NEW Ergon CF Allroad Pro Seatpost - 27.2mm, Carbon, Setback height_6ft-01in X-Range gearing technology gives you

X-Range gearing technology gives you more range and a smoother gear progression

Cassette Cogs: 11-13-15-18-22-28-34-42-50

Front Wheel : Shimano TX505 9 x 100 mm QR hub

diameter:30

so the POP end cap acts as a reducer

NEW Ergon CF Allroad Pro Seatpost - 27.2mm, Carbon, Setback height_6ft-01in X-Range gearing technology gives youUnique comfort, lightweight and aesthetically modern: The CF Allroad Pro Seatpost features a leaf spring design that revolutionizes comfort on your road, all road and gravel bikes. Rough roads and gravel are smoothed out by the two carbon fiber VCLS leaf springs, while the saddle angle remains unchanged by the parallel displacement of the two leaf springs and the floating flip head. The precise and highly sensitive tuned leaf springs work so well that