# RetraxPRO MX vs Roll-N-Lock M-Series (2026) > RetraxPRO MX vs Roll-N-Lock M-Series: canister size, bed space, keyed locks, load rating, warranty, rack options and verified prices for the same trucks. - Source: https://truckcoverguide.com/posts/retraxpro-mx-vs-roll-n-lock-m-series/ - Markdown version: https://truckcoverguide.com/posts/retraxpro-mx-vs-roll-n-lock-m-series.md - Last updated: 2026-11-12 --- - [Home](https://truckcoverguide.com/) - [Guides](https://truckcoverguide.com/guides/) - RetraxPRO MX vs Roll-N-Lock M-Series: Which Retractable Cover? Head-to-head # RetraxPRO MX vs Roll-N-Lock M-Series: Which Retractable Cover? Updated November 12, 2026 By [Truck Cover Guide Editorial Team](https://truckcoverguide.com/about/) [How we research](https://truckcoverguide.com/how-we-research/) Prices are approximate and change often, so check the current price before you buy. ## Key takeaways - Both are manual retractables with a key lock, no folding or strapping, and drain tubes from the canister. - The **RetraxPRO MX** has the better paper record: 500 lb rating (maker), limited lifetime warranty and more owner ratings. - The **Roll-N-Lock M-Series** has the smaller canister: 7-1/4 in deep (maker claim) vs roughly 13-1/2 in for the Retrax (per etrailer), so about 89% vs 80% of a 5.5 ft bed stays open. - Prices flip by truck: the Retrax was cheaper on the F-150 5.5 ft, the Roll-N-Lock cheaper on the Ram 5'7" and Tundra 5'7". - Retractables are rarely watertight; Car and Driver's tested retractable (a GatorTrax) leaked at the cab corners and canister without a drain. ## Our top picks - 1![RetraxPRO MX Retractable Tonneau Cover](https://truckcoverguide.com/_astro/retraxpro-mx.CQ7vuEa8_Z1anuev.webp)Best all-round retractable: 500 lb aluminum slats, keyed lock, lifetime warranty, about $1,917 for the F-150 5.5 ft[RetraxPRO MX Retractable Tonneau Cover](https://truckcoverguide.com/tonneau-covers/retraxpro-mx/)Retractable · Aluminum slats · 80% bed access · Keyed lock7.4**$$$$**Top-endPrice tier: Top-end[Check price on Amazon](https://www.amazon.com/dp/B08L46PC1S?tag=truckcoverguide.com-20) - 2![Roll-N-Lock M-Series Retractable Tonneau Cover](https://truckcoverguide.com/_astro/roll-n-lock-m-series.D0QHCItG_5cft.webp)Most bed space: 7-1/4 in canister and T-slot XT version, about $2,000 for the F-150 5.5 ft (XT)[Roll-N-Lock M-Series Retractable Tonneau Cover](https://truckcoverguide.com/tonneau-covers/roll-n-lock-m-series/)Retractable · Vinyl over aluminum · 89% bed access · Keyed lock7.3**$$$$**Top-endPrice tier: Top-end[Check price](https://www.amazon.com/dp/B09N9TRSM5?tag=truckcoverguide.com-20) ### On this page 11 sections - [The short answer](#the-short-answer) - [Spec by spec](#spec-by-spec) - [Prices for the same trucks](#prices-for-the-same-trucks) - [Canister size and bed space](#canister-size-and-bed-space) - [Opening and closing](#opening-and-closing) - [Security](#security) - [Weather sealing](#weather-sealing) - [Bed racks and T-slots](#bed-racks-and-t-slots) - [Warranty and owner record](#warranty-and-owner-record) - [Which should you buy?](#which-should-you-buy) - [FAQ](#faq) ## Before you choose - [The Best Retractable Tonneau Covers of 2026: RetraxPRO MX, RetraxONE MX and Roll-N-Lock Compared](https://truckcoverguide.com/posts/best-retractable-tonneau-covers/) - [The Most Secure Tonneau Covers of 2026: Keyed, Hard and Slash-Resistant Picks](https://truckcoverguide.com/posts/most-secure-tonneau-covers/) - [Tri-Fold vs Roll-Up vs Retractable Tonneau Covers: Access, Security and Price](https://truckcoverguide.com/posts/tri-fold-vs-roll-up-vs-retractable/) If you’ve settled on a retractable cover, the choice usually comes down to Retrax or Roll-N-Lock. Both slide into a canister at the cab, both lock with a key, and both cost close to $2,000 for a full-size half-ton. The [RetraxPRO MX](https://truckcoverguide.com/tonneau-covers/retraxpro-mx/) has aluminum slats, a published 500 lb rating and a lifetime warranty. The [Roll-N-Lock M-Series](https://truckcoverguide.com/tonneau-covers/roll-n-lock-m-series/) answers with a much smaller canister and, in its XT form, T-slot rails built in. We haven’t tested either cover ourselves. Specs come from the maker copy on Amazon and the retailer etrailer, prices are what Amazon showed on November 12, 2026, and the only hands-on retractable test we found (Car and Driver’s) covered a different brand, so we use it as evidence about the category, not about these two covers. ## The short answer Choose the RetraxPRO MX for the best-documented package: 500 lb aluminum slats, a key lock that holds at any position (maker claim), a limited lifetime warranty and more owner reviews. Choose the Roll-N-Lock M-Series if every inch of bed matters or you want T-slots for a rack without buying a separate rail system. On some trucks the Roll-N-Lock is also the cheaper one, so price your exact fitment. ## Spec by spec | | RetraxPRO MX | Roll-N-Lock M-Series | | --- | --- | --- | | Top | Powder-coated aluminum slats | Vinyl over an aluminum undercarriage | | Lock | Keyed, holds at any position (maker claim) | Keyed (listing shows key and tailgate locking) | | Canister depth | About 13-1/2 in (per etrailer) | 7-1/4 in (maker claim) | | Open bed on a 5.5 ft F-150 | About 54 in (80%) | About 60 in (89%) | | Load rating (maker) | 500 lb | Not published on the listings | | Weight (listing) | 90 lb | 95 lb (F-150 XT) | | Drainage | Drain tubes from the canister | Drain tubes from the canister | | Warranty | Limited lifetime (“Legendary Lifetime Guarantee”) | 3 years | | Rack options | T-slot (RTT-) and XR versions | M-Series XT with MaxTrak T-slot rails | | Our score | 7.4 / 10 | 7.3 / 10 | ## Prices for the same trucks | Truck and bed | RetraxPRO MX | Roll-N-Lock M-Series | | --- | --- | --- | | Ford F-150 2021+, 5’7” | $1,917.02 | $1,999.99 (XT) | | Ram 1500 2019+, 5’7” | $2,299.99 | $1,849.99 (XT) | | Toyota Tundra 2022+, 5’7” | $2,299.99 (deck rail version) | $1,799.99 (M-Series) or $1,999.99 (XT) | Amazon prices on November 12, 2026. The Retrax was about $83 cheaper on the F-150, while the Roll-N-Lock was about $450 cheaper on the Ram and $300–$500 cheaper on the Tundra. The plain (non-XT) M-Series F-150 5’7” listing we found had no buy-box price when we checked, so we’ve listed the XT. Check today’s prices: [RetraxPRO MX](https://www.amazon.com/dp/B08L46PC1S?tag=truckcoverguide.com-20), [Roll-N-Lock M-Series](https://www.amazon.com/dp/B09N9TRSM5?tag=truckcoverguide.com-20). ## Canister size and bed space This is the biggest practical difference. Every retractable needs a canister at the cab end to hold the slats when the cover is open, and that canister sits on the bed floor, so nothing can use that space. Roll-N-Lock says its M-Series canister is 7-1/4 in deep, which it calls the most compact of any retractable. etrailer lists the RetraxPRO MX canister at 13-1/2 in deep by 12 in tall; a staff answer on the same page gives 11-5/8 in tall by 13-3/4 in. Either way, plan on roughly a foot for the Retrax. On the 67.1 in floor of a 2021+ F-150 5.5 ft box, that’s about 60 in of usable floor with the Roll-N-Lock and about 54 in with the Retrax. On a 6.5 ft or 8 ft bed the canister takes a smaller share, which is why retractables make more sense on longer beds. After eight months with a GatorTrax retractable (a different brand), Car and Driver’s tester called its “12-inch roller case at the bulkhead” “a bit inconvenient sometimes, but not enough to hate it.” What each cover type leaves usable on a 5.5 ft bed Side view, cab on the left, 67.1 in bed floor (the 2021+ F-150 5.5 ft box). Open bed Covered by the opened cover (low cargo still fits under) Floor taken by a canister Soft roll-up Includes our estimate 88% 4 ft 11 in open-top Hard roll-up Includes our estimate 79% 4 ft 5 in open-top Soft tri-fold, folded From maker/retailer figures 67% 3 ft 9 in open-top Hard tri-fold, folded From maker/retailer figures 67% 3 ft 9 in open-top Hard fold, stood up Includes our estimate 91% 5 ft 1 in open-top Retractable From maker/retailer figures 80% 4 ft 6 in open-top Hinged one-piece From maker/retailer figures Low cargo only close to drive Run your own bed length in the [bed access calculator](https://truckcoverguide.com/tools/bed-access-calculator/). Try your own bed length in the [bed access calculator](https://truckcoverguide.com/tools/bed-access-calculator/); its retractable row uses the Retrax-size canister, so a Roll-N-Lock leaves about 6 in more. ## Opening and closing Both are manual covers: you release the latch at the tailgate end and push the cover toward the cab, where it winds into the canister. Roll-N-Lock says the M-Series uses a torsion spring enclosed in a 3 in aluminum casing and a patented contoured hinge design for smooth, frictionless rotation. Retrax says its aluminum slats retract without trapping debris that would hinder them. Both are maker claims we couldn’t check against a test. In practice, the reason people pay for a retractable is that there’s nothing to fold, strap or lift off: you can open part of the bed for a bag of groceries, close it again and lock it in seconds. ## Security Both are keyed covers, which puts them at level 3 on our security scale: they stay locked even if the tailgate is open. Retrax says the PRO MX locks with the key at any position along the rails, so you can leave it partly open for a ladder and still lock it. The Roll-N-Lock listing describes key and tailgate locking. One caution from testing: Car and Driver’s tester couldn’t get the GatorTrax retractable to lock anywhere but fully open or fully closed, despite an “any position” claim. That’s a different cover, but it’s worth trying the partial-lock positions on yours soon after install. The Retrax’s aluminum slats are harder to cut than the Roll-N-Lock’s vinyl top, though the M-Series has an aluminum undercarriage beneath the vinyl. Our [most secure tonneau covers](https://truckcoverguide.com/posts/most-secure-tonneau-covers/) guide explains the security levels. Tonneau cover security, in three levels Our editorial grouping, based on materials and how each cover locks. Level 1: softSoft vinyl covers. They keep cargo out of sight and out of the weather, but a knife opens them. Only as good as your tailgate lock. Level 2: hard, tailgate-lockedHard panels that latch from inside and are secured by your locked tailgate. Stops casual theft; a crowbar on the tailgate is the weak point. Level 3: hard, keyedHard covers with their own keyed lock or locking slats (one-piece lids, retractables, aluminum-slat roll-ups). They stay locked even with the tailgate open. No cover stops a determined thief with power tools. A tailgate lock matters for every level below 3; see [tailgate locks](https://truckcoverguide.com/accessories/). ## Weather sealing Neither cover has an independent water test. Both rely on drain tubes from the canister, routed through the bed’s drain holes, and that routing matters: Car and Driver found water got into its GatorTrax retractable at the cab-side corners and from the canister, and noted that installing a drain hose meant drilling through the bed. An owner review on etrailer says the RetraxPRO MX isn’t watertight in heavy rain or a car wash. Plan on a bed mat and keep valuables in a sealed box; [are tonneau covers waterproof?](https://truckcoverguide.com/posts/are-tonneau-covers-waterproof/) explains why. ## Bed racks and T-slots If you want bars or a rooftop tent over the bed, the Roll-N-Lock M-Series XT has MaxTrak rails that, per the maker, accept most T-slot accessories from Yakima, Thule and Rhino-Rack. Retrax sells T-slot (RTT-) and XR rail versions of the PRO MX. With standard versions, a rack on its own rails, such as the [Thule Xsporter Pro Shift](https://www.amazon.com/dp/B085WRHFQH?tag=truckcoverguide.com-20) on [TracRac SR base rails](https://www.amazon.com/dp/B0899M9KJH?tag=truckcoverguide.com-20), is the usual route; Thule’s listing says it’s compatible with retractable covers and points to its fit guide. etrailer’s Q&A says the Yakima OverHaul HD isn’t compatible with the Retrax MX. More in [tonneau covers with a bed rack](https://truckcoverguide.com/posts/tonneau-cover-with-bed-rack/). ## Warranty and owner record Retrax backs the PRO MX with what it calls a Legendary Lifetime Guarantee (a limited lifetime warranty). Roll-N-Lock’s listings show 3 years. Owner feedback on Amazon is thin for both, thinner for Roll-N-Lock: the Retrax’s Ram 5’7” listing had 168 ratings averaging 4.4 and its F-150 listing 22 at 4.8, while the Roll-N-Lock F-150 XT listing had 3 ratings and its Ram 6’4” listing 6 averaging 3.2. ## Which should you buy? - **Most retractable buyers:** RetraxPRO MX, for the load rating, warranty and larger owner base. - **Short bed, every inch counts:** Roll-N-Lock M-Series, for the 7-1/4 in canister. - **Rack or rooftop tent planned:** Roll-N-Lock M-Series XT, or a Retrax T-slot version. - **Ram 1500 or Tundra owners:** compare prices carefully; the Roll-N-Lock was several hundred dollars cheaper when we checked. - **Want the Retrax lock for less:** the [RetraxONE MX](https://truckcoverguide.com/tonneau-covers/retraxone-mx/) uses polycarbonate slats rated for 200 lb and cost $1,549.99 for the F-150. Still deciding whether a retractable is right at all? Compare types in [tri-fold vs roll-up vs retractable](https://truckcoverguide.com/posts/tri-fold-vs-roll-up-vs-retractable/), or see every option in [best retractable tonneau covers](https://truckcoverguide.com/posts/best-retractable-tonneau-covers/). ## Don't guess. Calculate. - [📏 Bed Size Finder](https://truckcoverguide.com/tools/bed-size-finder/): what bed length your truck has - [🎯 Cover Matcher](https://truckcoverguide.com/tools/cover-matcher/): which cover type suits you - [📐 Bed Access Calculator](https://truckcoverguide.com/tools/bed-access-calculator/): usable bed with the cover open - [📊 Compare every cover](https://truckcoverguide.com/tonneau-covers/): sortable spec table ## Frequently asked questions ### Is Retrax or Roll-N-Lock better? For most buyers the RetraxPRO MX: it publishes a 500 lb load rating, has a limited lifetime warranty and has more owner ratings on Amazon. The Roll-N-Lock M-Series is the better pick if bed space matters most, since its 7-1/4 in canister is about half the depth of the Retrax's, or if you want the M-Series XT's built-in T-slot rails. ### How much bed space does a retractable canister take? Roll-N-Lock says its M-Series canister is 7-1/4 in deep, the most compact of any retractable. The retailer etrailer lists the RetraxPRO MX canister at 13-1/2 in deep by 12 in tall (a staff answer gives 11-5/8 in tall by 13-3/4 in). On a 67 in F-150 5.5 ft bed that leaves about 60 in vs 54 in open. ### Can you lock a retractable tonneau cover partly open? Retrax says the PRO MX locks with its key at any position along the rails, and Roll-N-Lock's M-Series is keyed too. Be aware that Car and Driver's tester couldn't get a different retractable, the GatorTrax, to lock anywhere but fully open or fully closed, despite the same claim. ### Do retractable tonneau covers leak? They can, especially without drains. Both of these covers route drain tubes from the canister through the bed's drain holes. Car and Driver found water got in at the cab-side corners and from the canister of the GatorTrax retractable it tested, and an etrailer owner review says the RetraxPRO MX isn't watertight in heavy rain. ### Which retractable works with a bed rack? The Roll-N-Lock M-Series XT has MaxTrak T-slot rails that, per the maker, take most T-slot accessories from Yakima, Thule and Rhino-Rack. Retrax sells T-slot (RTT-) and XR versions. Clamp-on racks such as the Thule Xsporter Pro Shift on TracRac rails list retractable covers as compatible; check the fit guide. ## Sources - [Amazon: RetraxPRO MX for the 2021–2026 F-150 5'7" bed (80378)](https://www.amazon.com/dp/B08L46PC1S?tag=truckcoverguide.com-20) · checked 2026-11-12 — $1,917.02; aluminum slats supporting up to 500 lb, keyed lock at any position, Legendary Lifetime Guarantee, 90 lb item weight. - [Amazon: Roll-N-Lock M-Series XT for the 2021 F-150 5'7" bed (131M-XT)](https://www.amazon.com/dp/B09N9TRSM5?tag=truckcoverguide.com-20) · checked 2026-11-12 — $1,999.99; canister 7-1/4 in deep, 'the most compact canister of any other retractable cover'; MaxTrak T-slot rails; 3-year warranty. - [etrailer: RetraxPRO MX (Super Duty 8 ft) specs, Q&A and reviews](https://www.etrailer.com/Tonneau-Cover/Retrax/RT80384.html) · checked 2026-11-12 — Canister listed at 13-1/2 in deep by 12 in tall; foam seals and drain tubes; an owner review says it isn't watertight in heavy rain or a car wash. - [Car and Driver: Best Pickup Truck Tonneau Covers of 2026, Tested](https://www.caranddriver.com/car-accessories/best-tonneau-covers-tested/) · checked 2026-11-12 — The GatorTrax retractable leaked at the cab corners and canister, its drain hose required drilling, and the tester could lock it only fully open or closed. - [WhitetailGarage: Roll-N-Lock vs Retrax Round 2 (YouTube)](https://www.youtube.com/watch?v=OTMTyw6LhpY) · checked 2026-11-12 — An owner's side-by-side video comparison of the two brands, uploaded December 29, 2024. ## Get new guides by e-mail One short e-mail when Truck Cover Guide publishes a new guide. No spam, no sharing your address, and you can unsubscribe in one click. E-mail address New posts only · Unsubscribe anytime · [Privacy](https://truckcoverguide.com/privacy/) Our #1 pick Best all-round retractable: 500 lb aluminum slats, keyed lock, lifetime warranty, about $1,917 for the F-150 5.5 ft ![RetraxPRO MX Retractable Tonneau Cover](https://truckcoverguide.com/_astro/retraxpro-mx.CQ7vuEa8_Z1iGXVd.webp) ### [RetraxPRO MX Retractable Tonneau Cover](https://truckcoverguide.com/tonneau-covers/retraxpro-mx/) 7.4 - Retractable - Aluminum slats - 80% bed access - High security Owners who want a keyed cover that locks at any position and never needs folding or strapping, and will give up a foot of bed for it. $$$$ Top-end Price tier: Top-end F-150 5.5 ft listing on Amazon [Check price on Amazon](https://www.amazon.com/dp/B08L46PC1S?tag=truckcoverguide.com-20)[Read the full review](https://truckcoverguide.com/tonneau-covers/retraxpro-mx/) [📏 Which bed do you have? Make, model, year and cab in; bed length out, from the maker's spec sheet.](https://truckcoverguide.com/tools/bed-size-finder/)[🎯 Roll-up, fold or retractable? Match a cover type to your security, access and budget in 30 seconds.](https://truckcoverguide.com/tools/cover-matcher/) ## Keep reading [Retractable ### The Best Retractable Tonneau Covers of 2026: RetraxPRO MX, RetraxONE MX and Roll-N-Lock Compared The best retractable tonneau covers of 2026: RetraxPRO MX, RetraxONE MX and Roll-N-Lock M-Series compared on canister size, load rating, locks and price. Updated Nov 12, 2026](https://truckcoverguide.com/posts/best-retractable-tonneau-covers/)[Security ### The Most Secure Tonneau Covers of 2026: Keyed, Hard and Slash-Resistant Picks The most secure, best locking tonneau covers of 2026: keyed retractables, one-piece lids and slash-resistant roll-ups, plus how our three security levels work. Updated Nov 12, 2026](https://truckcoverguide.com/posts/most-secure-tonneau-covers/)[Head-to-head ### Tri-Fold vs Roll-Up vs Retractable Tonneau Covers: Access, Security and Price Tri-fold vs roll-up vs retractable tonneau covers compared: how much bed each leaves usable, how each locks, weather sealing, install and the price ranges. Updated Nov 12, 2026](https://truckcoverguide.com/posts/tri-fold-vs-roll-up-vs-retractable/) Best all-round retractable: 500 lb aluminum slats, keyed lock, lifetime warranty, about $1,917 for the F-150 5.5 ft RetraxPRO MX $$$$ Top-end Price tier: Top-end [Check price](https://www.amazon.com/dp/B08L46PC1S?tag=truckcoverguide.com-20)