Here it is, the original flagship product of TinyWhoop.com, the Tiny Whoop Race Edition Motors! 
In 2015 the recipe that would later become the Tiny Whoop was severely by the available motors in China, the very few choices of props and most of all a teeny tiny JST1.25 battery connector. For the time leading up to when Benedikt Haak discovered and shared that the original TW pigtail was a major bottleneck in the power-system, this was the choice motor. This was the motor that flew off the shelves in huge quantity, and caused an event known as WHOOPOCALYPSE, when the entire community had no access to reasonable brushed motors due to the incredible explosion of popularity of Tiny Whoop. 

Here is the original description:

At 14,800kv these motors are perfectly smooth (no oscilations on the stock indy flight controller) and quick. I love 'em. I used them in tons of Tiny Whoop flicks, like this one.

6mm x 15mm brushed coreless motors for the Blade Inductrix and Nano QX. 55,000 RPM @ 3.7v

Upgraded motors are a must to carry the FX798T micro fpv combo.

To get the most out of these motors I recommend you break them in by hovering for 10 minutes of flight time. Then go nuts.