Factory original 21.5mm Front Anti-Sway Bar and bushings for the 2007-2013 R56 MINI Cooper. Use this front bar on your MINI (except for R56 Cooper) to increase rear bias for better turn-in performance. See the list below for stock front anti-sway bar sizes on your model.
The stock suspension is designed from the factory with a slight front bias which induces 'understeer' at the limits. This is considered safer than 'oversteer' (oversteer can lead to an uncontrolled spin). For the performance driver, the preference is for a neutral bias or a slight rear bias which helps the car rotate in turns.
The simplest way to change this bias is to increase the rear sway bar size. The other method is to reduce the front sway bar size which has the same effect. Reducing the front sway bar size has the advantage that it does a better job of keeping both wheels on the ground in corners, improving front traction (when compared to a larger front bar), in addition to increasing the rear bias.
Take a look at the list below to determine the front bar size on your MINI. By switching to the 21.5mm Cooper front bar, you can improve the balance in your MINI for faster lap times!
Here are the stock front bar sizes:
2007-2013 R56 MINI Cooper S Hardtop - 22.5mm
2007-2013 R56 MINI Cooper S Hardtop with Sport Suspension - 23.5mm
2008-2014 R55 MINI Cooper Clubman - 22.5mm
2008-2014 R55 MINI Cooper S Clubman - 23.5mm
2008-2014 R55 MINI Clubman with Sport Suspension - 24.0mm
2009-2015 R57 MINI Cooper Convertible - 22.5mm
2009-2015 R57 MINI Cooper S Convertible - 22.5mm
2009-2015 R57 MINI Convertible with Sport Suspension - 23.5mm