Topeak QR Beamrack MTX A-Type W/MTX Track System. Fits Small Size Frames. MFPN=05001040321 Clamp Type Post mount Primary

Clamp Type Post mount Primary Color Silver Seat Post Diameter 27

Fits all cranks with 9/16-20 tpi right- and left-hand threads – some kid’s bikes and vintage bikes may have smaller incompatible threads

Adjust the geometry of your bike by changing the head tube angle by 1º with the GeoShift Performance Angle Headset

Step up to race-ready skate performance

Measures and displays kilograms to

Topeak QR Beamrack MTX A-Type W/MTX Track System. Fits Small Size Frames. MFPN=05001040321 Clamp Type Post mount PrimaryTopeak Beam Seatpost Rack MTX Black A Type for Small Frames: Fits 25. 4 31. 8mm seatpost. The 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