The ones that I am talking about (SP3's) are the Neuspeed edition Koni Yellow's, which are valved exactlly like regular Yellows. The only difference is that they have a shorter drop and 5 step levels of height adjustment instead of the 3 on regular yellows.
Someone once described them to me as "The neuspeed/koni yellows are designed for lowered vehicles. the shaft is about an inch and half shorter then a normal koni. so you will not have to worry about blowing out a shock using more aggressive springs."
http://www.neuspeed.com/products/pro...port&p_id=1819
I believe the SPSS3's are the race ones.