, I couldn't be happier having chosen this bed cover. And as always, etrailer makes the ordering process easy and worry free with their vehicle specific fit, fast shipping and fair prices.


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See what our Experts say about this Retrax Tonneau Cover


Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Wilson B
Updated by:
Wilson B
Employee Mark S
Written by:
Mark S

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