Overview
Dial in the perfect gear ratio with the Hot Racing 18T 0.5 Module Hardened Steel Pinion Gear. CNC-machined from hardened steel with a blackened finish for maximum durability, this 18-tooth pinion delivers reliable power transfer in any 0.5 mod drivetrain. The 1/8" (3.2mm) bore makes it compatible with a wide range of standard motor shafts found in 1/16, 1/18, and other compact RC platforms.
Whether you're chasing more top speed, stronger acceleration, or simply replacing a worn-out factory pinion, this hardened-steel gear delivers the strength and longevity that aluminum or brass pinions simply can't match.
Key Features
- Hardened steel construction with blackened finish
- 18-tooth count for tunable gear ratio
- 0.5 module (Mod) gear pitch
- 1/8" (3.2mm) bore for standard motor shafts
- 3mm set screw included for secure installation
Performance Benefits
- Hardened steel resists wear and stripping under high torque
- Consistent power transfer run after run
- Tunable ratio for top-speed or acceleration optimization
- Far longer service life than aluminum pinions
Usage Notes
Compatible with 2mm motor shafts when used with the Hot Racing CSG182R08 motor adapter. Verify gear mesh by spinning the drivetrain by hand — there should be a small amount of backlash with no binding. Apply removable thread-locker to the set screw during installation.
Technical Specs
- Material: Hardened steel, blackened finish
- Number of Teeth: 18
- Gear Pitch: 0.5 module
- Bore Diameter: 1/8" (3.2mm)
- Length: 0.35" (8.9mm)
- Tooth Face Width: 0.20" (5mm)
- Hub Outer Diameter: 0.32" (8mm)
What's Included
- One (1) 18T 0.5 Mod hardened steel pinion gear
- One (1) 3mm set screw
Fitment
- 0.5 Mod drivetrain systems with 1/8" (3.2mm) motor shafts
- Compatible with 2mm shafts via Hot Racing CSG182R08 adapter
- Common applications: 1/16, 1/18 RC vehicles using 0.5 mod gearing
Summary
The Hot Racing 18T 0.5 Module Hardened Steel Pinion Gear is a tough, reliable, gear-ratio-tuning solution for any 0.5 mod drivetrain. Drop it in, dial in your gearing, and run with confidence.
