MX-5 / Miata NC / RX-8 Front Lower Control Arm Spherical Bearing (Spherical Bush) Conversion Kit - Set of 6

£399.99
/
  • Fits MX-5 NC & RX-8
  • 7075-T6 aluminium, CNC machined
  • PTFE-lined motorsport bearings
  • No chassis modifications
  • In stock, ready to ship
  • Secure checkout

MX-5 / Miata NC / RX-8 Bushing Upgrade Builder

Build your MX-5 / Miata NC / RX-8 bushing upgrade package.

Up to 15% off supporting upgrades! Stack products to increase discounts - applied once items are added to the cart.

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MX-5 / Miata NC / RX-8 Spherical Bearing Conversion For Front Lower Control Arms
MX-5 / Miata NC / RX-8 Spherical Bearing Conversion For Front Lower Control Arms – view 2
MX-5 / Miata NC / RX-8 Spherical Bearing Conversion For Front Lower Control Arms
MX-5 / Miata NC / RX-8 Spherical Bearing Conversion For Front Lower Control Arms – view 2

Overview

Front lower control arm spherical bearing conversion kit (set of 6) for converting your own Mazda MX-5 / Miata NC (2005–2015) or RX-8 (2003–2012) lower arms. They replace the OEM rubber or aftermarket polyurethane bushes in the front LCA for sharper road holding.

Designed for track-focused and race cars, where suspension geometry matters more than NVH (noise, vibration and harshness). Pair them with our other spherical bearings for complete suspension control.

Also known as spherical bushes, rose joint bushes or pillow ball bushes.

Specifications

FitsMazda MX-5 / Miata NC (Mk3, Mk3.5, Mk3.75), 2005–2015
Mazda RX-8 (SE3P), 2003–2012
PartLower Control Arm
Material7075-T6 Aluminium
ManufacturingCNC Machined
FinishRaw
Pack sizeSet of 6
ReplacesFactory rubber or polyurethane LCA bushes
  • Less deflection, for sharper handling and steering response
  • Minimises alignment drift
  • Stiffer than standard rubber or polyurethane bushes
  • Low-friction PTFE (Teflon) liner between ball and body
  • Consistent damping through the full range of arm movement
  • No modifications to the chassis or standard mounting points
  • 6 × billet aluminium spherical bearing housings
  • 6 × motorsport spherical bearings, pre-installed
  • 6 × internal snap rings
  • 12 × stainless steel misalignment spacers

The housings are pressed into the lower control arm using a retaining compound such as Loctite 603 – key the mating face first. Use a hydraulic press rather than a vice or bearing installation tool, to avoid misalignment and galling. Integrated bevels ease installation and can also be used for extra mechanical retention of the housing in the arm, if desired.

Spherical bearings or polyurethane bushes – what's the difference?

A polyurethane bush still flexes, and can bind as the arm moves through its travel. A spherical bearing rotates freely without deflecting, so your alignment and geometry stay where you set them under load. The trade-off is more noise and vibration passed into the car.

Can I use them on a road car?

They're designed for track-focused and race cars, where suspension geometry matters more than comfort. On a road car, expect noticeably more noise, vibration and harshness (NVH) than with rubber bushes.

We do our best to process and ship orders within 1-2 business days (Monday-Friday, excluding holidays). Delivery time depends on location. Below are examples:

UK: 24hrs

Europe: 3-5 days

America and Canada: 5-7 days

Australia: 5-7 days

If you have any questions about your order, you can reach out to our Customer Service team and we will be happy to help.


We Guarantee Everything We Make

If you are not satisfied with one of our products at the time you receive it, or if one of our products does not perform to your satisfaction, please get in touch and we'll make it right. We've been trading for over 2 years and not once had return due to fault or poor quality.

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