Dragon Ball: The Strongest Training

Because he is an Earthling, he is limited by his qualifications. In the original book, Klin's combat power was 1083 when he fought against Nappa and the highest was 1700 (full power), so there is no conflict in setting a 1500 combat power limit for Krillin. At this time, Leping's combat power is around 1,400, so the potential of Earthlings is limited.

Namek Chapter: His strength improved in the battle against Vegeta, and he practiced in the space ship and Gohan's spirit for a period of time. Around 1500 (detected by Saab's detector)

After the Great Elder developed his potential: 13,000 (official) the potential limit has been increased to about 100,000

Fighting Frieza: 75,000

The combat power of Tianjin Fan is 1823. After all, Tianjin Fan has the blood of the three-eyed people and is not a pure earthling.

With this assistant, Krillin can continue to break his own limits and eventually surpass Wukong.