After the leader leaves the drug shack, the man and woman prepare to leave. There is no helmet on the table next to the motorcycle. then the man picks up a helmet that wasn't there a second before. The couple share a motorcycle to escape. The man starts the bike moving as he holds his helmet beside the throttle, as they race out the exit he is wearing a helmet.
The goof items below may give away important plot points.
When the councilman's motorcycle falls off the cliff, it explodes violently upon hitting the ground. No vehicle would explode this suddenly and this spectacularly after hitting the ground, even if the fuel lines and/or gas tank ruptured.
When the escaping drug dealer lights a bush on fire, Sindy immediately gets off her motorcycle and begins throwing dirt on the bush to put out the fire. Why is the CHP so worried about wildfires starting from isolated brush when they do absolutely nothing about the massive explosions caused by the councilman's motorcycle or the PCP lab? Ponch is content to lecture the councilman while the motorcycle fire rages, and there's no indication that anyone called the fire department to put out the drug-lab fire.