another great benifit i've learned with the Scott's unit is versatility. I have 2 MX bikes, I initially bought a Scotts for my KX500, but recently also purchased a Sub mount bracket kit for my '07 YZ450F, and the Scotts damper unit works with both bikes, in 5 min. I can swap rthe unit from bike to bike, saving me $300 by not having to buy another damper unit.