Racingline MQB Subframe Bolt Collar Alignment Kit – VWR150000
The Racingline MQB Subframe Bolt Collar Alignment Kit is a simple, affordable upgrade that solves a well-known weakness in the MQB platform: oversized factory subframe bolt holes. By precisely locating the subframe every time it is fitted, this kit delivers sharper, more consistent handling and helps keep your wheel alignment within tolerance for longer.
The Problem with the Factory Design
On MQB vehicles, the subframes (the structural cradles that hold the suspension and engine in place) are bolted to the chassis through oversized holes. This was done deliberately at the factory to give technicians flexibility when aligning the assembly, but it comes at a cost. Every time the subframe is unbolted and refitted, it can sit slightly differently. Under hard driving, the subframe can also shift over time, gradually pulling the geometry out of specification.
The result is vague steering feel, inconsistent handling, and the need for repeated wheel alignments.
The Racingline Solution
This kit includes 16 precision-machined push-in collars that fill the gap between the factory bolts and the oversized holes. Once installed, the subframes are perfectly centred and locked in position, removing the slack that the factory design leaves behind.
The benefits are noticeable on the road and on track:
- Sharper steering response with a more connected, planted feel through corners
- More consistent handling under heavy braking and cornering loads
- Repeatable alignment every time the subframes are refitted, saving on future geometry costs
- No added NVH – the kit will not transfer extra noise, vibration, or harshness into the cabin
- Quality build – manufactured from T6061 billet aluminium with a gloss black anodised finish
Fitment
This kit is designed for the wide range of VW Group MQB platform vehicles, covering popular models from Volkswagen, Audi, SEAT, CUPRA and Skoda. Please use the vehicle lookup tool on our site, or check the Vehicle Fitment tab, to confirm compatibility with your specific car.
Installation Notes
Fitting is straightforward and typically takes around one hour. The collars simply push into place with no modification required to the subframe or chassis.
Important: The factory subframe bolts are stretch bolts and are designed for one-time use only. They must be replaced with new bolts whenever the subframe is removed.
Critical: After fitment, a full professional wheel and geometry alignment must be carried out. This kit ensures the subframe is correctly centred, but the final alignment of the suspension still needs to be set by a qualified technician.
Why Buy From Progressive Parts
As an authorised UK dealer for Racingline Performance, we supply only genuine parts developed and tested by Racingline. Their products are proven in motorsport before being refined for road use, giving you upgrades that are both reliable and effective.
Applications
Please note, customers are wholly responsible for checking fitment for their vehicle.











