Just broke my yz2 for the first time last club racing(rear shock tower) and I've been club racing once sometimes twice a week for the past 4 months. Solid car just can't avoid some hits. Stock up on shock towers and shock shafts. I've broken a shock shaft on my old yok awhile ago but that's it. Also ran my yz4 for the first time yesterday at the same track and I love it .