Originally Posted by Corse-R

And found many things have changed from the MTX-3 to the 4... Ones for good and others for bad.

Rear bulkheads on the 3 were their weak point (how many got a DNF after a rough take-off and the two nipples where the rear shock tower was attached went berserk). Now are much massive.

Brake rotor is almost a joke... Ditched (as I did with all the other Mugen cars I've assembled) and installed one, sorry, no digicam now but... you can see some pics of it there (posted by Manticore some time ago - sent it one rotor):

http://www.rctech.net/forum/attachme...chmentid=11853
http://www.rctech.net/forum/attachme...chmentid=11854
http://www.rctech.net/forum/attachme...chmentid=11855
http://www.rctech.net/forum/attachme...chmentid=11856
http://www.rctech.net/forum/attachme...chmentid=11857

This rotor came 3 years ago on my MTX-3 and on the MRX-3 and still work great on all two cars. Anything capable of stopping 2800grams of car without breaking a sweat, not warping and not collecting dirt on their surface is great. Will be installed on all mine '4' cars too.

Pics in few days, when camera returns from Tech service.

Put some blue brake pads (my kit come with the black and the blue ones - those last are for the MBX-5). Normally I've found the black ones too grippy and made the brake too delicate for being used. I'll need to test them.... anyone did it?

Car is very light (at least, mine seems to be). So not much lightweight parts seems to be needed. I'm planning to order only the Ti screws for the upper side (Front CVD's are installed - had a spare pair from my '3').