A rachet includes a round gear or a linear rack with the teeth, and a pivoting, spring-loaded finger referred to as a pawl that engages 
one’s teeth. The teeth will be uniform but asymmetrical, with each tooth having a modest slope on one edge and a much steeper slope on the various other edge.
When one’s teeth are relocating the unrestricted (i.electronic. forward) path, the pawl quickly slides up and over the carefully sloped edges of one’s teeth, with a springtime forcing it (generally with an audible ‘just click’) in to the depression between your teeth as it passes the hint of each tooth. When the teeth move in the opposite (backward) direction, on the other hand, the pawl will capture against the steeply sloped Ratchets Wheel border of the initially tooth it encounters, therefore locking it against the tooth and protecting against any further motion for the reason that direction.
Backlash
Because the ratchet can only just stop backward motion at discrete tips (i.electronic., at tooth boundaries), a ratchet does allow a limited amount of backward action. This backward motion-which is bound to a maximum range add up to the spacing between the teeth-is called backlash. In cases where backlash should be minimized, a smooth, toothless ratchet with a high friction surface such as rubber may also be employed. The pawl bears against the surface at an angle in order that any backward action may cause the pawl to jam against the surface and thus prevent any further backward motion. Since the backward travel range is mainly a function of the compressibility of the substantial friction surface, this system can cause significantly reduced backlash.
This Ever-power 54t Ratchet kit works as a direct replacement and is super easy to install. Just remove the freehub physique the parts you find here will maintain there, grease up the brand new parts and re-assemble the hub. Boom! You’ve simply considerably increased the engagement items on your hub. To give you a better notion of how this improves your ride think about the engagements in degrees of a circle, with the 18t you’ve got to maneuver the cassette 20 degrees to attain another engagement and with the 54t that knocks it down to 6.66 degrees! That’s less than a 3rd the distance it needs to move to hit the next tooth! You may well be wondering when you can really start to see the difference. Simply pedal your bike around and keep carefully the bike moving by using small pedal strokes and back-pedaling. You’ll see there’s going to be lot’s of slop between engagements. Picture if that “slop” was cut down to a third! I’m sure imaginable that’s a huge upgrade. Therefore, if you weren’t already totally convinced on the 54t ratchet kit I hope this is the turning point to getting one!