Shimano Pair of SPD Wedges for Mountain/Cyclo Shoes

Product Information

This is the original SPD concept and so much more versatile that I’ll not say anything more about the several incompatibly different road-only designs that Shimano have experimented with, apart from noting that SM-SH71 is one (which can also be used with some early designs of original SPD pedals).

Installing the Shimano SPD cleat is a straightforward process requiring a few tools and attention to detail. Follow these basic steps for installation: Ultimately, the decision between the two comes down to personal preference and riding style. If you are looking for a more secure fit and do a lot of off-road riding, the SH51 cleats are a good choice. On the other hand, if you need to unclip frequently or do a lot of commuting or road riding, the SH56 cleats may be a better option. Proper maintenance is essential to ensure your Shimano SPD cleats’ optimal functionality and safety. Follow these tips to maintain your cleats: Consider the type of riding you will be primarily engaged in. For mountain bikers, SH51 cleats might be the better option due to their single-release direction, reducing the chances of accidental unclipping on rough terrains. Conversely, SH56 cleats with their multi-release function, are more suitable if you commute. They allow easier unclipping at traffic lights or intersections. Experience Level The SM-SH50 cleats may have disappeared at about the same time as PD-M515 was introduced; this was (I think) the first of a new generation of SPD pedals which (confusingly) used some of the same cleat part numbers (eg SM-SH51) but the parts themselves were different. Thus you can get cleats with the same part numbers which are actually different; thanks shimano!.. FWIW using old SM- SH51 cleats in newer pedals gives more float than in older ones. Using 'new' (made after ~1997) SM-SH51 cleats in older SPD pedals gives almost no float at all.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. It’s important to note that Shimano SPD cleats come in two different varieties, SH51 and SH56, which are not interchangeable. Ensure you have the correct pedal cleats before initiating the installation process. Maintenance We’ve got a lot more on how to install and adjust cycling cleats, but the key thing is to set them up loosely and see how it feels as a first step. However, understanding the differences between Shimano SPD SH51 and SH56 cleats is important for cyclists to make an informed choice based on their specific needs and preferences. In this comparison, we will explore the key features and characteristics of both cleats, highlighting their release mechanisms and helping riders determine which option is most suitable for their cycling style.

The Shimano SH51 and SH52 pedal cleats both have a 4-degree float, which provides a good balance of stability and freedom of movement for most riders. Weight

Which cleats should you choose?

A: Cleat lifespan varies depending on usage, terrain, and maintenance. As a general rule, consider replacing cleats every 1,500 to 3,000 miles (2,400 to 4,800 kilometers) or when you notice significant wear and tear. You’ll also need to change your pedals to your new clipless pedal system. On your first few rides, take an Allen key so you can adjust your cleat position if it doesn’t feel comfortable. The exception is PD-M858, a race-special MTB pedal introduced in 2000 along with its own special cleat (SH52) that nevertheless also fitted pre-existing pedals. This pedal was quietly dropped in 2002 in favour of a new MTB racing pedal (PD-M959) that works with the usual SH51 cleat but not SH52, which nevertheless remains in Shimano’s catalogue for the benefit of anyone who bought M858. So it’s simple: use any SPD pedal (except old M858) and either SH51 or SH56, depending on whether you want standard or easy release.

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 Some say cycling with cleats improves pedalling efficiency because clipless pedals encourage you to engage your foot through the whole pedal rotation, rather than just pushing on the pedals on the downstroke. The fact that SH56 cleats are included with Shimano’s Easy Release pedals gives a clue to their advantage. The main benefit of using the Shimano SH51 or SH52 pedal cleats is that they allow for a more natural and efficient pedaling motion, which can lead to improved power output and reduced fatigue over longer rides. Keep an eye on cleat wear in your shoes, particularly if you’re using plastic three-bolt road cleats. If the cleats wear down, they can feel loose in the pedal, so you won’t be getting the advantages of using them. Most cleats have wear markers and you can get cleat covers for easier walking too. 8. Keep it clean

What’s the difference between SH51 and SH56 cleats?

The cleats have a mud-shedding design that helps prevent dirt and debris from clogging the mechanism. This design also helps prolong the lifespan of the cleats. Performance and Use This makes perfect sense when you look at the cleat and pedal design; SM-SH51 cleats have 'shoulders' (or 'ears', alongside the cleat model markings) and the rest of the cleat is otherwise mostly flat-bottomed