I recently bought a used 2014 Honda NC750X with 6000 miles from a Honda dealer. The front end was harsh, skittish and like a pogo stick, the bike did not track well braking was jumpy. The front tire showed irregular wear, which is not uncommon. The rear tire was brand new with only a few hundred miles on it and it was starting to show uneven wear. Overall, the bike handle lousy and literally felt unsafe during cornering, braking and general riding. I bought and installed the Hyperpro spring set installing the Fork Springs first. I flushed and cycled the forks with other fresh fork oil several times to get out the old gunk. Using the included hyperpro 15 weight fork oil the bike was transformed into a normal acting predictable, enjoyable Motorcycle. Next, I replaced the rear shock spring and it feels like a new motorcycle overall being predictable and responsive and track straight and breaking was substantially increased and the sense of traction and overall safety is what I feel this Honda Motorcycle should have. Based on my experience, I made the right choice and it was the best investment and I would buy the spring set again under the same circumstances. If considering suspension spring improvements, these are worth looking at. Happy riding!