BDH S1 Sequential Shifter

Mechanical Inertia. Real Sequential Impact.

Dedicated sequential shifter engineered to replicate the true mechanical feel of a race-car dog-box gearbox. Built with BDH’s industry-first Dynamic Inertia Mechanism™, the S1 delivers authentic momentum transfer, resistance, and engagement physics for uncompromised sequential realism.

Key Features

• Dedicated sequential shifter inspired by real race-car dog-box gearboxes
• Industry-first Dynamic Inertia Mechanism™ for true momentum transfer
• Dual-stage engagement system with progressive resistance and crisp engagement
• CNC-machined aerospace-grade billet aluminium construction
• Mechanical, physics-driven feedback — no electronics or canned effects
• Designed for aggressive rally and race use
• Lifetime warranty against manufacturing defects

Sequential Shifting Technology

Unlike spring-based sequential shifters, the S1 uses a proprietary weighted inertia system. Internal ball bearings, compression springs, and dampers generate a genuine inertial pulse during each shift, recreating the energy transfer and kickback felt in real sequential selector mechanisms.

Dual-Stage Engagement System

Each shift delivers a deliberate two-stage feel:
• Initial resistance and preload
• Defined engagement point with physical feedback
• Natural return motion

This progressive mechanical response mirrors the operation of true motorsport sequential transmissions.

Build & Construction

• CNC-machined aerospace-grade billet aluminium
• Hard black anodised finish for long-term durability
• Internal weighted inertia assembly with damped motion control
• Designed for consistent performance under heavy use

Mounting & Compatibility

• Dedicated sequential operation only
• Designed for aluminium profile sim racing rigs
• Top-mount only (S1 specific)
• Uses BDH standard mounting plate system
• Compatible with major PC sim racing titles

Specifications

• Product Type: Sequential shifter
• Shifting Mode: Sequential only
• Mechanism: Dynamic Inertia Mechanism™
• Engagement System: Dual-stage mechanical
• Construction: CNC billet aluminium
• Warranty: Lifetime (manufacturing defects)

Notes

• Designed exclusively for sequential shifting (no H-pattern mode)
• Mechanical system — no software or telemetry required
• Built for drivers seeking maximum physical realism
• Lifetime warranty applies to mechanical components