I dealt directly with Roadmaster for info on towing equipment (Toad) and later on the stabilizer. They are very helpful and knowledgeable. I ended up buying from Amazon, although it was still Roadmaster selling on Amazon. The prices were a little cheaper.
The stabilizers are year, and model specific but you can call them and get help, or plug your information into Amazon and it will tell you if it fits your vehicle.
2018 Jayco Greyhawk 29MVP
2019 Jeep Sahara Unlimited
2011 Cyclone 3010 Toy Hauler- Sold
2014 Chevy Silverado Duramax LML -Sold