Overview
Get a slop-free, race-grade steering connection on your Arrma 1/8 vehicle with the Hot Racing Direct Drive CNC Aluminum 25T Servo Arm. CNC-machined from aluminum and finished with a black anodized coating, this 25-tooth direct-drive horn delivers a permanent, vibration-resistant link between your steering servo and your steering linkages — exactly what you need to handle the massive torque and forces generated in big-scale Arrma vehicles.
Unlike a servo saver, the direct-drive design transmits 100% of your servo's output to the steering linkage with zero compliance — perfect for racers and bashers who want maximum steering precision and are running impact-tolerant servos like the Spektrum S904.
Key Features
- CNC-machined aluminum, black anodized finish
- Direct-drive design — no servo saver compliance
- 25-tooth spline (Spektrum S904 and compatible servos)
- Strong, rigid steering connection
- Replaces stock plastic servo horns
Performance Benefits
- Zero-slop, 100% direct steering response
- Maximum steering precision under high loads
- Eliminates the flex and stripping of plastic horns
- Long service life — outlasts plastic horns indefinitely
Usage Notes
Direct-drive horns transmit all servo torque directly to the steering linkages — recommended only for use with high-torque, impact-rated servos. Apply removable thread-locker to fasteners during installation. Verify your servo uses the 25T spline before installation.
Technical Specs
- Material: CNC-machined aluminum
- Finish: Black anodized
- Spline: 25 tooth
- Style: Direct drive (no servo saver)
What's Included
- One (1) CNC aluminum 25T direct-drive servo arm
- Mounting hardware
Fitment
- Arrma Felony BLX (ARA7617V2Tx)
- Arrma Infraction BLX (ARA109001, ARA7615 series)
- Arrma Limitless and other 1/7 / 1/8 platforms using 25T-spline servos (Spektrum S904 etc.)
Summary
For Arrma drivers who want race-grade steering precision and a bulletproof connection between servo and chassis, the Hot Racing Direct Drive CNC Aluminum 25T Servo Arm is the no-compromise upgrade. Bolt it on once and enjoy zero-slop steering for the life of the vehicle.
