The 40-year-old collected a 7.93 and 9.33 in the opening 10 minutes for impressive tube rides on his forehand, and his opponent could not hit back.
The 11-time world champion collected his first French victory in two decades at La Graviere after Reynolds was unable to successfully respond with his own barrels and aerial attempts.
“It has literally been 20 years,” Slater said. “I had my first win here 20 years ago and that’s pretty crazy.
“Obviously when you go out there you want to win the heat, but I would have been really stoked if Dane (Reynolds) pulled a 10 out of his hat at the end of the heat, it would have been pretty rad.”
“When you start working the numbers a little bit, I got that 500 pointer and a 13th, two bad results, already,” Slater said.
“Parko (Joel Parkinson) is sitting on a 9th and a 5th. If I couldn’t get past Parko today, it would have put a lot of pressure on me, but this has now put the pressure back on Mick (Fanning) because Parko, John John (Florence) and I did well here at this event.”
It was Slater’s third win of the 2012 season after titles in Fiji and Trestles, and it sees him vault up to second in the world rankings with three events remaining this year.
The next stop on the 2012 ASP World Championship Tour is at the Rip Curl Pro Portugal from October 10 – 21.
1 – Kelly Slater (USA) 17.26
2 – Dane Reynolds (USA) 14.00
1 - Dane Reynolds (USA) 15.70 def. John John Florence (HAW) 15.60
2 - Kelly Slater (USA) 12.27 def. Joel Parkinson (AUS) 10.93