Racers will use parts that are XC light, helps with the SNAP out of the gate…however they’re super smooth and hardly hang up so bending they’re bikes are less likely. (Plus get replacement parts free/cheap if sponsored) Decent riders use Reba forks or lowered revs but I’ve seen hang ups leading to bending forks at the steerer. Less a rider do well with an older Pike maybe 300-500g heavier but unlike to bend easily!!
SLX cranks are fairly common, zee rear mechs are ace given the sort cage, as for wheels something with a decent strength to weight, hope pro 2’s on flows or EN521’s etc.