The 29-year-old lowered her personal world finest by 0.18 seconds on the Nationwide Stadium in Tokyo with compatriot Kare Adenegan in second.
Silver medallist Adenegan, who completed in a time of 17.03, made the stronger begin of the 2 earlier than her dominant team-mate surged clear to as soon as once more declare high spot on the rostrum.
Glory moved Cockroft a step nearer to a long-term goal of surpassing the 11 Paralympic medals Baroness Tanni Gray-Thompson received between 1992 and 2004.
She will shut that hole additional within the 800m ultimate on Saturday.
“I truthfully didn’t know that point was inside me,” mentioned Cockroft.
“I knew that Kare was going to maneuver out of the blocks, and I needed to go along with her as finest I might.
“She simply pulled a very good day out of me. It has been coming, it has all the time been there hiding, it has simply taken just a few years to indicate its face.”
Requested about probably topping the haul of Paralympic racing nice Gray-Thompson, she replied: “I’m midway and I’m three Video games in. I’m 29, guys! I don’t know if I can do one other three Video games.
“It’s there, it’s within the distance. This sport has modified a lot since Tanni. She left a legacy, we simply need to preserve bringing extra younger ladies into the game. If I’ve to maintain beating them, superior.”
Cockroft has established herself as one in every of her nation’s most recognisable Para athletes after bursting on to the scene with two golds at London 2012 after which including an extra three in Rio 4 years later.
Since coming back from Brazil, her profile has been raised additional as a presenter on BBC nature programme Countryfile along with an look on The Nice British Bake Off.
She just lately claimed cooking in entrance of superstar chef Paul Hollywood was extra daunting than competing on the Paralympics however there are not any indicators of complacency creeping into her day job.
The 12-time world champion lowered her personal world data within the 100m, 200m, 400m and 800m on the World Para Athletics Grand Prix in Switzerland in Could and resumed her spellbinding type within the Japanese capital.
She arrived as clear favorite as the one competitor to have dipped beneath 17 seconds this 12 months.
Adenegan seemed to be the largest risk to the crown and so it proved.
The 20-year-old from Coventry, competing within the adjoining lane, gave her fellow Briton a significant scare by flying out of the blocks earlier than in the end being overhauled as she settled for second spot and a season’s finest, which was nonetheless considerably slower than her lifetime document of 16.8, set in 2018.
“There was particular panic there,” mentioned Cockroft.
“The 100m, whenever you’re sitting on that begin line, appears so brief. She went, and I assumed, ‘I haven’t obtained sufficient time. I would like 120.’
“You simply must get your head down, get your arms transferring.
“I had no concept how these ladies have been pushing, we hadn’t raced collectively. I had raced Kare as soon as this 12 months. It was a shock throughout.”
Australian Robyn Lambird clinched bronze, greater than 1.6 seconds behind Adenegan, with one other GB athlete, Fabienne Andre, fifth in 19.14.