Originally Posted by STLNLST

I run the Xray springs since they were easier to get compared to the Hara springs. I did back to back tests this weekend with the Hara springs (progressive) and the Xray (linear) and found that the car had better response and overall feel with the linear springs. The lap times also showed this to be true. The only way you're going to be able to get those springs will probably be thru rcmarket. Good luck.