Adjustable Crossbar Top Tube Frame Adapter: Black Ground control Helix Race e*spec Chainrings merge

Helix Race e*spec Chainrings merge cutting-edge design and performance

Deluxe Air Tune Kits for service and repair of RockShox suspension forks

T-slot attachments make adding gear mounts and accessories fast

You don’t have to work hard to spin it up to speed or fight your bike when things get chunky

Ideal for use 5 minutes before training or competition

Adjustable Crossbar Top Tube Frame Adapter: Black Ground control Helix Race e*spec Chainrings mergeThe Crossbar Substitute works as a top tube for easier rack mounting for use with hang on type car racks and unconventional frames. For use with "hang on" type car racks Quick release clamps allow for quick and easy adjustment Thick rubber coating protects bike's finish Weight limit is 50lbs Distance limit from seat post to stem: max: 32. 25", min: 23"