買咗ARX540, 有問題想請教

砌咗部車,全原裝,想問問師兄們,有咩要必換的?
頭擔的杯士使唔使改BEARING?
轉向推杆唔識回中,嗰两條彈弓應要幾緊,有冇呎吋可提供???

It is best to change the front end's bushing to ball bearing.  And the stock steering shaft is plastic.  It is better to change it to steering shaft.  AR racing have this kit.  For the spring if you are running the stock flywheel the spring set it as loose as possible.  If you have to e-flywheel you can set it harder to increase the corner response.  

有冇PART NO. FOR STEERING SHAFT?
BALL BEARING 有冇SIZE?係唔係TOTAL 6粒?
仲有咩特別野要攪?
jf813師兄,請多多指教...謝

The steering shaft pn x-036 and it come with rubber shield ball bearings already.  I think the size is 5x10mm and you need 8 for one bike.  This bike not too much option is necessary as a lot of the parts are very strong already.  The only things I can think off is the steering shaft, e-gyro and maybe the wheelie bars.  

THANKS CHING

where to buy how much ???????

KWS 3XXX