Burley Design Flex Connector for Round Tow Arm — Black, controlled flex & safety strap

The Burley Design Flex Connector is a patent-pending tow-arm adapter that joins a round trailer tow arm to a Burley hitch while allowing the bike to fold or tip without upsetting the trailer.

Designed for long-term use, this connector inserts inside a round tow bar and secures to Burley hitches to add controlled flex between bike and trailer. Its engineered play provides up to six feet of torque tolerance so you can lay a bicycle down without dumping the trailer, and it ships with a safety strap and D-ring to meet attachment needs for most Burley forged and steel hitches.

How does the Flex Connector keep the trailer upright when I fold my bike?

The connector creates a flexible joint inside the tow arm that absorbs rotational force instead of transferring it to the hitch. That means when you tip or lay your bike over—during a roadside stop or bike repair—the trailer remains standing beside it.

• Built-in flex allows up to six feet of torque translation.
• Installs inside round tow bars to centralize the pivot point.
• Includes safety strap and D-ring to backup retention.

Which Burley hitches and tow arms is this model compatible with?

This specific Flex Connector is made for round tow arms and works with Burley Standard Forged and Steel Hitches as well as the Classic Hitch when installed with the appropriate hardware. The connector locks in place differently depending on the hitch: retaining pin for forged/steel hitches, bolt-and-nut for Classic Hitch.

• Designed for round tow-arm tubes only—check your tow bar profile before purchasing.
• Standard Forged and Steel Hitch: secures with retaining pin (included strap available).
• Classic Hitch: secures using bolt and nut (use the Classic Hitch hardware).

How easy is installation and what’s included in the box?

Installation is straightforward: insert the Flex Connector into the tow arm and lock it into the hitch with the correct fastener for your hitch model. The package includes a safety strap and D-ring, while required pins or bolts depend on the hitch variant being used.

• Insert connector into round tow arm, align with hitch, secure with retaining pin or bolt.
• Use the included safety strap and D-ring for added retention with Standard Forged or Steel Hitch.
• No special tools beyond common wrenches or a pin removal tool for quick setup.

Will the Flex Connector affect towing stability or handling?

The unit is engineered to add controlled articulation only where needed, reducing the chance of the trailer tipping when the bicycle moves independently of the trailer. It does not loosen the main hitch connection; rather, it isolates torque from bike lean and protects both bike and trailer alignment.

• Designed to allow limited torque translation without compromising the hitch’s core lock.
• Helps prevent trailer tip-over when a bike is laid down beside it.
• Durable construction intended for repeated use in everyday riding situations.

Who is this for: Cyclists who tow cargo or child trailers with Burley systems and use round tow arms, especially riders who need the freedom to tip or lay a bicycle down without unseating the trailer. It’s ideal for commuters, touring cyclists, and family riders who want a low-maintenance, reliable connector that increases everyday practicality while maintaining secure hitch attachment.