From the back cover of the second printing:

"Rediscovered Star League technology gives the Inner Sphere a new edge on the battlefield! But new weapons require new tactics; now as never before, ingenuity counts more than tougher 'Mechs and bigger guns. Maximum Tech brings BattleTech players into this brave new world of warfare, where thinking on your feet can win the day.

Take your BattleTech games to the max with Maximum Tech, the ultimate expansion rulebook for BattleTech players. Maximum Tech is packed with dozens of new Level Three optional rules designed to expand and enhance game play, including new weapons and equipment for Inner Sphere and Clan forces; detailed rules for salvage, repair and customizing 'Mechs and vehicles; expanded rules for vehicles and infantry; double-blind rules; revised and expanded artiller rules; the Battle Value rating system for building balanced forces; and much more!"

Note: This expansion included material adapted from:

BattleTech: Tactical Handbook
BattleTech: Explorer Corps
MechWarrior Companion
Field Manual: Draconis Combine
Field Manual: Free Worlds League
BattleTech: The Periphery

Many of the rules from this expansion were made tournament leagl in BattleTech: Total Warfare.