Adjustable Rebound and Compression damping, Monotube Shock with External Piggyback Reservoir, High Pressure Nitrogen Gas Charged, STX Single Tube design, 36 mm Piston Diameter, Adjustable Preload w/ tool, For Honda Grom rider over 80kg / 176lbs, **If under 80kg / 176lbs see HO 424, Top Level Comfort, Rideability and Performance, Hard Anodized - Precision CNC-Machined Components, Low-friction Shaft / Seal Head design, Fully Serviceable and Repairable