AVAILABLE IN 3/4 WEEKS Seatposts WR COMPOSITI - RS 4mm setback lightweight carbon seatpost with an aluminum alloy head... WRCSEA0090015 €224.00 The WR Compositi RS seatpost is a stiff, lightweight carbon seatpost with an aluminum alloy head suitable for both on and off road. Diameter: 29.4/30/30.9/31.0/31.6/32.4/34.9mmLength: 280 / 340 / 400mmSetback: 4mmWeight: from 185g Add to cart