The rear are Alu they break more common often then the Front..i dont belive fore a sec that the front "Steel" shafts are real steel. propaby some low cost alloy...this race weekend we were 5 TM cars on the biggest sartingfield in Sweden in the MSEC 78 starting...3 in modified...1 of those racers did break one, the weekend before he broke 2..totaly of breaking for my clubmates must be over 12-16 CVDs..since the last 2 month the grip is awsome, they running 4.5 and 5 cells...no hiting, or crashing.just snapp off after some packs..

I dont think the 7075 is the key...the key is something like "spreingsteel" like the other brand uses..we do now rn Xrays T1 in the mod cars and they dont brake...