If you are just being introduced to the word “Cleats” allow us to explain that A bicycle cleat is a tiny, triangular wedge made of metal or plastic that is affixed to the bottom of a cyclist’s shoe. Cycling enthusiasts can clip their feet in and out of their pedals using a spring mechanism. The regular bike pedals are swapped out for smaller clip-less pedals to go with the cleats. The SH51 is compatible with all Shimano SPD pedals, making it a versatile option for a wide range of cycling disciplines.

Clean your cleats regularly using a soft brush or cloth to remove dirt and debris. Avoid using harsh chemicals that could damage the cleats. Shimano SPD cleats, a popular choice among mountain bikers and other cyclists seeking a secure shoe-to-pedal connection, are available in SH51 and SH56. Here’s a brief overview of each:It is recommended that riders try both types of cleats to determine which one works best for them. Additionally, it is important to ensure that the cleats are properly adjusted and tightened to prevent accidental disengagement and ensure a secure connection with the pedal. Conclusion Now, let’s take a closer look at how the Shimano SH51 and SH52 pedal cleats compare head-to-head: Durability and Longevity Both the SH51 and SH52 pedal cleats are made with durable materials that can withstand regular use and abuse. However, the SH52 pedal cleat has a more robust construction and is likely to last longer than the SH51 over time. Cleat Design and Compatibility Both the SH51 and SH52 pedal cleats have a similar design and are compatible with all Shimano SPD pedals.

Shimano SPD SH51 cleats provide a secure and reliable connection between the rider and the pedal. The two-bolt design allows for easy engagement and disengagement, making them a popular choice for mountain bikers and commuters. We're all learning here; the niceties of the different release between SM-SH55 and SM-SH56 cleats are lost on me, for I have never used the same pedals with both cleat types and with a fixed gear. [Most of my fixed gear SPD riding has been done with SM-SH51 cleats in M515 pedals.] That there is a difference of some kind isn't a massive surprise, since the cleat is chamfered differently; it is mostly the nose that is chamfered in SM-SH56, rather than both ends (but less) on SM-SH55. The main difference between SH51 and SH56 cleats is the release mechanism. SH51 cleats have a unidirectional release, meaning they release when the foot is rotated outwards. SH56 cleats have a multidirectional release, meaning they release when the foot is rotated in any direction.are all possible. FWIW I have discovered that under certain circumstances SPD release can be inhibited with cleat/pedal combinations that seem to work OK at first. To get a clean release you need a combination of three things Road cycling shoes are usually designed with three bolt holes in their soles to fit three-bolt cleats. These cleats are a lot larger than two-bolt cleats and usually made of plastic. The larger cleat gives a broader attachment point between the shoe and the pedal, adding stability and potentially greater power transfer. After you’ve pedaled with your new cleats, you might find you need to re-adjust them. With a good cleat position, you should feel that your knees are in line with your toes and that there’s no strain on your joints while you’re pedaling.