Original kit on masses of mid-price bikes, a Firex crank isn't a bad upgrade option either. The forged 6000 series arms aren't overly flexible despite a slim profile, although the shiny black finish will scuff off on your shoes eventually.
The splined connection is secure enough but you need to be careful with the relatively soft installation bolts. The hard-anodized Truvativ chainrings have the edge on Shimano's cheaper rings in longevity terms, and there's nothing between them in terms of smooth, quiet shift performance.
The external bearings don't last quite as long as Shimano's in typical trail conditions, though, with the offside set normally giving up well before the driveside bearings. Frame facing helps, but it's still the Truvativ Achilles heel here, which cuts into value compared with LX.
