Extended Rails

Expand the compatibility of your Dash FM child bike seat to fit a wider range of bikes. These Extended Rails offer additional clearance between the seat and bike frame, making them a great option for many bikes including those with smaller frames or larger tires. Pick up an extra set to adapt your Dash FM to fit each of your bikes or to replace the original Mounting Rails on the Dash FM | Extended Rails if lost or damaged.

Check out our Dash FM Compatibility Guide to find out which Dash child bike seat model is right for your bike. Then follow the step-by-step instructions in our Installation Guide to get your bike ready to ride with your favorite copilot.

• Easy installation on the Dash FM child bike seat
• Provides additional clearance for bikes with larger tires or smaller sized frames
• Quickly snaps into place in the Frame Mounting Block

• Extended Rails

NOT Included:
• Dash FM Bike Seat
• Frame Mounting Block

Compatible With:
• Dash FM 2020 – present
• Dash FM | Extended Rails 2020 – present

NOT Compatible With:
• Dash X FM 2020 – present


Burley.com Delivery Only with US and Canada


  • Includes Extended Rails
    Not Included Dash FM Bike Seat, Frame Mounting Block
    Weight 2.55 lb
    Dimensions (LxWxH) 20.5 x 4.5 x 10.25 in