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Sprite & Midget Top Trunnion Needle Roller Bearing Upgrade Kit - PAIR (replaces 2A4006 thrust washer

Sprite

Part no:

XSUF114BK

Product name:

Sprite & Midget Top Trunnion Needle Roller Bearing Upgrade Kit - PAIR (replaces 2A4006 thrust washer

Additional information:

Description:

Top Trunnion Needle Roller Bearing Upgrade – Austin-Healey Sprite, MG Midget, MG Midget 1500, Austin A30, A35 & A40 Farina

Upgrade the steering performance of your classic Austin Healey Sprite or MG Midget with our Top Trunnion Needle Roller Bearing Upgrade Kit. Engineered as a direct replacement for the original bronze thrust washer (OE 2A4006), this precision built bearing assembly dramatically improves steering smoothness, accuracy, and long term durability.

This upgrade is also fully compatible with classic vehicles that use the same trunnion design, including the MG Midget 1500, Austin A30, Austin A35, and Austin A40 Farina.

Why Upgrade? A High Performance, Low Friction Steering Solution

This kit replaces the factory bronze washer with a high quality needle roller bearing, reducing friction throughout the suspension’s steering pivot point. The result is lighter steering effort, improved road feel, and a more responsive front end—especially noticeable during low speed driving, manoeuvring, and parking.

Key Benefits of the Top Trunnion Needle Roller Bearing Upgrade

Significantly Reduced Steering Effort
Precision ground needle rollers provide a major reduction in friction, giving:

Smoother steering input
Noticeably lighter feel
Improved feedback and control

High Strength, Long Life Construction
Built to outperform and outlast the original thrust washer:

Chromium steel rollers withstand high loads and resist wear
Steel cage assembly maintains perfect roller spacing

Hardened & Polished Washer Set Included
Two hardened steel washers create a complete, high precision bearing raceway—ensuring:

Consistent operation
Long term reliability
Minimal wear compared to bronze washers

Enhanced Durability & Service Life
Engineered to deliver years of dependable performance, this upgrade is ideal for drivers wanting reliability beyond what the original factory setup can offer.

Perfect For Drivers Who Want:

A more modern, low friction steering feel
Improved performance for fast road or competition use
Better steering with wider wheels/tyres or increased castor
A long term fix for common trunnion thrust washer wear

Also fits the MG Midget, Midget 1500, Austin A30, A35 & A40 Farina

OE part number:

2A4006RB

Application:

MK1 - MK4

Quantity per vehicle:

Items Per Pack:

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Your Price:

£9.24 Exc VAT
£11.09 Inc VAT

Quantity:

Frequently Asked Questions

Do I need to replace both sides at the same time?

The kit is supplied as a pair, allowing both sides of the front suspension to be converted together. Replacing both sides at the same time helps maintain balanced steering feel and consistent wear characteristics.

Does it fit MG Midget and Midget 1500 models?

Yes, it is listed as compatible with MG Midget and Midget 1500 models that use the same thrust washer arrangement. As with Sprite models, compatibility depends on the car retaining the correct trunnion type.

Is special machining required to install this kit?

No additional machining is stated as required when replacing the original 2A4006 thrust washer design. Installation should be carried out during normal trunnion and king pin servicing, following the correct workshop procedure.

Is special machining required to install this kit?

Is this a direct replacement for the original thrust washer?

Yes. This kit is designed to replace the original bronze thrust washer (OE 2A4006) used in the top trunnion assembly. It converts the factory thrust washer arrangement to a needle roller bearing setup within the same trunnion location.

Is this a permanent modification?

It replaces the original thrust washer arrangement with a bearing assembly. If required, the car can be returned to a thrust washer configuration in future by refitting the original style components.

Will this fit my Austin Healey Sprite?

It is intended for Austin Healey Sprite models that use the original 2A4006 thrust washer design. Confirm the existing trunnion configuration during strip-down if there is any doubt, particularly on cars that may have been modified previously.