Originally Posted by
phq2
How is the yz4 out of the box? Is it competitive for 13.5 blinky class or upgrades a must ?
Definetly yes! I would put the rear roe rear belt and pulleys on as well as scraping the front clicker and removing the top front belt tensioner. Those minor changes will be perfa for 13.5. One can always add more options later if wanted.