Mini & Moke Front Upper Suspension Arm Bump Stop – Hydrolastic Only (21A1598) This front upper suspension arm bump stop is designed for classic Mini and Moke models fitted with Hydrolastic suspension. It cushions the suspension at full travel, helping to protect the upper suspension arm and improve ride control. These bump stops are manufactured with a 1/4" fixing hole. Due to production tolerances in the original upper suspension arms, the mounting hole should be elongated vertically during installation to ensure the bump stop sits correctly on the arm. Features Front upper suspension arm bump stop Suits Hydrolastic suspension models only Helps prevent suspension damage at full compression Quality replacement for worn or damaged originals Manufactured with a 1/4" mounting hole Fits Classic Mini with Hydrolastic suspension Classic Mini Moke with Hydrolastic suspension Part Number 21A1598 Important: These bump stops are not suitable for rubber suspension Minis. During installation, the mounting hole should be elongated vertically to compensate for manufacturing tolerances in the original upper suspension arm. Looking for a competition upgrade? Performance bump stops are available as C-AJJ4007 (sold as a pair).