The WG2210100186 Range Gear Synchronizer Sliding Sleeve is a key synchronized shifting component in heavy-duty truck transmissions, also known as the auxiliary gearbox range gear sliding sleeve.
It works together with the synchronizer ring and gear hub to achieve precise high-low range shifting and smooth power transmission in the auxiliary gearbox system. It is an essential part to ensure stable performance and smooth operation of range shifting in heavy-duty trucks.
This component is widely used in gearbox assembly, maintenance, and replacement for heavy-duty commercial vehicles.

Main Function
- Enables accurate high and low range gear switching
- Works with synchronizer ring for smooth engagement
- Ensures stable and continuous power transmission
- Improves overall gearbox shifting performance
Product Advantages
● Smooth Synchronization & Precise Shifting
The spline and gear surfaces are processed with micro-level precision grinding, ensuring:
- Tight and accurate engagement with synchronizer components
- Smooth sliding without sticking or jamming
- Elimination of gear grinding noise and impact
This significantly improves shifting smoothness and driving comfort.
● Solves Common Transmission Problems
This product effectively resolves common gearbox issues such as:
- Difficulty in high/low range shifting
- Gear grinding noise (gear crashing)
- Poor synchronization performance
- Power transmission interruption
It helps quickly restore normal gearbox operation and improves vehicle efficiency.
● High Strength & Impact Resistance
Manufactured from high-strength alloy structural steel with precision forging, the sleeve features:
- Excellent toughness and hardness balance
- Strong resistance to sudden high torque impact
- High durability under frequent shifting conditions
It is resistant to deformation, tooth breakage, and excessive wear.
● Advanced Heat Treatment Process
The gear surface and internal spline adopt high-frequency quenching + precision grinding, providing:
- Uniform hardness distribution
- Excellent wear resistance
- Strong fatigue resistance
The micro-level precision surface ensures stable synchronization performance under heavy load.
● Designed for Heavy-Duty Applications
Specially optimized for harsh working conditions such as:
- Mining transportation
- Construction dump trucks
- Heavy-load logistics operations
Ensures stable high/low range shifting even under extreme load conditions.
Technical Features
- Precision forged alloy steel structure
- High-frequency heat treatment
- Micro-level spline grinding technology
- Tight tolerance control
- Optimized for auxiliary transmission systems
Application Scope
- Heavy-duty truck transmissions
- Auxiliary gearbox systems (range box)
- Commercial vehicle driveline systems
- Transmission repair and OEM replacement
Performance Benefits
- Smooth and precise high-low gear shifting
- Reduced gear grinding and abnormal noise
- Improved synchronization efficiency
- Stable performance under heavy load conditions
Supply & Service
- Ready stock for fast delivery
- OEM and customization available
- Stable quality for long-term cooperation
- Professional technical support provided

