The Tilta HDA-T18-CMC Compact 50mm Mounting Clamp is a low-profile, quick-release clamp that securely attaches the Hydra Alien Pro Shock Absorbing Arm to the system’s 50 mm Speed Rail, keeping smaller gimbals (DJI RS 3 Mini, RS 4, Ronin-S/SC, etc.) tucked close to the vehicle for maximum stability and reduced leverage during high-speed car mounts.
The Tilta HDA-T18-CMC brings the full-size Hydra Alien Pro arm down to a compact offset while maintaining bombproof rigidity. The clamp grips the 50 mm (1.97″) Speed Rail with dual oversized locking knobs for zero slip even at 100+ mph, and the opposite side features Tilta’s tool-free quick-release receiver with red safety button for instant arm attachment/removal. CNC-machined aluminum in matte black keeps weight low and corrosion resistance high, making it the go-to choice when rigging compact cinema or mirrorless gimbals on doors, hoods, roll cages or picture cars where every centimeter of clearance matters.
Key Features
- Dedicated clamp for Hydra Alien Pro 50 mm Speed Rail
- Low-profile design for smaller gimbals (RS 3 Mini, RS 4, Ronin-S, etc.)
- Dual oversized locking knobs for rock-solid Speed Rail grip
- Quick-release receiver with red safety button for Shock Absorbing Arm
- Tool-free installation and arm swapping
- CNC aluminum construction, matte black finish
- 1 × Tilta Compact 50 mm Mounting Clamp
- (Speed Rail and Shock Absorbing Arm sold separately)
- Model: HDA-T18-CMC
- Compatibility: Hydra Alien Pro system + Hydra Alien Pro Shock Absorbing Arm (HDA-T18-SAA)
- Speed Rail Diameter: 50 mm (1.97″)
- Mount Type: Quick-release dovetail (arm side) + dual-knob clamp (rail side)
- Material: Anodized aluminum
- Color: Black
