The longest and slimmest version in the racerocket series the topeak race rocket hpx pump is specifically designed for road bikes this elegant aluminium pump is designed with a narrow barrel and longer stroke that inflates up to 160psi with ease the extendible hose takes the stress off the valve stem while the small size fits easily in a pocket key features longest and slimmest version in the racerocket series designed for road bikes longer barrel moves more air per stroke smarthead thr