HP Velotechnik Front Suspension Spring Each Color:Yellow Hard but larger bolt heads need

but larger bolt heads need to be turned down to 13mm and on smaller bolts or shafts a shim is needed to get up to 13mm

To be exact: An infinitely adjustable trike for all kids between 3'3" and 5'3" in height (1-1

Compatible with TRP HY/RD

The seat height is adjustable by 4 inches (100 mm)

The arms are about 12 inches tall and are centered over the front wheels

HP Velotechnik Front Suspension Spring Each Color:Yellow Hard but larger bolt heads needMake your trike's front suspension softer or harder, depending on your weight and load capacity. Front springs come in red (soft) or yellow (hard), and work in conjunction with the Anti roll Bar, which comes in white (soft) and grey (hard). Product Notes Front Suspension Springs sold individually. Buy two for one trike. Specifications Red (Soft) coil spring for front suspension struts: Up to 198 lbs Yellow (Hard) coil spring for front suspension