NEW Topeak Beam Seatpost Rack MTX Black A-Type for Small Frames: Fits 25.4-31.8mm seatpost type_derailleurs-rear double-sealed axles are robust and

double-sealed axles are robust and ensure total fluidity thru the pedalstroke

Strap slots help keep bag from moving side to side when installed

Ride bikes

Includes Flattop PowerLock

Cassette Cogs: 11-13-15-17-19-21-24-28

NEW Topeak Beam Seatpost Rack MTX Black A-Type for Small Frames: Fits 25.4-31.8mm seatpost type_derailleurs-rear double-sealed axles are robust andThe Topeak Beam Seatpost Mount Rack carries up to 20lbs and comes in three variations to cover different frame sizes. The quick release clamp allows for easy removal for weekend rides. Fits 25. 4 31. 8 mm seat posts Tough 6061 T6 aluminum construction Hinged seat post clamp with aluminum quick release lever Perfect for mountain and trekking bikes Carries 20 lbs and loads with ease