M540 SPD Mountain Pedal Vendor_Dumonde Tech Bead Socket Technology (BST) is

Bead Socket Technology (BST) is a patented rim shape that creates an advanced airtight system for tubeless bicycle rims and tires

Wheel truing ($20–$40 value each)

Bike-to-bike and bike-to-vehicle contact prevented by no-sway cages

The Shimano GRX FC-RX810 features optimum gearing for mixed terrain and riding styles

Spectral AL (M17) - 2014-2016

M540 SPD Mountain Pedal Vendor_Dumonde Tech Bead Socket Technology (BST) isThe Shimano M540L Mountain Pedals are an exemplary value with their open, mud shedding design, easy entry and release, plus durable construction. Drawing inspiration from Shimano's flagship XTR pedals, the M540L shares a similar sculpted shape and open design at a more affordable price point that maintains Shimano's renowned SPD reliability and performance. FEATURES: Open design works well in muddy conditions Aluminum body is lightweight and tough