"...the AIBA Board of Directors has voted in favour of amending the weight classes for youth and elite boxers at all AIBA competitions," the world body said in a letter to the national federations which is in PTI's possession.
"The Men's weight categories will increase from ten (10) to thirteen (13), whilst the women's categories will move from 10 to 12. The new weight categories is in effect from August 1st, 2021," it stated.
Currently, the Olympic Games has men's boxing in eight weight divisions and the women's competition in five categories.
The eight men's Olympic categories are 52kg, 57kg, 63kg, 69kg, 75kg, 81kg, 91kg, +91kg, while the women's event is held in 51kg, 60kg, 64kg, 69kg and 75kg.
These weight divisions were notified in 2019 for the upcoming Tokyo Games and had the AIBA's approval before it was suspended by the International Olympic Committee (IOC) for administrative and financial irregularities.
At this point, the AIBA competitions do not have the 57kg division for men with 56kg rounded off as bantamweight followed by the lightweight 60kg category.
With the revamped divisions, the weight pool widens significantly in AIBA competitions and allows boxers greater flexibility in deciding their weight divisions.
AIBA President Umar Kremlev had spoken about increasing the number of weight divisions to ensure more boxers can enter the field in a recent press conference with global media.
"We believe this step will allow a greater pool of boxers to participate in the respective weight categories where they feel most strong and comfortable. This innovation will help boxing to develop from grassroots to elite," the AIBA stated.
"The changes have been made for the safety of boxers by ensuring easier weight management and a more level playing field," it added.
The spread between the first five categories in the men's competition has been kept at 3kg, between the fifth and seventh at 3.5kg, between the seventh and ninth it is 4kg, and between the 9th and 10th it stands at 5kg.
The difference of weight between the 10th and 12th category is 6kg.
"The super heavyweight category starts from 92kg and has no limits," the AIBA said.
The minimum weight for women remains the same at 48kg. However, the spread between the first four weight categories is now 2kg.
Between the fourth and eighth it is 3kg, between eight and ninth it is 4kg, from the ninth to the 10th it is 5kg, and from the 10th to the 11th it is 6kg.
"The heavyweight weight class remains the same at +81kg."
The AIBA is currently trying to regain affiliation from the IOC, which has taken over the conduct of the Tokyo Games' boxing competition.
The new weight categories:
Elite and Youth men boxers:
Minimum weight (48kg), Flyweight (51kg), Bantamweight (54kg), Featherweight (57kg), Lightweight (60kg), Light Welterweight (63.5kg), Welterweight (67kg), Light Middleweight (71kg), Middleweight (75kg), Light Heavyweight (80kg), Cruiserweight (86kg), Heavyweight (92kg), Super Heavyweight (92kg).
Elite and youth women boxers:
Minimum weight (48kg), Light Flyweight (50kg), Flyweight (52kg), Bantamweight (54kg), Featherweight (57kg), Lightweight (60kg), Light Welterweight (63kg), Welterweight (66kg), Light Middleweight (70kg), Middleweight (75kg), Light Heavyweight (81kg), Heavyweight (+81kg).