TrakMotive TO-8378 CV Axle Shaft - Rear Left or Rear Right

CV Axle Shaft for Toyota 86 and Scion FR-S

TrakMotive TO-8378 is a new CV axle shaft built for rear driveline service on select Toyota 86 and Scion FR-S applications. It is specified with a neoprene boot, a male inboard shaft connection, and a conventional outboard joint for direct replacement use.

Key Features

• TrakMotive CV Axle Shaft, part number TO-8378
• Fits rear, rear right, and rear left applications listed below
• New axle assembly with 30 inboard splines and 27 outboard splines
• Neoprene boot material for driveline protection
• Includes axle nut with M22 x 1.5 thread, 31.8 mm hex size, and stake locking type
• Overall compressed length: 31.14 in. (791 mm)
• ABS tone ring not included

Detailed Description

TrakMotive TO-8378 is a CV axle shaft for rear driveline replacement on 2013-2016 Scion FR-S and 2017-2020 Toyota 86 applications. The axle uses a male inboard shaft connection, a spline-style outboard connection, and a conventional outboard joint layout to match the listed vehicle configurations. This part number is also referenced as SU00300785 for the same application.

The TrakMotive CV Axle Shaft line focuses on replacement driveline components built to OE-style dimensions and connection points. TO-8378 is a new unit, not remanufactured, and is manufactured by an ISO 9001:1007 and TS 16949:2009 certified company. Use this part when servicing rear axle wear, boot damage, or driveline vibration concerns on Toyota 86 and Scion FR-S rear axle applications.

What This Axle Shaft Helps Address

• Clicking or popping from a worn rear CV joint
• Boot cracking or grease loss at the axle assembly
• Vibration or shudder from a damaged rear axle shaft
• Noise caused by spline or joint wear in the rear driveline
• Replacement needs after axle seal or joint failure

Installation Notes and Tips

• Verify rear position and side-specific fitment before installation.
• Confirm axle nut thread size, hex size, and locking style match the vehicle requirements.
• Inspect hub, seal, and mating surfaces for wear before installing the new axle.
• Check spline engagement and joint seating during assembly.
• Follow the vehicle service procedure for torque and final fastener staking.

Quality Assurance

TrakMotive TO-8378 is backed by a limited lifetime warranty. The manufacturer states that ABS axles fit non-ABS applications unless otherwise noted, and the company is certified to ISO 9001:1007 and TS 16949:2009 standards.