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The Allen Crossbar 900B-I is a lightweight, alloy steel adapter bar designed to enable secure transport of step-through, suspension, BMX, and women's style bicycles by adding a top tube. It fits bikes with 18" to 27" headset-to-seatpost spacing, features an internal spring for constant tension, plastic-coated hooks to protect finishes, supports up to 35 lbs, and comes with a lifetime warranty for peace of mind.










| Color | Black |
| Brand | Allen |
| Material | Alloy Steel |
| Item Weight | 500 Grams |
| Product Dimensions | 21.65"L x 7.09"W x 6.69"H |
| Mounting Type | Bicycle Mount |
| Load Capacity | 35 LB |
| Orientation | Rear |
| Manufacturer | Allen Sports |
| UPC | 765271900007 |
| Item Package Dimensions L x W x H | 19.73 x 3.52 x 3.5 inches |
| Package Weight | 1.12 Kilograms |
| Item Dimensions LxWxH | 21.65 x 7.09 x 6.69 inches |
| Brand Name | Allen |
| Warranty Description | If an Allen Rack fails to function properly due to a defect in workmanship or material over the lifetime of the original purchaser, simply return the product with your original receipt, and Allen will repair or replace the rack free of charge. This warranty does not cover damage or wear which occurs as a result of day to day use or general wear and tear |
| Model Name | 900B-I |
| Suggested Users | unisex-adult |
| Number of Items | 1 |
| Part Number | 900B |
| Model Year | 2012 |
| Style | Bicycle Cargo Rack |
| Included Components | Bicycle Adaptor Bar |
| Size | One Size |
| Sport Type | Cycling |
B**E
Easy to use Great product
Worked perfectly to put my cruiser bike on the car rack. Without it was a struggle. If you have a beach cruiser bike it’s worth the money. So easy to use too
T**E
Good quality unit
Works great when using a bike rack for girls bikes
M**W
Worked like a Charm!
Perfect accessory to carry a bike on a bike rack. Was stable and sturdy. Easy to install and easy to remove. No issues with capacity. Carried a 25lb bike with no issues.
E**S
Simple Fix for Carrying Step-Through or Cruiser Bikes — Works, But Feels Basic
Simple Fix for Carrying Step-Through or Cruiser Bikes — Works, But Feels Basic The Allen Sports Crossbar Adapter does exactly what it’s supposed to: it adds a temporary top tube to bikes that don’t have one — like step-through, women’s, or full-suspension frames — so they can mount securely on standard hanging-style bike racks. It attaches between the seat post and handlebar stem using spring-loaded hooks, which makes setup fast and tool-free. Once in place, it provides a stable connection for transport. The internal spring holds tension well, and the plastic-coated hooks prevent paint scratches. It fits most adult bikes comfortably, though the bar has a somewhat utilitarian feel — it’s more functional than refined. The spring mechanism can feel stiff at first, and smaller riders may need both hands to stretch it into place. Still, for the price, it’s hard to beat. It solves the fit problem perfectly for beach cruisers and step-through bikes, and it holds up fine for occasional use or road trips. Bottom line: A basic but reliable adapter that makes nontraditional frames rack-compatible. Not fancy, but practical and affordable.
J**N
Cheap solution
Got my bike from San Francisco to Sacramento. Very reliable.
S**N
As advertied
Very easy to use.
K**L
Great product
Works great. Made well.
J**R
Good product
It did the job Works great
Trustpilot
1 month ago
1 week ago