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MonoRail Single Bike Add-On

1 out of 5 stars
1 Review

Style & Size:


MonoRail Single Bike Add-On

Expand your 2-inch receiver MonoRail hitch rack from its stock 2-bike set-up to a three bike rack with the MonoRail Single Bike Add-On. The kit provides everything you need to add additional carrying capacity to your MonoRail. Each carrier offers 3-inch side to side adjustability creating optimal bike offset if needed.

The base 2-Bike MonoRail supports 120lbs in total with a 60lbs max per tray. With the 3-bike set-up afforded by this Single Bike Add-On, the max load is still 120lbs and it can hold wheels ranging from 20 to 29-inches and tires up to 5" wide. Quit bailing out of doing shuttles and driving to the trailhead by bolting up the Add-On to your existing 2-inch MonoRail.


  • Extend your MonoRail to 3 bike capacity with this add-on
  • Includes carrier and fittings to add to existing rack
  • Fits 20-29-inch wheels and tires up to 5-inches
  • Not compatible with 1.25-inch MonoRail racks
  • Item #RMO000U
Bike Capacity
Rocky Mounts MonoRail 2" receiver
Part Number
Recommended Use
Manufacturer Warranty

Overall Rating

1 based on 1 ratings

Review Summary

1 Stars - 1 reviews
2 Stars - 0 reviews
3 Stars - 0 reviews
4 Stars - 0 reviews
5 Stars - 0 reviews

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1 out of 5 stars

March 12, 2022


I've used it several times

I purchased this to go with my Monorail Solo Bike Rack. I love the Monorail, so I assumed this would be a great addition that would allow me to carry an additional bike. Same sturdy construction as the Monorail, but the attachment method from rack to rack is horrible. There is about six inches of metal that slides into the existing rack, then two bolts fasten it together. The problem is after 15 minutes of driving around with no bikes loaded, the bolts start to wiggle themselves loose, and I don't mean just a little loose. I was nervous loading my 20 lb gravel bike on it to get it 5 miles home from the bike shop. I contacted Backcountry and they were super helpful as always. They immediately ordered me a replacement unit and sent me a prepaid code for my current one. I'll update the post when I receive it and get it installed. Hopefully I just got a factory dud.

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Originally reviewed on Backcountry.com