Box Two Large BMX Seat and Post Combo - 27.2mm Uni type - Black Presta Valve an ID of 20mm

an ID of 20mm

Minimalist

It works with  4-bolt

The logo on the tire may vary (some say "Sun" and some say "Kenda Komfort"

It comes with an 18t cog

Box Two Large BMX Seat and Post Combo - 27.2mm Uni type - Black Presta Valve an ID of 20mmThe Box Two Saddle is the alloy version of the popular race combo, featuring a proprietary co molded nylon shell and alloy seatpost. Lightweight and designed specifically for BMX racing, it features the Box logo molded into the top and has a reduced profile to prevent snagging on pants. Saddle Material: Co molded Nylon Shell Saddle Dimensions: 216mm x 114mm Seatpost Material: Alloy Seatpost Diameter (): 27. 2mm Seatpost Length: 135mm Posted Weight: