Matrix IC3 Commercial Spin Bike I currently have 3 of these Commercial Spin Bikes The Matrix IC3 (formerly part of the ICG line) is a heavy-duty, commercial-grade indoor cycle designed for smooth, low-maintenance performance. Built for intense use, it features a 18 kg perimeter-weighted flywheel and a Poly V-belt drive for a quiet, road-like feel. Key Features & Specs Drive System: Maintenance-free Poly-V belt drive for a smooth, consistent ride. Flywheel: 18 kg (40 lbs) perimeter-weighted flywheel to maintain momentum and a balanced 360-degree pedal stroke. Q-Factor: Narrow 155 mm Q-Factor aligns the hips, knees, and feet for biomechanical efficiency and reduced injury risk. Pedals: Dual-sided SPD pedals with standard toe cages. Adjustability: 4-way micro-adjustable seat and multi-position handlebars. Frame: Solid steel frame protected by form-fitting wear plates (which double as calf-stretching pads) Max User Weight: 130 kg to 150 kg (depending on the exact regional model and certification).