Hi I am Yulun Chang and Yes i am sponsored by Bikelab INc. and ride their latest XC FS design the Dirtlab Tutumaz XC so I am a bit biased!
But honestly until recently I was riding a "big name brand" carbon xc bike until Marvin convinced me to also ride for Dirtlabin XC races as he wanted to do a new XC frame design. Me, my coach Andy and Marvin spent many eveings during our Japan trip discussing and created the new Tutumaz XC FS.
The basis of the frame is a new longer slacker geometry adjusted to my body size and when I received the bike we immediately built it up and a week later I raced it for the first time in the Xterra Asian Pacific race in Taiwan and I managed to win the race. Never have I felt so relaxed riding an XC bike and even with me using the short travel version 100mm front and rear (110 rear 120 front is also possible) The frame is stiff yet comfortable and the kinematics and geometry give the bike a natural feeling and it is soo light when climbing and very stable and easy when descending.
for Asian people and taller western people the fact that beside the standard sizes you can also buy custom geo and sizing is amazing. The finish on the welding is very good and the laser logos applied are small not too much in your face but give the frame an exclusive touch.
Get yours and the waiting time of 60 days is very much worth it this bike will change your ride and make you smile all the way.
Best Regards,
Yulun Chang
@Yu_Lun66