SPD-SL automatic pedals for Shimano PD-R550 gray road bike

Pair of Shimano PD-R550 gray composite SPD-SL automatic pedals

Right and left footrests with new auto locks adaptable for road cycling, racing...

Technical characteristics and dimensions of the toe clips

• Brand: Shimano
• Model: PD-R550
• Materials: composite (reinforced plastic), steel and aluminum
• Colors: gray, black and white
• Weight: 310 grams
• Length of a pedal: 90 mm
• Width of a pedal: 87 mm
• Thread Type: 9/16" (14.29 mm x 1.27 mm)
• Right pedal thread: standard (screws in by turning clockwise)
• Left pedal thread: reversed (screws in by turning counter-clockwise)
• Comes with two plastic SM-SH11 cleats and screws for special shoes auto pedals
• Wide spring tension adjustment range
• Wider entry for easier engagement
• Super wide platform for maximum transmission efficiency force pedaling
• Stainless steel pedal body is stronger, decreases rotational axle flex and is more wear resistant
• Wider bearing spacing for better load distribution and more stability

In the world of cycling, there are only three possible threads for pedals:
- The 9/16" (14.29 mm x 1.27 mm) : This "English-pitch" thread is today's must-have. It is the universal thread for all adult and children's bicycles, pedals and cranksets of any brand.
- The 14 mm x 1.25 mm : The historic and typical threading of old French bikes but which is no longer used today.
- The 1/2" (12.7 mm x 1.27 mm) : This type of thread is not very widespread. We find it on one-piece cranksets on old bikes or children's bikes.

In any case, for these three types of threads, so as not to loosen while driving, the right pedal has a standard thread (from left to right) and the left pedal has a reversed thread (from right To the left).

Shimano is a Japanese brand founded in 1921, specializing in the manufacture of bicycle parts and components. It is also a world leader in bicycle equipment (derailleurs, pedals, wheels, cassettes, etc.). Shimano is a world-renowned brand, it equips a large part of the professional peloton and sponsors many cycling teams.