Replacement outer shell for Monorim suspensions. Spring core not included What it is and why you need it - A protective outer shell that shields the spring area and keeps dirt out, helping restore ride feel after wear or damage - Easy to install and designed to preserve suspension performance and longevity Key benefits - Precise fit reduces unwanted movement and chattering - Durable construction helps resist impact and debris - Maintains smooth suspension action without full assembly replacement Size and compatibility - 150 mm outer housing: compatible with Xiaomi front suspensions; also compatible with Segway Ninebot G30 front and rear suspensions - 125 mm outer housing: compatible with Xiaomi rear suspensions; G30 rear suspension requires 150 mm Variant selection - Select the size that matches your model to ensure proper fit and function Use scenarios - Front suspension refresh: Xiaomi scooter with front suspension, replace worn outer shell to restore smooth front ride - Segway Ninebot G30 care: replace outer shell on G30 front suspension, and use 150 mm if you need rear as well - Rear suspension maintenance: Xiaomi rear suspension uses 125 mm; for G30 rear, use 150 mm for proper compatibility