The gear that comes with the kit is OK, but not as good as the Robart equivalent in my opinion. The nose gear side plates are prone to bending since their isn't a great deal of material above the trunion drive pin when in the extended position. I'm not sure on the material spec used, but I know the Robarts are made out of 7075, which has a sizable increase in strength over the far more common 6061 alternative. I do like the set screw end stops to adjust the end play out of the system, but I think a little more work could have gone into design for durability. The down side to the Robart is that the gear is slightly heavier and the nose strut will be shorter... A Robart 541RS ($78US retail) will be a direct swap out for the nose retract, only needing a slight adjustment in strut length to work.
Just make every landing right on the money and you shouldn't need to worry about that though!
Kelly