Stay Strong Pivotal Warmdown Seatpost Extender 31.6mm-Black waist-size-adult-38 Allows you to use 5-Bolt

Allows you to use 5-Bolt chainrings

and (2) compression nuts

The Ultra SS Series is also built to work with all standard axles 10mm (3/8") - 20mm thru-bolt and fits Onyx's Ultra SS Cogs

The FLY Racing Kinetic Mesh race pant features comfortable mesh liner for ventilation

Barcode 143070 Special Shipping Group No decorateTable('product-attribute-specs-table')

Stay Strong Pivotal Warmdown Seatpost Extender 31.6mm-Black waist-size-adult-38 Allows you to use 5-BoltThe Stay Strong Pivotal Warmdown Seatpost Extender 31. 6mm makes it quick and easy to adjust your seat height after or even before a grueling race. This extender eliminates the need for an additional seat and seat post as your current seat and post fit conveniently into the top. Get the most out of your pre and post race rides with no fuss. Length: 500mm