Ohlins S36PR1C1 Shock for the Honda Grom / MSX125.
With the Ohlins shock you get adjustable Compression Damping, Rebound Damping, and Spring Preload. The Shock is setup for your weight and intended use.
You get better traction, more support for your weight, better ground clearance, and better bump absorption. For street or racing use, you cannot go wrong with this one.