Custom suspension for BROMPTON ● Standard weight up to 154.3 lbs (70 kg) ● Remove original parts and replace them. We use original parts. For UK BROMPTON only; 0.4 inch (10 mm) eyeglass wrench is required when replacing. Bottom layer prevention model; Urethane cushion is attached to the inside to prevent the bottom from sticking. We also loosen the resin fit so that the entire spring is stroked. For this reason, the resin may be easily removed before assembling the vehicle, but it is intentional and should not be confused with defects.