I dont get why every servo needs an aluminum top case nowadays, for crawlers that often break servo cases due to the way servos mount sure .
A 1/8th car especially nitro imo its a stupid from an engineering perspective unless your designing something too both cost more and fail more often. lots of vibration + flex on a ridged mounted component the force has to go somewhere.
Full aluminum top cases and titanium servo gears are two things that pretty much ensure your servo will have a buttload of slop in short order.
how long do you think the ring and pinion would survive in a 1/8th with aluminum bulkheads? Exact same concept.
Machining the top case from carbon fiber would be just as dumb and twice as expensive to the consumer look for the manufactures to try that next for the guy that needs that extra .00001s a lap for his damn 17.5t 2wd buggy.