Many experience racer prefer TRF DAMPER, they said it is smoother than XRAY stock damper.
I'm too lazy, so I prefer XRAY adjustable damper. (actually, I cannot tell/feel the driving difference between TRF and XRAY damper)
Thank you C-hing. For a "beginner" who choose T3, setup system, TRF damper ... one must be very knowledgeable. If he choose TOPCAD wheel and tire, then there must be something special/good about it. This is what I'm interested in.