Gravity Fsx 1.0 26-Inch Full Suspension Mountain Bike Frame

The Gravity FSX 1.0 is a full suspension mountain bike frame designed for riders who want to build up a custom 26-inch trail bike without breaking the bank. Its front triangle is constructed from custom-formed, TIG-welded 6061 aluminum with hydroformed tubes, paired with a CantiBeam link single-pivot rear suspension layout. The frame comes with a KS CoilOver rear shock featuring adjustable preload, allowing riders to tune the suspension feel to their weight and riding style right out of the box.

Practical touches like a replaceable rear derailleur hanger, included headset, and 31.8mm quick-release seatpost clamp reduce the number of additional parts needed for a complete build. The frame accepts only disc brakes and uses standard specifications throughout — 68mm English threaded bottom bracket, 1 1/8-inch head tube, 27.2mm seatpost, and 135mm rear dropout spacing — making it easy to source compatible components from most major brands. While the 26-inch wheel format and single-pivot suspension place this frame in the entry-level category, it offers a viable foundation for a recreational trail bike build at an accessible price point.