TrakMotive
CV Axle Shaft

TrakMotive BM-86004 CV Axle Shaft - Rear Left

Brand TrakMotive BM-86004
Position Rear Left
ABS Ring Tooth Count 0
ABS Tone Ring Included No
Axle Bolt Hex Size (mm) 17
Axle Bolt Length (mm) 83
Axle Bolt Thread Size M16x1.5
Axle Nut Included No
Grade Type Premium
Inboard Joint Type Male
Number Of Bolt Holes 0
Number Of Inboard Joint Bolt Holes 0
Number Of Inboard Shaft Bolts 0
Number Of Inboard Splines 26
Number Of Outboard Joint Bolt Holes 0
Number Of Outboard Shaft Bolts 0
Number Of Outboard Splines 31
Outboard Joint Type Flat spline
Overall Compressed Length (in) 22.31
Overall Compressed Length (mm) 567
Overall Extended Length (in) 24.06
Overall Extended Length (mm) 611
Product line CV Axle Shaft
Fits BMW · 5 vehicles

ABS-ready design. Fits non-ABS applications unless otherwise noted.

Premium grade. Built as a CV axle shaft for dependable driveline performance.

ISO certified. Made by a company certified to ISO 9001:2008 and TS 16949:2009.

Cross-references TrakMotive BM-86004 for the same application. See all 1.

$120.75Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
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Step 2 — Quantity
Order total $120.75
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

BMW i8 Rear Left CV Axle Shaft

TrakMotive BM-86004 is a premium CV axle shaft for the rear left position on select BMW i8 models. It is built for standard-duty replacement service and matches the listed spline counts and compressed/extended lengths for the application.

Compatible with 2014-2017 BMW i8 rear left and 2019 BMW i8 rear left, this axle is a direct-fit driveline replacement for vehicles using a male inboard joint and flat spline outboard joint design.

Key Features

  • Brand: TrakMotive CV Axle Shaft
  • Part number: BM-86004
  • Rear left application for BMW i8
  • Premium grade replacement axle shaft
  • Inboard joint type: male
  • Inboard splines: 26
  • Outboard splines: 31
  • Overall compressed length: 22.31 in. (567 mm)
  • Overall extended length: 24.06 in. (611 mm)
  • No ABS tone ring included
  • ABS ring tooth count: 0

Product Details

TrakMotive BM-86004 is a CV axle shaft for the rear left side of the BMW i8, covering 2014-2017 and 2019 model years. The axle is specified with a 26-spline inboard connection, 31-spline outboard connection, and a flat spline outboard joint type. TrakMotive identifies this as a premium replacement part for standard-duty service, and the company states its products are backed by a limited lifetime warranty. The manufacturer also notes ISO 9001:2008 and TS 16949:2009 certification.

This part cross-references TrakMotive BM-86004 for the same application.

Common Replacement Reasons

  • Clicking or popping from the rear left axle area during turns
  • Vibration or shudder under acceleration
  • Boot or joint wear that affects driveline smoothness
  • Axle shaft damage from road impact or drivetrain wear

Installation Notes

Verify rear left fitment against the vehicle’s axle configuration before installation. This axle uses a 17 mm hex axle bolt with M16x1.5 thread and an 83 mm bolt length. The axle nut is not included, so confirm the existing hardware condition and torque specifications for the BMW i8 before service.

Quality Assurance

TrakMotive manufactures this CV axle shaft under ISO 9001:2008 and TS 16949:2009 certified quality systems. BM-86004 is covered by a limited lifetime warranty.

This part fits 5 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2019BMWi8Rear LeftStandard Duty Replacement; CV Axle Shaft
2017BMWi8Rear LeftStandard Duty Replacement; CV Axle Shaft
2016BMWi8Rear LeftStandard Duty Replacement; CV Axle Shaft
2015BMWi8Rear LeftStandard Duty Replacement; CV Axle Shaft
2014BMWi8Rear LeftStandard Duty Replacement; CV Axle Shaft
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
TrakMotive — BM-86004