Weight Classes

In modern day lucha libre, weight divisions are only loosely applied and not especially meaningful. Early in history, they were strictly adhered to, with box y lucha comissions denying promotions permission to run title matches if the participants didn't make weight.

Weight Divisions
Division	Spanish	Limit kg	pounds	Major Titles	Notes
Feather	Pluma	63	139	Mex Nat UWA
Light	Ligero	70	154	Mex Nat UWA WWA
Welter	Welter	78	172	Mex Nat NWA CMLL UWA WWA IWRG
Super Welter	Super Welter	82	181	IWRG
Middle	Medio	87	192	Mex Nat NWA CMLL UWA WWA IWRG
Junior Light Heavy (Super Middle)	Semicompleto Junior (Super Medio)	94	207	UWA WWA
Light Heavy	Semicompleto	97	214	Mex Nat NWA CMLL UWA WWA WWF
Cruiser (Junior Heavy)	Crucero (Completo Junior)	107	231	Mex Nat UWA	1
Heavy	Completo	97	214	Mex Nat CMLL UWA WWA IWRG	2

1. Between 97 kg.and 107 kg.for Cruiserweight in Mexico.
2. Heavyweight championships have a minimum weight, all others are maximum.

Titles which include Super in their name indicate a higher weight limit, in between the established normal titles. For example, the limit a CMLL World Super Lightweight Championship would be in the middle of lightweight and welterweight, perhaps at 74 kg.

Junior is the opposite, a lesser weight limit than standard for that division.

While not a weight limit, there was at one time a height limit, or dividing line, to determine wrestlers who were minis and those who were normal wrestlers. Wrestlers had to be over 5 ft /152 cm to wrestle for the general titles. Any shorter would wrestle in the mini division. Like all other the divisions, this is no longer strict, and there are many rudo minis who are actually a couple of inches over the five foot mark (the better to bully the smaller tecnico minis.)

Sources

Wrestling-titles.com

GOBIERNO DEL ESTADO DE MEXICO(Reglamento de Box y Lucha Libre Profesional en el Estado de Mexico)-CAPITURO XXVI DEL PESO DE LOS LUCHADORES