The XRAY 77mm Rear Drive Shaft is a precision CNC-machined CVD driveshaft manufactured from XRAY's renowned HUDY Spring Steel™. Designed for competition-level durability and drivetrain efficiency, this rear driveshaft features a 2.5mm drive pin and a thin, lightweight profile while maintaining excellent strength. XRAY directly confirms these specifications for part 325327.
About the Rear Drive Shaft
Precision Drivetrain Performance
The 77mm driveshaft is designed to provide efficient power transfer through the rear drivetrain. XRAY uses a proprietary hardening process on its HUDY Spring Steel™ driveshafts to increase durability and service life while maintaining a thin shaft profile for reduced rotating mass.
Features:
- Genuine XRAY replacement drivetrain component
- CNC-machined CVD rear driveshaft
- Premium HUDY Spring Steel™ construction
- 77mm length
- 2.5mm drive pin
- Thin, lightweight driveshaft design
- Designed for maximum drivetrain efficiency
- Proprietary hardened construction for increased durability
- Precision manufactured for competition RC racing
Includes:
- (1) XRAY Rear Drive Shaft
Specifications:
Manufacturer: XRAY
Part Number: 325327
Material: HUDY Spring Steel™
Length: 77mm
Drive Pin: 2.5mm
Position: Rear
Quantity: 1
Compatibility:
✅ XRAY XB2
XRAY's XB2 manuals continue to list 325327 in the rear drivetrain, including newer XB2 configurations.
There is also evidence of this 77mm shaft being used on certain XB4 configurations, but I would not advertise universal XB4 compatibility because fitment varies by generation and setup.
💡 Pro Tip:
When replacing the rear driveshaft, inspect the drive shaft coupling, 2.5mm pin, drive axle, and bearings for wear at the same time. Excessive play in any of these components can reduce drivetrain efficiency and accelerate wear on the new shaft.
