Overview
Solve the stock plastic spur gear's biggest weakness with the Hot Racing Steel 57T 32-Pitch Heavy-Duty Spur Gear, designed specifically for Arrma 1/10 4x4 3S BLX brushless platforms. CNC-machined from hardened steel with a black-oxide coating and lightened spokes, this 0.8 module (32-pitch) spur replaces the failure-prone factory plastic AR310907/AR310879/AR310947 gear with a steel gear built to handle 3S BLX brushless torque without skipping a tooth.
For Arrma 4x4 3S BLX drivers tired of stripping plastic spurs at the worst possible moments, this is the bulletproof fix you've been waiting for.
Key Features
- CNC-machined hardened steel, lightened design
- Black oxide coating for durability and corrosion resistance
- 32 pitch / 0.8 module
- 57 teeth
- Compatible with both Arrma slipper assemblies (AR310790 and AR310908)
- Compatible with Hot Racing ATF15H/ATF15HN aluminum slipper pads
Performance Benefits
- Eliminates stripped plastic spur gear failures
- Handles 3S BLX brushless torque without complaint
- Long service life under aggressive driving
- Lightened design reduces drivetrain inertia
Usage Notes
Verify gear mesh after installation; there should be a small amount of backlash with no binding. Apply gear grease to teeth during installation. Compatible with stock factory slipper pads (AR310790, AR310908) or Hot Racing ATF15H/ATF15HN aluminum slipper pads.
Technical Specs
- Material: CNC-machined hardened steel
- Finish: Black oxide coated
- Module: 0.8 (32 pitch)
- Tooth Count: 57T
- Tooth Face Width: 6mm (0.24 in)
- Replaces: Arrma AR310907 / AR310879 / AR310947 plastic spurs
What's Included
- One (1) 57T 32-pitch (0.8 Mod) steel spur gear
Fitment
- Arrma Big Rock 4x4 3S BLX (AR102711)
- Arrma Granite 4x4 3S BLX (AR102666)
- Arrma Senton 4x4 3S BLX (AR102668)
- Arrma Typhon 4x4 3S BLX (AR102696)
Summary
The Hot Racing Steel 57T 32-Pitch Heavy-Duty Spur Gear is the right fix for any Arrma 1/10 4x4 3S BLX driver who has stripped a stock plastic spur. Hardened steel construction, brushless-ready, drop-in fit — install once, drive without spur worries.
