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74 reviews


Roll Restrictor [Focus RS/ST]

The mountune Focus roll restrictor reduces the amount of engine roll / movement during hard acceleration and gear changing, plus helps reduce 'wheel-hop', particularly when the power output has been increased.

With a product such as this, care must be taken with the design and choice of materials, as a poor design can destroy the feel and driving experience of the car.

With an extensive background working in the OEM market, mountune have the knowledge and engineering expertise to create a product which can reduce the engine movement by the desired amount, but with minimal effect to the NVH (Noise Vibration Harshness) level.

The mountune Focus roll restrictor is machined from high quality HE30 aluminium, and features a unique size and shore hardness polyurethane bush.

The bonus of using polyurethane is that not only has it been engineered to give increased stiffness without causing excessive vibrations, it also doesn’t deteriorate like rubber does, so the service life of the component is greatly increased.

Kit features:

  • Engineered and optimised for Focus RS
  • High quality HE30 anodised billet aluminum body
  • Bespoke size and shore hardness polyurethane bushes
  • Reduction in engine movement 
  • Minimal effect on NVH
Customer Reviews
4.9 Based on 74 Reviews
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United Kingdom United Kingdom
Focus st roll restrictor

Super fast delivery from mountune very pleased. Fitted yesterday and was a bit more of a pain as there was an extra bracket to be removed but once on looked and fit great. Driving, Gear changes are definitely improved, feels tighter and tracks true + no more dreaded wheel hop. On the negative there is noticeable nvh through the pedals and steering wheel throughout Rev range, hopefully this gets better or I get used to it time will tell.

United Kingdom United Kingdom
Roll restrictor

Not fitted as of yet to the ST, great quality,I have one on the RS, yeah makes a massive improvement on acceleration, slight vibration put not a issue.

Mark L.
United Kingdom United Kingdom
Roll restrictor for st

Fast delivery and well packaged. Makes a good difference to wheel hop and cornering and havent noticed any vibrations.