Review on 🏎️ Autolite-AR3910X AR High Performance Racing Non-Resistor Spark Plug: 4-Pack for Optimal Engine Performance by Donald Larson

Look this is a great product for Jr 2 and up racing karts in combination with a clone or predator. I bought it for a Jr.1 kart and had to change the plug after every race and the kart would stall during hot and special races. I was told it was air due to limited air to run this plugin in Jr.1 class so I switched to Autolite 3922 and my problems went away. It's a good product, don't get me wrong, but it may not work well with limited disk cards. I gifted them to a friend as my son is a grade above us and they do a great job with them.