bing tracking image
  1. Trailer Hitch Lock
  2. Roadmaster
  3. Fits 2 Inch Hitch
  4. Standard Pin Lock
  5. Keyed Unique
  6. 4 Inch Span
Roadmaster Lock Set - Hitch Lock and 2 Quick-Disconnect Padlocks

Roadmaster Lock Set - Hitch Lock and 2 Quick-Disconnect Padlocks

Item # RM-304
lowest price pledge
Retail:$62.72
Our Price: $50.02
You Save: 20%
Trailer Hitch Lock
Orders above $99 qualify for Free Shipping
Shipping Weight: 1.87 lbs
Quantity: 
In Stock
RM-304 - Bent Pin Roadmaster Trailer Hitch Lock
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

In Use/Installed

Need help with installation?
Locate installers near me
Discourage theft and tampering and guard against accidental release of your Roadmaster towing system by replacing your quick-disconnect safety pins with steel padlocks. Included hitch lock provides extra security. Lowest Prices for the best trailer hitch lock from Roadmaster. Roadmaster Lock Set - Hitch Lock and 2 Quick-Disconnect Padlocks part number RM-304 can be ordered online at etrailer.com or call 800-298-1624 for expert service.
  • All Info
  • Reviews (24)
  • Q & A (0)
  • Videos (2)
  • Photos
  • Why etrailer?

Roadmaster Trailer Hitch Lock - RM-304

  • Fits 2 Inch Hitch
  • Standard Pin Lock
  • Keyed Unique
  • Roadmaster
  • 4 Inch Span
  • Steel
  • Bent Pin

Discourage theft and tampering and guard against accidental release of your Roadmaster towing system by replacing your quick-disconnect safety pins with steel padlocks. Included hitch lock provides extra security.


Features:

  • Quick-disconnect padlocks
    • Provide visible deterrent to theft and tampering
    • Lock for increased security
    • Guard against accidental release
    • Constructed with hardened steel shackle and solid brass tumbler
  • Trailer receiver hitch lock
    • Offers additional security for your towing system
    • Hardened steel pin and solid brass lock components
    • Designed for use with 2" x 2" hitches
  • Complete set includes 1 hitch lock, 2 keyed-alike padlocks and keys
    • Only padlocks are keyed alike; hitch lock requires separate key
  • Products made in the USA


Specs:

  • Hitch lock:
    • Pin diameter: 5/8"
    • Usable length: 4"
  • Limited Lifetime Warranty


304 Roadmaster Receiver Hitch Lock and 2-Pack of Quick-Disconnect Locks





Video of Roadmaster Lock Set - Hitch Lock and 2 Quick-Disconnect Padlocks

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




Video Transcript for Roadmaster Hitch Locks - Standard Pin Lock - RM-304 Review

Today we're going to be taking a look at the road master lock set. It's going to include your hitch lock, as well as two quick disconnect padlocks. The system is designed to lock your towing system to your vehicle at the base plates, using the padlocks, and locks the towing system in the hitch with the included hitch lock. Here, with the quick disconnect padlocks, these are going to provide visible deterrent to theft and tampering once they're installed. People are going to see these and they're not going to try and mess with your set up. They will lock for increased security.

They're also going to guard against accidental release. Really nice, solid construction. They're going to feature a hardened steel shackle, as well as a solid brass tumbler and steel body. If we take a measurement of the lock body real quick, going this direction, that's going to give us a measurement of about one and a half inches. The thickness is going to measure about three quarters of an inch, and then the height of the body measuring from this point here to this point here, that's going to give us a measurement of about one and thirteen sixteenths of an inch. The shackle diameter is going to give us a diameter of about a quarter of an inch.

These are very easy to use. Each padlock is going to come with a set of keys. They are keyed alike so one key will unlock either padlock. Place it in there, give it a little turn, that spring loaded design is going to pop that shackle out of the lock body. Place that around the locking area, so this will replace your quick disconnect pins.

Then simply just push back down the body until it engages. All four of these keys are going to be keyed alike, so they're exactly the same. That way it'll work on either padlock. Here, if the trailer hitch lock, this is going to feature a diameter of five eighths of an inch, it's going to have a usable pin length, from this point here to the curve is about four inches. Once installed, this is going to offer additional security for your towing system. It's going to be constructed with a hardened steel construction as well.

It's a nice solid seal. It's kind of got that chrome finish on it. It's going to last a long time. It's going to be resistant towards rusting, corrosion. This is designed for use with two inch by two inch hitches. Here at the lock body, it's going to feature an nice hardened steel construction with a brass tumbler inside. It's going to include that weather guard. It's going to come with two keys. These are keyed differently from the padlocks. Any of these four keys will open either padlock. Either of these two keys will unlock the lock from our pin. All you got to do is place the key in there, give it a turn, and it comes right off. Last thing I want to mention is that this is made in the USA, and the product is going to come with everything you see here on the table. You're going to get your two keyed alike padlocks, as well as the keys, and your hitch lock, as well as the keys for that. That's going to do it for today's review of the road master lock set.


Customer Reviews

Roadmaster Lock Set - Hitch Lock and 2 Quick-Disconnect Padlocks - RM-304

Average Customer Rating:  4.6 out of 5 stars   (24 Customer Reviews)

Discourage theft and tampering and guard against accidental release of your Roadmaster towing system by replacing your quick-disconnect safety pins with steel padlocks. Included hitch lock provides extra security.

- RM-304
by:

The wrong part was ordered from Road Master which I caught etrailer error and corrected the error. Plus etrailer shipped me everything except the part for the frame. I had to wait two months to get the part and could not drive the car as it was at the mechanic waiting for the part.



- RM-304
by:

My order arrived on time and was the best price I could find. Thank You


Comments
Still working fine. No issues
Glen - 02/25/2022


- RM-304
by:

Seem to be well made and easy to use. Wish each lock was keyed differently. Love etrailer!!



- RM-304
by:

Great product, works well!



- RM-304
by:

They were as expected, work as intended.



- RM-304
by:

Wish they were keyed the same, that may fault for not requesting that when I ordered.



- RM-304
by:

Some difficulty unlocking because it is behind wide flange. There isn’t a better solution that I’m aware of.



- RM-304
by:

Fit perfectly. Not many choices out there for the big receiver on a 2018 Super Duty and this is a good one. Not sure why they included the 2 padlocks though, I have no use for them.



- RM-304
by:

Great set of locks and the added protection securing my TOAD to the RV gives me great peace of mind while towing



- RM-304
by:

The lock set keeps the hitch and the tow bar from being stolen. These things work and haven't caused me any issues.



- RM-304
by:

Just received the locks. Look good but haven't used them yet. e-Trailer great to work with.



- RM-304
by:

We have it all hooked up. Everything fits properly. We are doing the electric on Saturday. Your videos are most helpful. I took a video on my phone, but I'm sorry that I do not know how to apply it to this review. George was most helpful.



- RM-304
by:

Always quality products and fast shippi ng.



- RM-304
by:

Outstanding service and great product



- RM-304
by:

I have been using it for over a year and it works great.



- RM-304
by:

Excellent service; shipped right way and arrived on time. A well built lock set, solid construction.



- RM-304
by:

The locks are excellent. I am towing my truck behind my RV and they will make it more secure.



- RM-304
by:



- RM-304
by:

good product good value, extremely fast shipping.



- RM-304
by:



- RM-304
by:



- RM-304
by:



- RM-304
by:

AAAAAAAAA++++++++++++++++



- RM-304
by:


24
24

Ask the Experts about this Roadmaster Trailer Hitch Lock



  • Troubleshooting Removing Toad from Tow Bar with Locks Installed
    The Roadmaster Lock Set - Hitch Lock and 2 Quick-Disconnect Padlocks # RM-304 does lock the easy disconnection points. You are correct that someone really determined to disconnect your vehicle will still be able to remove hardware and roll it away. If you are concerned about this, there are other things you can do to deter that theft. Obviously this is only an issue when you are stopped, so you can put your toad vehicle in park and even set the emergency brake making sure it is not easy...
    view full answer...
  • Lock Recommendation for Roadmaster Base Plate Kit
    Roadmaster uses a specific connection style for their locks, so for a lock set that would lock the base plates to the vehicle and the tow bar to the hitch of the tow vehicle you would want part # RM-304 or part # RM-302 for just the base plate locks. The lock kit part # BX88177 would only work with a Blue Ox system that uses their style of lug connection.
    view full answer...
  • Which Lock Kit is Recommended for Roadmaster Sterling Tow Bar
    The lock kit that is recommend for the Roadmaster Sterling Tow Bar part # RM-576 is actually the part # RM-304. This comes with a hitch pin lock and two pad locks. I attached a review video for more info as well.
    view full answer...
  • Recommended Locks for Roadmaster Nighthawk Towbar and Roadmaster Baseplate
    For Roadmaster base plates and tow bars you'll want to use the # RM-304, since the Blue Ox # BX88177 is only designed for Blue Ox base plates. This kit comes with locks for the base plates and a locking hitch pin so you can secure your Roadmaster Nighthawk # RM-676 to the RV.
    view full answer...
  • Recommended Hitch Lock For Roadmaster Falcon 2 Tow Bar # RM-520
    I have another option for you, but the etrailer Adjustable Trailer Coupler Latch Lock - 1/2" to 2-1/2" Span - 9/32" Diameter # e98883 you were looking at is for the coupler of a trailer and will not work with the Roadmaster Falcon 2 Tow Bar # RM-520 you mentioned. Instead I recommend the Roadmaster Lock Set - Hitch Lock and 2 Quick-Disconnect Padlocks # RM-304 which will work perfectly with the # RM-520 and the 2" receiver on your 2019 Freedom Elite. This kit also includes two pad locks...
    view full answer...
  • Recommended Keyed Alike Padlocks and Hitch Locks
    Roadmaster does not offer the Roadmaster Lock Set - Hitch Lock and 2 Quick-Disconnect Padlocks # RM-304 and the Roadmaster Quick Disconnect Padlocks (Qty 4) # RM-308 keyed alike. The only option we have for you to get all keyed alike padlocks and hitch locks is to use the BOLT system that keys to your vehicle ignition key. For instance if you have a Ford, you would use the # BL7018519 padlock and the # BL7018447 Hitch Lock.
    view full answer...
  • Hitch Pin Replacement For Roadmaster BlackHawk 2 Tow Bar
    If you are just seeking a hitch pin for the Roadmaster Blackhawk 2 tow bar, then you will simply use a standard 2 inch receiver hitch pin like # 37201074. If you want a locking hitch pin, then I recommend the Flint Hill Goods Padlock Style Hitch Receiver Lock # FHG63VR. You may want to consider the Roadmaster Lock Set - Hitch Lock and 2 Quick-Disconnect Padlocks # RM-304.
    view full answer...
    Image 1 for
  • Recommended Flat Towing System for 2016 Wrangler JK 2 Door
    I'm happy to help get you everything you need for your 2016 Jeep Wrangler JK to flat tow it. You have done your homework so my recommendations will be in line. I recommend the Roadmaster Crossbar-Style Base Plate Kit - Removable Arms # RM-521448-4 you suggested which will utilize the crossbar of the Roadmaster Sterling All Terrain Tow Bar # RM-576. This is a great combination with the tow bar also having the wiring cord and the safety cables integrated. Then you will use the Hopkins...
    view full answer...
    Image 1 for Image 2 for
  • Tow Bar, Base Plate, Wiring, Braking System to Flat Tow 2003 Subaru Impreza and 1998 Toyota 4Runner
    I spoke with my contact at Roadmaster and Base Plate Kit, # 916-1 is the correct base plate kit for your 2003 Subaru Impreza. The Base Plate Kit, # 1148-1, is the correct kit for your 1998 Toyota 4Runner. The RoadMaster Falcon 2 Tow Bar, # RM-520, that you mentioned is a good, economical choice with many great features like a quick disconnect system, telescoping arms for easy hookup, and a full length steel cross bar to help support your vehicle frame. As for a towing kit, I recommend...
    view full answer...
  • Recommended Parts to Flat Dinghy/Recreational Tow a 2018 Ford C-Max Hybrid
    The following parts that are mentioned on the answer page are actually great choices for your 2018 Ford C-Max: Base Plate Kit - # 524432-1 Falcon 2 Tow Bar - # RM-520 Safety Cables - # RM-643 Wiring Kit - # RM-15267 Blue Ox Patriot III Braking System - # BRK2019 The only thing that I would recommend differently is that if you plan on towing frequently to use the SMI Stay-IN-Play DUO # SM99251 instead. This is also a proportional system but it remains installed on your C-Max and is much...
    view full answer...
  • Parts Needed to Flat Tow a 2015-2019 Chevy Silverado or GMC Sierra 3500
    The parts to flat tow a 3rd generation 3500 GM pickup will actually be almost identical whether it is a Chevy Silverado or a GMC Sierra since they are essentially the same vehicle. To flat tow any vehicle you will need a base plate kit, tow bar, safety cables, vehicle tow bar wiring, a supplemental braking system, and possibly a high-low adapter. The base plate kit that I recommend for your application is the Roadmaster MS Base Plate Kit # RM-3180-2 as this fixed arm system adds a rugged...
    view full answer...
  • Will Carpod, Walled, Folding Cargo Carrier Fit on a 2013 Ford Escape Titanium With Tow Package
    Yes, the Carpod Walled, Folding Cargo Carrier # M2205-01-02 will fit your 2013 Ford Escape providing your trailer hitch has a 2 inch receiver. Personally, I would pick this one in a heartbeat if I still had kids at home and had to carry sporting equipment, backpacks or other odd shaped cargo. I also like the 5 inch shank rise, you can never have too much ground clearance. With that being said, the measurement from the center of the pin hole to where the shank begins to rise is 2-1/2 inches....
    view full answer...

Do you have a question about this Trailer Hitch Lock?




  • Why etrailer.com?

    At etrailer.com we guarantee:
  • Highest quality trailer hitch lock for the best price.

    Our Lowest Price Pledge ensures you will never overpay for the parts you need.
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate trailer hitch lock information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Employee Joshua S
Video by:
Joshua S
Employee Jacob T
Video Edited:
Jacob T
Employee Cole B
Installed by:
Cole B
Employee Andrew S
Installed by:
Andrew S
Employee Wilson B
Updated by:
Wilson B

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.