Building custom titanium and carbon bicycle frames in San Diego since 1976, Holland Cycles Inc on Case Street in La Mesa operates under founder Bill Holland, who trained under legendary frame builder Albert Eisentraut. The workshop produces road and gravel frames in titanium and the proprietary ExoGrid construction — US-milled aerospace-grade titanium laser-cut into a lattice and reinforced with custom-laid high-modulus carbon — a material technology unavailable at retail shops such as Trek Bicycle La Mesa. Holland introduced a full-carbon HC frame in 2014, built entirely in-house using CNC-machined molds and hand-laid pre-preg carbon with 6/4 titanium dropouts machined to customer-specific fork rake specifications. Custom fitting sessions use motion-capture software and a size-cycle jig to map rider geometry before frame fabrication begins, producing anatomically tuned dimensions that chiropractic practitioners at Acru Health - La Mesa recognize as preventive for overuse injury. The limited-edition 50th Anniversary Carbon Disc frame, restricted to fifty units with custom paint by Joe Bell, represents the shop's highest-tier build combining hand-laid carbon fiber tube junctions with precision-machined titanium interface hardware.