58 Pa. Code § 25.2 – Weight classes.

(a) The weight classes of professional kickboxers shall be as follows:
1. (1) Atomweight—112.9 pounds and under (51.3 kg and below).
2. (2) Flyweight—113 to 118 pounds (51.4—54.0 kg).
3. (3) Bantamweight—119 to 125.9 pounds (54.1—57.2 kg).
4. (4) Featherweight—126 to 132.9 pounds (57.3—60.4 kg).
5. (5) Lightweight—133 to 139.9 pounds (60.4—63.6 kg).
6. (6) Light Welterweight—140 to 147.9 pounds (63.6—67.2 kg).
7. (7) Welterweight—148 to 155.9 pounds (67.3—70.8 kg).
8. (8) Light Middleweight—156 to 163.9 pounds (70.9—74.5 kg).
9. (9) Middleweight—164 to 171.9 pounds (74.6—78.1 kg).
10. (10) Light Heavyweight—172 to 179.9 pounds (78.2—81.5 kg).
11. (11) Heavyweight—180 to 194.9 pounds (81.5—88.3 kg).
12. (12) Super Heavyweight—Over 195 pounds (Over 88.3 kg).
(b) Unless otherwise approved by the Commission after consideration for the health, safety and comparative skill of the boxers, only boxers who are in the same weight class set forth in subsection (a) may participate in a contest or exhibition.