CST

Big Fat Tire (BFT) - 20 x 4.0, Clincher, Wire

The CST Big Fat Tire (BFT) is a high-volume 20 x 4.0 clincher tire built for riders who want confident cornering and dependable climbing traction from a fat bike setup. Its aggressive tread uses a meaty center section for drive and braking control, backed by pronounced side knobs that bite when the bike is leaned into tight turns or pushed through loose terrain.

• 20 x 4.0 Fat Tire Volume - Large air chamber supports stability and control on rough surfaces where a narrower tire can feel deflected
• Meaty Center Knobs - Delivers consistent straight-line traction for technical climbs and controlled braking
• Supportive Side Knobs - Improves corner hold by digging in when the rider commits to the edge of the tread
• Clincher Casing - Standard tube-type compatibility for straightforward installs and trail-side service
• Wire Bead - Secure bead retention and durability for everyday riding and hard use