SWIFT Spec-R Lowering Springs 3 Series Sale

SWIFT Spec-R Lowering Springs 3 Series

$319.00 $499.00
Availability: In Stock
Brand:SWIFT
Product Code: 4X905R
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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.



Swift made Sport Springs keeps the quality ride you get from the showroom, and adds improved handling and lower ride height for driving enthusiasts and style minded drivers who demand only the best.

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.

  1. Modified ride height compared to Sport Springs to maximize optimal suspension geometry.
  2. 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.
  3. 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.

BMW Note Chassis
Code
Year Part No. Spring Rate Drop
Front Rear Front Rear
Kg/mm Lbs/Inch Kg/mm Lbs/Inch mm Inch mm Inch
335i E90, 92 07-13 4X905R 4.0 223 11.0 615 -25 -1.0 -20 -0.8
328i TBA F30 14+
335i TBA F30 14+
M3 E90, 92 08-13 4X903R 5.0 279 12.0 670 -25 1.0 -18 -0.7
M3 F80 14+ 4X909R 4.8 268 12.8 715 -25 -1.0 -10 -0.4
M4 F82 14+ 4X908R 5.0 279 13.0 726 -28 -1.1 -23 -0.9
135i E82 08-13 4X904R 3.6 201 9.0 503 -25 -1.0 -25 -1.0
Note: Vehicle drop rate is based on the year, model and option of the test vehicle, and may vary based on each vehicle condition.
All the specs above are subject to change without any notice.

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