Bdh h2sq dual-mode shifter the bdh h2sq represents the next generation in mechanical simulation hardware. Built on over two years of testing and iteration, the h2sq improves upon our proven h1sq platform with a new dual-rail architecture, mechanical enhancements, and practical refinements developed through real-world racing experience. Key advantages: true dual-rail design: inspired by real gearboxes, our selector architecture enhances shift precision and alignment. Hex drive- new hex drive ensures the durability and centre positioning of the shifter runs true whilst mitigating play dual-mode operation: seamlessly switch between gated h-pattern and spring-loaded sequential modes. Independent shafts: dedicated shafts for each mode improve feedback and consistency. Mechanical mode collar: engages mechanical locks and remaps sensors for mode-specific input. Sensor logic: 9th sensor disables h-pattern logic and enables 9th 10th inputs in sequential mode for clean software compatibility. Usb-c upgrade: a robust, external port replaces internal pcb-mounted connections. Hand-tuned mechanism: each unit is calibrated for gate resistance and travel. Full metal construction: aircraft-grade aluminium and tensile steel ensure long-term durability. H-shift smoothness: dual-shaft alignment reduces play, offering a slicker, faster engagement. Sequential lockout: side-to-side shaft lock allows crisp up down shifting without gear path interference. Built to for commercial areas: ideal for ...