Overview
Strengthen your drivetrain foundation with the Hot Racing Aluminum Gearbox Case Bulkhead. CNC-machined from aluminum and finished in black anodizing with machined chamfered edges, this aluminum gearbox case replaces the stock plastic case for the front or rear of the 1/8 BLX Arrma platforms — Kraton, Outcast, Senton, Talion, and Typhon.
Beyond the strength upgrade, this case includes a critical drivetrain improvement: it upgrades the stock 5x11x4mm unsealed outer pinion bearing with an oversized 5x13x4mm sealed bearing for a stiffer, longer-lasting drivetrain. Better strength, better bearings, better drivetrain consistency — all in one bolt-on upgrade.
Key Features
- CNC-machined aluminum construction
- Anodized black with machine-chamfered edges
- Stronger and stiffer than stock plastic gearbox case
- Upgrades 5x11x4mm unsealed bearing to 5x13x4mm sealed bearing
- Fits both front and rear gearbox positions
- Direct fit hop-up — no modification required
Performance Benefits
- Stiffer drivetrain assembly
- Oversized sealed pinion bearing extends bearing life
- Reduced drivetrain flex under high-torque loads
- Better protection against gearbox impact damage
Usage Notes
Apply removable thread-locker on screws threading into aluminum. Replace gearbox seals and apply fresh diff oil during installation. Use only silicone diff lubricant. Verify gear mesh after final assembly.
Technical Specs
- Material: CNC-machined aluminum
- Finish: Black anodized with machine-chamfered edges
- Bearing Upgrade: 5x11x4mm unsealed ? 5x13x4mm sealed
- Position: Front or rear (universal fit)
What's Included
- One (1) aluminum gearbox case bulkhead
- Upgraded 5x13x4mm sealed pinion bearing
- Mounting hardware
Fitment
- Arrma Kraton 1/8 BLX
- Arrma Outcast 1/8 BLX
- Arrma Senton 1/8 BLX
- Arrma Talion 1/8 BLX
- Arrma Typhon 1/8 BLX
- Arrma Notorious
Summary
The Hot Racing Aluminum Gearbox Case Bulkhead delivers two critical drivetrain upgrades in one part: bulletproof aluminum construction and an upgraded oversized sealed pinion bearing. A direct-fit, no-modifications-required upgrade that strengthens the heart of your 1/8 BLX drivetrain.
