Retrospec Bike Rack Cross-Bar Adapter – Universal Top Tube Frame Mount for Car Racks – Adjustable 18-28in Bike Accessories for Step-Through & Suspension Frames – Tool-Free Installation, 45lb Capacity

Price: $20.99
(as of Sep 13, 2026 00:44:13 UTC – Details)


Our Retrospec Bike Rack Cross-Bar Top Tube Adjustable Adapter was engineered to give you the ability to mount bike frames with openings between 18”-28”, such as women’s step-thru frames, full-suspension, and other unconventional designs. A built-in internal spring creates the tension needed to keep your bike safe and secure during travel. The durable plastic coated hooks ensure the paint on your bike frame is protected from any scuffs and scratches. Whatever your cycling destination maybe be, the Retrospec Bike Rack Cross-Bar Top Tube Adjustable Adapter will be sure your bike arrives safe and ready to ride!
COMPATIBILITY: Transform any hitch bike rack into a powerhouse that fits it all – from step-through frames to full-suspension bikes. No more struggles mounting unique bike designs (Not intended for e-bikes)
QUICK & TOOL-FREE SETUP: Skip the hassle of complex installations. This crossbar adapter clicks into place in seconds, getting you and your bicycle accessories on the road faster than ever
FRAME-FRIENDLY DESIGN: Protective coating on every hook keeps your bike’s finish flawless. Whether you’re hauling road bikes or beach cruisers, your frame stays scratch-free mile after mile
ADJUSTABLE FIT MAGIC: Handles any bike with 18″-28″ stem-to-seat measurements. The built-in spring tension system locks your ride securely, ready for every car bike rack adventure ahead
TRAVEL-READY STRENGTH: Built tough to support bikes up to 45 pounds, this truck bike rack adapter keeps your wheels steady. Perfect for weekend warriors and daily riders alike
Customers find the bike rack adapter to be of good quality, sturdy, and easy to attach to bikes, taking just 30 seconds to put on and remove. The product is particularly suitable for step-through bikes and provides a secure fit, though some report it doesn’t hold bikes properly. Installation experiences are mixed – while some find it easy to install, others criticize the terrible assembly instructions. Durability is a concern as multiple customers report it breaking immediately, and opinions on value are divided between those who consider it a good purchase and those who find it a waste of money.