MAZDASPEED 3 BL3 2010+ 1.2F/1.1R, MAZDASPEED 3 BK3 2007-2009 1.0F/0.6R – Swift Sport Springs – Spec R – 4Z906R. Sold in a set of four springs. Made in Japan. Swift Spec-R Springs are built for track duty. Swift Spec-R springs are designed at the upper limits of the OEM shock valving. Track tested and tuned for optimum performance yet comfortable enough for a daily driver. Pictures may not be actual fitment.

Swift Springs – The Science of Winning – Not all springs are created equally. That’s why we dedicate to developing the best quality to maintain consistency.

From HPDE events to SCCA competition, Swift Spec-R Sport Springs are made for the track enthusiast looking to take their vehicle to the next level.

Swift Spec-R Sport Springs were engineered with 3 characteristics in mind – Modified ride height compared to Sport Springs to maximize optimal suspension geometry – Further increasing the spring rate to enhance overall performance. The increase in spring rate is based on the upper limits of the vehicles factory shock valving – Maintaining optimal comfort level for street use.

Spec R springs are wound with the same engineering and material as our sports springs. With the exception of stiffer rates and slight change in ride height; you can expect the same characteristics as our sports springs.