Description
Upgrade the rear suspension on your Surron Ultra Bee with the PURE Racing TRX Rear Shock, configured with the Trail valve tune and 500 lb coil spring for controlled, supportive, and comfortable performance across trails, enduro riding, technical terrain, and general off-road use.
The TRX uses a dual parallel oil damping system with independently adjustable compression and rebound, giving riders precise control over rear suspension behavior. Both compression and rebound offer 19 stages of adjustment, making it easy to fine-tune the shock for terrain, rider preference, and riding style.
Internally, PURE's 3D-printed Waffle Piston technology and precision-honed cylinders are engineered to improve oil flow, damping consistency, traction, and suspension response. The structural components are 5-axis CNC-machined, while the linkage plate design is optimized for rigidity, fatigue resistance, and strength.
The 500 lb Trail configuration is also PURE Racing's recommended rear-shock match for the TRAXION Trail 960N fork, creating a balanced front and rear suspension package for the Surron Ultra Bee.
Key Features
- TR Trail valve tune
- 500 lb coil spring
- 19-stage compression adjustment
- 19-stage rebound adjustment
- Dual parallel oil damping system
- 3D-printed Waffle Piston technology
- Precision-honed internal cylinders
- Custom oil and dust seals
- Progressive and controlled damping response
- 5-axis CNC-machined components
- Direct replacement for the factory Ultra Bee rear shock
Compatibility
- Surron Ultra Bee
- Supermach SM01
Technical Specifications
- Model: TRX 673A
- Valve Tune: Trail
- Spring Rate: 500 lb
- Damper: Dual parallel oil system
- Compression Adjustment: 19-stage
- Rebound Adjustment: 19-stage
- Weight: 3.1 kg
Included
- PURE Racing TRX 673A rear shock
- 500 lb coil spring
Installation Note: The factory Surron Ultra Bee linkage and mounting bolts are reused. The TRX installs in the stock shock location with no additional mounting components required.
Suspension Pairing: PURE Racing recommends pairing the TRX Trail 500 lb rear shock with the TRAXION Trail 960N fork for a balanced Trail suspension setup.









