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  1. Mud Flaps
  2. Roadmaster
  3. 36 Inch Wide
  4. Universal Fit
  5. Rubber
  6. Rear Pair
RoadMaster RoadWing Removable, Expandable Mud Flap System for RVs, Buses and Dual-Tire Trucks

RoadMaster RoadWing Removable, Expandable Mud Flap System for RVs, Buses and Dual-Tire Trucks

Item # RM-4400-102
Our Price: $396.95
You Save: $92.18
Mud Flaps
Shipping Weight: 46 lbs
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Protect your towed vehicle from nicks and dings with the RoadWing mud flap system. Its anti-sail design keeps the flaps down where they belong, shielding your car from flying road debris as you tow it. Fastest Shipping and Great prices for RoadMaster RoadWing Removable, Expandable Mud Flap System for RVs, Buses and Dual-Tire Trucks. Read our customer reviews of Roadmaster mud flaps. Call 1-800-940-8924 for expert service or order your mud flaps part number RM-4400-102 by Roadmaster online at
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  • Reviews (43)
  • Q & A (0)
  • Videos (2)
  • Photos

Roadmaster Mud Flaps - RM-4400-102

  • 36 Inch Wide
  • Universal Fit
  • Roadmaster
  • Rubber
  • Rear Pair
  • Hitch Mount
  • No-Drill Install
  • Smooth Frame

Protect your towed vehicle from nicks and dings with the RoadWing mud flap system. Its anti-sail design keeps the flaps down where they belong, shielding your car from flying road debris as you tow it.


  • Mud flaps prevent your towing vehicle from kicking up too much debris
    • Protects your towed vehicle, trailer and other cars on the road
  • Anti-sail design helps flaps stay down to deflect more
  • Double-bolt attachment points keep the RoadWing in place and level
  • Grooved interior channels knock debris down and away from your vehicle
  • Easy installation - slide over ball mount or tow bar stinger and attach with bolts
  • Mud flaps can be trimmed to fit nearly any application
  • Made in the USA


  • Application: 2" x 2" trailer hitch receivers
  • RoadWing width: 91" - 102"
  • Flap dimensions: 36" wide x 24" tall

4400-102 RoadMaster RoadWing Removable Mud Flap System, Expandable

Video of RoadMaster RoadWing Removable, Expandable Mud Flap System for RVs, Buses and Dual-Tire Trucks

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for RoadMaster RoadWing Removable Expandable Mud Flap System Review

Today we're gonna be taking a look at and also showing you how to install the RoadMaster RoadWing Removal Mud Flap System. Available in several different sizes for different vehicle configurations. Where the RoadMaster RoadWing is gonna be a really good solution to help save whatever it is you're hauling, whether you've got an enclosed trailer. In this situation we've got an RV towing a car. On road you're gonna have debris on paved roads. You're gonna have debris to come up, rocks, little pieces of dirt, sand, stuff like that.

But, when you get off road, you're gonna see gravel coming up. You're gonna see dirt. Out in the mountains, trying to get over some of those passes, you're gonna have a lot of stuff that especially dual rear RVs or dual wheel trucks are gonna be kicking up.This is also gonna come in a size that's gonna work for your full sized trucks and SUVs and your mid-size trucks and SUVs. So, regardless of what you're hauling in those situations, you're gonna probably be hauling a trailer, whether it's an enclosed trailer. Maybe you've got a boat or motorcycle behind there.

Maybe you've got a race car on the trailer, and you just don't want stuff being kicked up on it. These are gonna provide a really good solution. Now, all of these are designed to fit around a two inch by two inch shank. So, whether that's gonna be on your ball mount. This is our tow bar for a flat tow setup.

Or, even if you wanna protect items in a cargo carrier. Maybe you don't want stuff bouncing up on that.This is gonna fit right around the shank. You've got two bolts. You've got one here, one located in the same place on the other side. These are gonna take up any of the space.

You can see even when I'm trying to move it, that's real nice and solid. We're not gonna have to worry about his leaning side to side.Now the mats themselves are gonna be 24 inches in total length. We've already trimmed these to work with our RV. You can see we've got them riding pretty good, about an inch over top of the ground. This is what our flap looks like. This is the part that we cut off of the one that we have here. See it's a nice, solid, durable material. It has some flexibility to it. But, it's not like the thin rubber flaps that we see often installed.They've grooved the back. So, you can see this side is smooth. It looks like this. But the back that faces towards our wheels, they've grooved that. Now the grooves run up and down on the back side of our mat. So, they're kind of be sitting like this, and as debris comes and hits them that's gonna help to slow it down and direct it down and under our mat rather than have it just hit it, bounce off, and potentially roll under the mat.On the rest of it, we're gonna have good sturdy, steel construction. It feels nice and thick. Each end is gonna be capped off. You don't have to worry about water or dirt getting in there and causing rust. They've coated that all with a black power coat finish.Now, to get the RoadWing installed, you'll see that we've got the area right here that we're gonna be passing this shank on our item. We're gonna be installing this on our motor helm of the tow bar. This center section, you're gonna see in the expandable version. If you're using either the middle or the smaller size, this is gonna be solid. Your arms are gonna already be attached.As we slide this on, you see our bolts here. We're gonna have those closer to our vehicle. Just put it on loosely for now. We'll get this put back into position and we can resecure it. Now, we're gonna bring our section right up towards the rear of our vehicle. You're gonna have a little bit of a space here. We don't want it to be too far back, because then we'll run the risk of items bouncing over the top. You can see we've got our two bolts here on the bottom. We're gonna tighten those bolts down evenly there.Then, using a 14 millimeter wrench or socket, we can snug those up. You can see, we've installed our mat to our adjustable arm here. We need to slide our arms into each side of the center section. On the non-expandables, you're just gonna attach your mat using those four bolts. Now, once we have those started, we're gonna be able to move these in and out. Basically, these are gonna go anywhere from 102 inches down to 91 inches.I think you're gonna be best suited to have the end even with, maybe just past your bumper just depending on how wide that item is behind you. If you're a narrower kind of item, maybe you don't need all the protection on the outside. So, maybe you bring those in a little bit to give you a little more protection on the inside. Once we get those set where we want them, it's time to come through and we'll tighter up those bolts here in the middle.Now, we're gonna get our RoadWing flaps cut to size. What you're gonna do is measure from the bottom of the bar down to the ground and subtract maybe an inch or an inch and a half. Something to keep in mind, since we're doing an RV with the flat tow setup, we're not gonna really have any sag. So, this rear bumper is gonna stay about where it's at. If you're using any of the other type vehicles or if you're gonna be hauling a trailer behind your RV, you need to allow for the slack.You hook your trailer up, generally the back of your vehicle comes down a little bit. So, you wanna account for the sag plus about an inch. Now, I've marked down the distance from the bottom of the bar to the ground. That mark's right here. Then I just put an inch and a half piece of tape on it to give me that inch and a half. We're gonna cut right along that line. You just need a sharp knife to do it.We'll do just a couple of shallow passes, and eventually we'll have worked through the mat. So, if I just kind of flex that flap back a little bit at the bottom, we'll just keep working through that little bit of flex to help it to expand, make it cut pretty easy. When we get done with this one, we'll go do the other side.That's gonna complete our look at the RoadMaster RoadWing Line of Removable Mud Flaps.

Customer Satisfaction Score:

Customer Reviews

RoadMaster RoadWing Removable, Expandable Mud Flap System for RVs, Buses and Dual-Tire Trucks - RM-4400-102

Average Customer Rating:  4.4 out of 5 stars   (43 Customer Reviews)

Protect your towed vehicle from nicks and dings with the RoadWing mud flap system. Its anti-sail design keeps the flaps down where they belong, shielding your car from flying road debris as you tow it.


Great product! Saved my F-150 toad from having to get new radiator and headlight after I had to drive over some debris on the highway.


The flap itself is excellent, having a receiver mounted one very convenient.
The issue I had was the single bolt used to snug up the entire setup. The previous units had two one one each side. To Roadmaster’s credit they were willing to accept my hitch mount and replaced with a two bolt version which solved the issue completely.


Okay there are only a couple small things that I have to grump about. First is that the mud flaps come rolled up and it is very hard to get them to lay flat now as you can see in the picture. Second there is no center flap included for total protection from debris flying from under the vehicle. Last thing is there should be a bar included for the bottom of the flaps to keep them laying flat all the time.

On the other really rocks!!! This is the first time that I have every used them and I will be using them again for sure. You are always being updated on the progress of your order. You order ships out right away and I had my order in a couple days. The price of this product from was the best on the net that I could find. Oh yeah, and the fact that I got this item with free shipping is a total plus to me. Again I would recommend this site to anyone because they are good.


We bought these mud flats to protect our small Fiat 500 which we tow behind a small 30 ft class A motorcoach. The Fiat rides low to the ground. Before installing the mud flaps the Fiat sustained damage to a front parking light when hit by some small animal road kill. It also picked up tar in a construction zone. We had to cut the bottom of the flaps to shorten them but was otherwise an easy installation. They do drag a little when we enter/exit a steep incline. They do the job. We have put on about 3000 miles since we installed them without damage to the car.



Another 6000+ miles without issues or damage to tow vehicle. Great product!


Very easy to install. Love the fact that there was no drilling into our Rv or car. Highly recommend!


This is a high quality product that installs very easy. Unfortunately, when I stood back and looked at it, I realized that it won't work well for my application. The rear wheels of my dually will still send debris and mud over the top of the mud flaps outside the rear bumper of the truck. I also find that because they extend beyond the width of the dually, they will interfere with the front of my 5th wheel when making a sharp turn or backing. I will have to add some additional mudflaps immediately behind, and outside of the dually tires in order to prevent the debris from being thrown over the mud flaps. The Road Master mud flaps would be the perfect solution behind a motorhome, but not that great for my truck and 5th wheel.


Great product. Almost covers the back of my moter home. Simple to install. Easy to remove when not towing my car.


The mud flaps seem well made and are solid once mounted to my RV. Installation was easy, but there are quite a few nuts to tighten, so I would recommend a power drill if you have one to make it faster. The most time consuming piece of the installation was trimming the flaps. I followed the advice shown in the installation video on the eTrailer site and it was relatively easy, although it did take around 10 minutes for each side to trim the length to fit.
Overall, these seem to be a well made product with an easy installation.
I can not comment on durability yet, since I have just installed them, but the rubber flaps seems very sturdy, and I would expect them to last a long time.


I bought and installed these mud flaps on my 2014 Forest River Georgetown XL motor home to help protect my 2015 Chevrolet Equinox that I tow. they have performed flawlessly for me from California to Florida and return. I highly recommend this product.




Very easy to install and looks great. I shimmed my receiver hitch to ensure it did not wobbel. Protects my fifth wheel from gravel and road debris.


One mudflap is in 3 pieces out of the b ox.


It fits my needs perfectly


The product did what I wanted it to do. It kept stones and debris from hitting the camper.
However, when you cut the flap to a height that is compatible to a good running height ( 4" above the road) the flap drags going in and out of parking lots. On one trip it drug so often the flap had a tear at the mounting bracket. I sent an email asking if I could purchase just the flap but I got no response. So I improvised and put another metal bracket joining both sections of the flap.


Great quality and fast delivery


Just want I wanted, I’m very happy.


First off, etrailer carries a lot of great products and the customer support is outstanding. The RM4400’s showed up quick and in great shape. I like the one piece frame design, which made for a quick install. The product seems to be very solid. These were purchased to be used when pulling my new boat. I keep the assembly stored out of the way and attached to hitch drop, then when I’m ready to hitch up the boat, these are on and ready to go in thirty seconds. The true test will be in a couple of weeks on a run to Alabama for the spring Crappie hunt. Thanks etrailer.


This RoadMaster RoadWing Removable Mud Flap (RM-400) is fantastic. The Mud and rocks that I used to get on my trailer are almost non existent now. I only wish I would have purchased it before the first trip with my trailer. I only took one trip to realize the extra mud flaps I put on My Ram 2500 were not enough protection against road debris. Great investment and product. Highly recommended.


Absolutly love this product. Very easy to install. Looks great on my truck. Has done a very good job protecting my fifth wheel from rock damage. Would highly reccommend this product.


Great product!


The rubber mud flaps were packaged rolled up with the metal bar mounting bracket inside the rolled up mud flaps.
The loosely packaged assembly allowed sliding around of the rolled up mud flaps along the metal bar mounting bracket which put black scuff marks on the "Roadwing" insignias.


I like the product .. but the package was partly open when I received it .. I took it out of box and was missing a couple of parts .. I called and talked to Marc and he helped out and parts are being sent.. we feel it was damaged from delivering company.. thanks for the quick action by your staff


Sure, works good and attached easy, just hock up fifth wheel or pull type to see suspension height which will be lower, Mark with a sharpy and cut with circular saw, keep flap few inches off road surface , don't let in drag, saves a lot of cleaning trailer fronts.


Great service and products.

Show More Reviews

See what our Experts say about this Roadmaster Mud Flaps

  • Will Roadmaster RoadWing Mudflap # RM-4400-102 Fit 2016 Winnebago Forza 36G
    Yes, as long as your 2016 Winnebago Forza 36G has a 2 inch hitch installed on it the RoadMaster RoadWing Mudflap # RM-4400-102 will fit and work great! It was intended for use on RVs just like yours as long as there's a hitch installed.
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  • Compatibility of the Roadmaster RoadWing Mud Flap on a 2014 32 Ft. Grayhawk RV
    If you have a 2 x 2 inch hitch installed on the back of your 2014 Grayhawk RV, then the Roadmaster RoadWing Mud Flaps, # RM-4400-102, will fit. The flaps measure 24 inches long x 36 inches wide. By measuring from the ground to the bottom of your hitch opening can give the clearance you will need to make sure the mud flaps will not drag on the ground. If the measurement is larger than 24 inches, then the flaps will not drag.
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  • Roadmaster Rear Mudflap Recommendation for 2000 Ford Super Duty Dually
    The correct Roadmaster Roadwing Mudflap System for a 2000 Ford Super Duty with dually rear wheels is the part # RM-4400-102 that is a confirmed fit. This setup includes wider flaps that will accommodate the wider rear axle wheel setup you have on your truck.
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  • Will the RoadMaster RoadWing # RM-4400-102 Fit the TorkLift SuperHitch # TLD1100 on a 2002 Ram
    You can use the RoadMaster RoadWing # RM-4400-102 with your TorkLift SuperHitch # TLD1100 on your 2002 Dodge Ram Pickup, but I am not sure if you will be able to utilize both receivers with the mudflaps installed. If you are only using one of the ball mounts then this is a great option for you as the mudflaps are 36" wide.
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  • Mud Flaps for 2013 Chevy Silverado 3500 Dually that are 96 Inches Across and Fit a 2 Inch Receiver
    The only Rock Tamers we have for your 2013 Chevrolet Silverado 3500 is # ERT00110 and they're for a 2-1/2 inch receiver tube. However, we do have other options for you. The Roadmaster RoadWing # RM-4400-102 mud flaps fit a 2 inch receiver and can be adjusted up to 102 inches across. These will require you to remove the brackets that are currently welded to the receiver.
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  • How to Use Roadmaster RoadWing on 2015 Chevy Silverado 3500 with 3 Inch Receiver
    As long as the ball mount that you're using is a 2" then you can use the Roadmaster RoadWing Removable, Expandable Mud Flap System for RVs, Buses and Dual-Tire Trucks # RM-4400-102 without any issues. These mudflaps do not connect directly to the receiver so you should be able to make this work on your 2015 Chevy Silverado 3500. If you don't have a 3" to 2" reducer sleeve you can use the Curt Hitch Receiver Reducer Sleeves - 3" to 2-1/2" or 2" # C45408. I've linked our entire selection...
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  • Recommended Mud Flaps for a 2016 Chevy Silverado 2500HD Towing Airstream Trailer
    According to Roadmaster the RoadWing Removable, Expandable Mud Flap System # RM-4400-102 requires at least 2" of space on the ball mount shank. Since this is the case and you have less than enough space I recommend installing custom mud flaps that install on your fender. The WeatherTech Mud Flaps # WT120035 are actually an excellent choice for your 2016 Chevy Silverado 2500HD because they install easily plus they stick outside the fender a bit as you can see in the attached installation...
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  • Preventing Rock Chips and Road Debris Damage when Flat Towing a Vehicle Behind an RV
    Hopkins Heavy-Duty ArcticGuard Snow and Ice Windshield Cover # HM17529 would provide some protection against rocks but it is not meant to be used while the vehicle is moving despite the fact that the RV would be blocking most of the wind. It would ultimately result in damage and/or loss of cover. I recommend taking a look at our selection of vehicle guards and related parts, see link. Or you might also consider some hitch mounted mud flaps such as # RM-4400-102.
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  • Does RoadMaster RoadWing Work With Blue Ox Ascent Tow Bar
    That's a good question, and yes the two are absolutely compatible and can be used together: - RoadMaster RoadWing Removable, Expandable Mud Flap System # RM-4400-102 - Blue Ox Ascent Tow Bar # BX4370 The stinger is indeed made of steel so you did assume correctly. I have added links below to video reviews of both products for you to check out if you'd like to take a look.
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  • Recommended Road Debris Protection For Flat Towed Vehicles
    The RoadMaster RoadWing Removable, Expandable Mud Flap System for RVs, Buses and Dual-Tire Trucks # RM-4400-102 you mentioned are a great option for keeping your vehicle safe behind your motorhome. Other option is the Blue Ox KarGard Towed Vehicle Protector # BX8870 that is a shield attached to your tow bar that keeps flying debris down to prevent chips in paint and windshield.
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  • Comparing the Roadmaster Tow Defender Screening and RoadMaster RoadWing Mud Flap System
    The Roadmaster Tow Defender Protective Screening part # RM-4700 and the RoadMaster RoadWing Mud Flap System part # RM-4400-102 are both excellent options for your 2016 Jeep Wrangler Unlimited assuming you have one of the Roadmaster Crossbar-Style Base Plate Kits like part # 1444-1 which wound have been needed for the Roadmaster Guardian Rock Guard part # RM-4000. When comparing the Tow Defender and RoadWing, the Tow Defender will offer more protection but it will also be a bit more work...
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  • Mud Flap Fitment and Recommendation for Flat Towing Behind a Motorhome with Recessed Bumper
    All of the RoadMaster RoadWing Removable Mud Flap kits, like part # RM-4400 and # RM-4400-102 you mentioned, have the same basic dimensions so if you have trouble fitting one you'll have trouble fitting the other. For these to fit properly you need at least 2" of shank on your tow bar. If you have that much spacing past your bumper then these will fit and clear your bumper just fine. An alternative solution that I recommend going with is the Rock Tamers # ERT00108. These use 24" mud flaps...
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  • Recommended Windshield Protection For 2006 Honda Accord Towed Behind Class A RV
    I have another option for you, but we do not have cover that goes on the windshield of your 2006 Honda Accord when it is being towed behind your Class A RV. Instead we have Roadmaster Tow Defender Protective Screening # RM-4750 which fits Blue Ox tow bars with Blue Ox brackets, Demco tow bars with Demco brackets, Roadmaster motorhome-mounted tow bars with direct connect base plate, and Roadmaster bumper mounted D-rings. This will attach to the 2" receiver on your RV and will deflect rocks...
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  • Mud Flaps Compatible with Trailer Hitch Receiver Mount on 2018 Winnebago 24J
    The RoadMaster RoadWing Removable, Expandable Mud Flap System for RVs, Buses and Dual-Tire Trucks # RM-4400-102 cannot be mounted underneath because of the flange on the mount. It will only allow the above receiver fit unless you were to directly weld it according to my tech contact at Roadmaster. The best option for what you are seeking is the Rock Tamers Heavy-Duty, Adjustable Mud Flap System for 2" Hitches - Matte Black # ERT00108 which has the adjustable height both vertically and...
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Info for this part was:

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