Base 40 is the foundational interface designed to house the Equilibrium system. It provides a secure, precision-machined seat that ensures Equilibrium functions exactly as intended within the Killer Golf platform.

Weighing 40 grams, Base 40 adds a subtle increase in mass while keeping the overall feel light. It is ideal for golfers who want access to dynamic balance calibration without significantly affecting tempo. Base 40 is included in the Equilibrium Kit and is also available separately for modular expansion or replacement.