From Modern Bike:
Open binding mechanism and lighter weight are perfect for MTB or road cyclists. Features Open design pedal in economical price The open binding mechanism is designed to better shed mud Low maintenance sealed bearing cartridge axle
Specifications
SPD Cleat Surfaces: both surfaces Pop-up Floating Cage: No Spindle Thread: BC 9/16” x 20T.P.I. Spindle: chrome-moly Cartridge Spindle: Yes Cleat Retention Indicator: Yes Cleat Retention Adjuster: Yes Mud Shedding Design: Yes Pedal Body: aluminum/ barrel (silver) painted (black)Cage: No Reflector: SM-PD22 Average Weight: 380g (pair)Was this useful? Yes | No
From Bike Parts:
The Shimano M520 Pedal features a 9/16 spindle and is available in black. Color: Black Material (Spindle): Chromoly Float: 4 deg Pedal Type: Clipless Unit of Sale: Pair Weight: 415 g Intended Use: Mountain Material: Forged Pedal Spindle Thread: 9/16Was this useful? Yes | No
From Price Point:
Off-Road Sport Pedal Shimano M520 MTB SPD Pedals are an open design pedal at an economical price. The open binding mechanism is designed to better shed mud. Low maintenance sealed bearing cartridge axle. Product Specifications Thread: BC 9/16” x 20T.P.I. Was this useful? Yes | No
From Cambria Bike:
Based on XTR-M959 pedal design (replaces PD-M536 model).Dual-sided clipless engagement bindings. Adjustable cleat tension with indicator (Uses SH51-SR/SH55-MR cleats). Open design clears mud/debris for consistent clip-in action. Nylon-resin axle locknut with 15mm wrench flats for install/removal. CrMo spindle with a sealed, ball-bearing design. Painted black body with silver bindings. Was this useful? Yes | No
From Nashbar:
A very affordable, lightweight design with an easy step in cleat retention system. Adjustable spring tension top and bottom. Cro-Moly axle with sealed bearings. Black and silver. 376g. Was this useful? Yes | No
From EMS:
A mud-shedding SPD pedal built for the rigors of off road-riding. With SPD compatible shoes, you can harvest energy on the up-stroke for more power and control on the trail. - Aluminum body with steel retention springs and plates; chrome-moly spindle with sealed bearing cartridge
- Two-sided design for easy clip-in
- Adjustable clip release tension suits any preference
- Includes Shimano SPD cleats, washers, and bolts for SPD compatible shoes
- Low maintenance design for easy cleaning and reliable performance
- Follow all included instructions
- Practice releasing and clipping in before trail riding
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