Yeah Racing has manufactured the blue alloy hop up parts for Tamiya TT-01 chassis! RC Racer (Popular UK RC magazine), RC World (Popular Japan RC magazine) , RC Model (Popular Japan RC magazine) have written reviews on the kit!
"…The rotating mass of the standard kit drivetrain parts is quite high so it was interesting to compare with the conversion alloy parts. The alloy options were a tighter fit all roundand with less weight, there will besome improvement in efficiency as well as in addition to the ‘bling’ look!…All of the location points for axle pins and shafts are bushed and spacers make for a very close tolerance on the important areas. The C-clips retain them which is a big improvement over the standard self tapping pins which can pull out with repeated maintenance or repair." by RC Racer
Reviews from RC Racer – January 2013
Reviews from RC Racer – November 2012
Reviews from RC WORLD – November 2012
Reviews from RC MODEL – November 2012
Yeah Racing (#CK-TT01/E-BU) Conversion Kit (BU) Upgrade version for TT-01 / TT-01E is now on SALE! 50% off only! Limited time offer!