A rachet consists of a round gear or a linear rack with the teeth, and a pivoting, spring-loaded finger named a pawl that engages one’s teeth. The teeth happen to be uniform but asymmetrical, with each tooth having a average slope using one edge and a much steeper slope on the other edge.
When one’s teeth are moving in the unrestricted (i.e. forward) direction, the pawl conveniently slides up and over the lightly sloped edges of the teeth, with a spring forcing it (typically with an audible ‘simply click’) in to the depression between the teeth since it passes the hint of every tooth. When the teeth move in the opposite (backward) direction, nevertheless, the pawl will get against the steeply sloped border of the first tooth it encounters, thereby locking it against the tooth and preventing any further motion for the reason that direction.
Backlash
Because the ratchet can only just stop backward action at discrete points (i.e., at tooth boundaries), a ratchet does allow a restricted amount of backward motion. This backward motion-which is limited to a maximum length equal to the spacing between the teeth-is called backlash. Where backlash must be minimized, a soft, toothless ratchet with a higher friction surface area such as rubber may also be utilized. The pawl bears against the surface at an angle to ensure that any backward 
motion will cause the pawl to jam against the surface and hence prevent any more backward motion. Because the backward travel range is generally a function of the compressibility of the large friction surface, this mechanism can cause significantly reduced backlash.
This Ever-power 54t Ratchet kit works as a direct replacement and is super simple to install. Just remove the freehub human body the parts you find here will be in there, grease up the brand new parts and re-assemble the hub. Boom! You’ve only considerably increased the engagement tips on your hub. To provide you with a better idea of how this enhances your ride think about the engagements in degrees of a circle, with the 18t you need to maneuver the cassette 20 degrees to reach another engagement and with the 54t that Ratchets Wheel knocks it down to 6.66 degrees! That’s less than a 3rd the length it needs to move to hit another tooth! You may well be wondering if you can really start to see the difference. Just pedal your motorcycle around and keep the bike moving by using little pedal strokes and back-pedaling. You’ll see there’s going to end up being lot’s of slop between engagements. Picture if that “slop” was cut down to a third! I’m sure imaginable that is clearly a huge upgrade. So, if you weren’t already totally convinced on the 54t ratchet package I hope it is the turning indicate getting one!
