Nakagawa End Washer Rear Only Rear 7.8mm

Deflection prevention washer for wheel hub axle. Increases rigidity by tightening the entire circumference of the hub shaft with uniform pressure. One manufacturer's tests have shown that tightening a hub's quick release causes the hub axle to deflect by nearly 3 degrees. The main reason for this is that there are gaps at the end of the fork and frame, making it impossible to tighten the entire circumference of the hub axle with uniform pressure. The bending of the hub axle adversely affected the rotation of the hub. Therefore, this washer's protrusion fills in the gap and can tighten the entire circumference of the hub shaft with uniform pressure. (Patented) It's the same logic behind the high rigidity of thru axle hubs. In addition, the washer has been subjected to a surface treatment called QPQ processing, making it resistant to rust. This does not mean that it will not rust, so please perform regular maintenance. This washer is effective in preventing bending of the hub axle and improving hub rotation, but when you actually ride it, it feels like the rigidity of the front fork and frame has increased. This is noticeable on the front fork. There have even been cases where people who were skeptical tried it out and ended up buying several pairs without thinking. It is especially effective on soft fork ends.