Shimano PD-M8100 XT XC SPD Pedals are a high-end mountain bike pedal designed for cross-country (XC) riding. These pedals feature a wide, durable platform that provides stable support for your feet while riding, and a SPD (Shimano Pedaling Dynamics) mechanism that allows for easy clip-in and clip-out of your shoes.

The pedals also have an adjustable release tension, allowing you to customize the level of resistance required to release your shoes from the pedals. This can be particularly useful for riders who want to ensure a secure connection between their shoes and pedals while still being able to quickly and easily disengage when necessary.

In terms of weight, the Shimano PD-M8100 XT XC SPD Pedals are relatively lightweight, coming in at approximately 340 grams per pair. This makes them a good choice for riders who are looking to minimize weight on their bike without sacrificing durability or performance.