Bully 2 Competition Crawler Front Axle

RC4WD BULLY 2 COMPETITION CRAWLER FRONT AXLE

The RC4WD Bully 2 Competition Crawler Front Axle (Z-A0012) is a purpose-built MOA competition axle engineered around strength, low weight, steering authority, and drivetrain efficiency. This is not a generic trail axle adapted for competition use; it was developed specifically for serious rock-crawling applications where gear reduction, axle rigidity, and component packaging directly affect line control and obstacle clearance.

COMPETITION-GRADE CONSTRUCTION

RC4WD machines the axle around a 6061 aluminum housing with a smooth black anodized finish. Internally, the axle uses hardened steel gears, full ball bearings, and a high-reduction drivetrain designed to deliver controlled torque at very low wheel speed. The front axle also integrates a servo-mount architecture capable of accepting oversized servos, which is important on competition crawlers where steering load can be extreme.

• Part Number: Z-A0012
• Construction: CNC-machined 6061 aluminum
• Finish: Smooth black anodized
• Internal Gears: Hardened steel, lightweight gear design
• Gear Pitch: Standard 48 pitch
• Gear Ratio: 40.75:1 with 14T pinion
• Hex-to-Hex Width: 8.64in / 219.5mm
• Wheel Hex: 12mm steel
• Bearings: Full ball-bearing support
• Servo Mount: Designed to accommodate oversized servos
• Weight: 11.7oz / 332g

WHY THE 40.75:1 REDUCTION MATTERS

Competition crawling is about controlled torque, not wheel speed. The deep 40.75:1 axle reduction helps the drivetrain meter power smoothly at the tire, giving the driver finer throttle control when loading a tire against a ledge, sidehilling, or making a slow technical climb. That reduction also helps reduce the amount of motor speed required for low-speed axle torque.

FRONT-AXLE STEERING ARCHITECTURE

The Bully 2 front axle supports dedicated steering components including replaceable C-hubs, steering knuckles, XVD axle shafts, servo mount, link mounts, and 12mm front hexes. This modular design is useful for competition builds because damaged wear parts can be serviced individually rather than forcing replacement of the complete axle assembly.

WHAT'S INCLUDED

• 1x Bully 2 Competition Crawler Front Axle
• 1x 14T Pinion
• 1x M3 x 3mm Set Screw

COMMON REPLACEMENT / SERVICE PARTS

• XVD Axle for Bully 2 Competition Crawler Axle
• Bully 2 12mm Front Axle Hex
• Bully 2 Servo Mount
• Bully 2 Steering Knuckles
• Bully 2 Upper Link Mount
• Bully 2 C-Hubs
• Bully 2 Lower Link Mounts
• Bully 2 Gear Set

INSTALLATION & SETUP NOTES

Because this is a competition drivetrain component, check all fasteners, bearings, steering components, and gear engagement before use. Confirm the motor/pinion configuration matches the intended Bully 2 setup and verify the steering linkage cycles lock-to-lock without binding.

GASHEAD RC NOTE: This axle makes sense when you are building or restoring a true Bully 2 competition crawler. The combination of 6061 aluminum construction, hardened steel gears, deep reduction, and modular steering hardware is exactly what separates a dedicated comp axle from a basic scale-trail axle.