Sorry, I should have clarified. My bike is a 2000 KDX 200, and the person who had the bike originally put the WER damper on when it was brand new. So, the unit was over 5 years old and was right on the verge on needing to be re-built anyway. I had a crash and the bars hit the ground VERY hard. This was basically the nail in the coffin for the damper. It still worked but had very little damping force. A damper is essentially just like a shock and uses valves and fluid to dampen. Any damper will wear out over time and either need to be rebuilt or replaced. I think it is awesome that this unit lasted 5 years and then was only $75 to rebuild. The Scotts damper is awesome, don't get me wrong. My dad has one on his DRZ 400 and my brother just ordered one for his KTM 250 EXC. I have ridden the DRZ with the Scotts, and I honestly don't see it working much better than the WER. Tough to tell though since the DRZ is a totally different bike than my KDX. To me, the price difference doesn't justify the Scotts unit. Can the Scotts unit be rebuilt? I have heard from a lot of people that any unit will mess up if you have a bad crash with the bars involved. You will LOVE either unit. Any damper makes the bike SO much better and safer!