Products
Street
Info
Acura
Audi
BMW
Cadillac
Ford
Honda
Infiniti
Jeep
Lamborghini
Lexus
Mazda
McLaren
Mitsubishi
Nissan
Porsche
Subaru
Tesla
Toyota

Swift Made Sport & Spec-R Springs.

Let Superior Performance And Comfort Lower Your Car.

Info
View Applications

Sport Springs.

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. Swift did not develop the Sport Springs line by simply dropping the ride height. Unlike other manufacturers whose sole focus was style, Swift approached the creation of these lowering springs with 3 goals.

  • Maintain or improve a smooth, comfortable ride.
  • Increase handling by reducing body roll and squat in search of overall suspension balance.
  • Lower the vehicle within tolerance of each vehicle's usable stroke.

Every Car Have Their Usable Strokes.

Most enthusiasts have had experiences with the typical harsh and uncomfortable ride from lowering springs. Performance is often overlooked by manufactures simply because it is easier to lower a vehicle for aesthetics. The end result is usually a bumpy ride that causes a decrease in traction, or excessive worn shocks caused by lowering the vehicle beyond the usable stroke.

Proprietary Material And Design To Satisfy Two Contrasting Factors.

As you can imagine, keeping or improving the comfort level while increasing performance is not an easy task, especially since these two aspects contrast with each other.

Where most of the competition simply gave in to the easier method, Swift Springs decided to tackle this issue by creating our own material (H5S.TW), and unique manufacturing method that works very well for this material. Working in unison, the material and manufacturing method provides a superior level for both comfort and handling. 

The way we design lowering springs.

We utilize spring design with fewer coils which not only allows us to decrease un-sprung mass, but to also completely eliminate the chance of coil bind, while increasing the amount of usable stroke. Our proprietary material (H5S.TW) has a much quicker transient response, reacting to any road conditions which, in turn, cause a much smoother ride where other springs will skip on the harsh road surface, our spring will react to the road surface as needed.

With the Swift Sport Springs, we expect both street and circuit users to experience an increase in all aspects of suspension tuning from performance to comfort.

Bump Rubber.

Suspension usable stroke for the cars now-a-days is very limited compared to before. To let the suspension do its own job efficiently, many car manufactures use bump rubber as a part of a suspension’s functional part, not only to limit the shock stroke but to prevent the shocks from bottoming out. This scenario also applies to real world racing, and we use this as a primary focus when designing the sport springs.

Vehicle Characteristics.

Swift developed for each Sport Springs application based on the individual vehicle’s unique characteristics. Put simply, a luxury car will maintain its luxury ride, and sports car will maintain its sports car feel.

Sport Spec-R Springs.

Swift Spec-R Springs are designed at the upper limits of the OEM shock valving. Track Tested and Tuned for optimum performance yet 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.

IMG_5411edit

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 Swift Sport Springs.

With the exception of stiffer rates and slight change in ride height; you can expect the same characteristics as our sport springs.

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 testing is done on manufacture’s original shock absorbers. Replacing the shock absorbers to aftermarket could change the ride height.

DUE TO CONTINUED ENGINEERING ADVANCES, PRODUCT SPECIFICATION MAY CHANGE WITHOUT NOTICE.

ACURA Sport/Spec-R Code Year Part # Spring Rate Drop
Front Rear Front Rear
Kg/mm Kg/mm Inch Inch
ILX Spec-R - 12-15 4H915R 4.7 5.4 -1.2 -1.0
TLX (TYPE S) Spec-R - 21+ 4H920R 10.2 7.4 -1.0 -1.0
ACURA Sport/Spec-R Code Year Part # Spring Rate Drop
Front Rear Front Rear
Kg/mm Kg/mm Inch Inch
ILX Spec-R – 12-15 4H915R 4.7 5.4 -1.2 -1.0
TLX (TYPE S) Spec-R – 21+ 4H920R 10.2 7.4 -1.0 -1.0
AUDI Sport/Spec-R Code Year Part # Spring Rate Drop
Front Rear Front Rear
Kg/mm Kg/mm Inch Inch
S4 Spec-R B8, B8.5 09-16 4X923R 7.2 3.5 -0.9 -0.6
BMW Sport/Spec-R Code Year Part # Spring Rate Drop
Front Rear Front Rear
Kg/mm Kg/mm Inch Inch
135i Spec-R E82 08-13 4X904R 3.6 9.0 -1.0 -1.0
335i Spec-R E90, 92 07-13 4X905R 4.0 11.0 -1.0 -0.8
M3 Spec-R E90, 92 08-13 4X903R 5.0 12.0 -1.0 -0.7
M3 Spec-R F80 14+ 4X909R 4.8 12.8 -1.0 -0.4
M4 Spec-R F82 14+ 4X908R 5.0 13.0 -1.1 -0.9
CADILLAC Sport/Spec-R Code Year Part # Spring Rate Drop
Front Rear Front Rear
Kg/mm Kg/mm Inch Inch
CTS Spec-R – – Renick Performance Product – – -0.78 -0.78
CTS V-Sport Spec-R – – Renick Performance Product – – -0.78 -0.78
CTS-V Spec-R – 2016+ Renick Performance Product – – -0.78 -0.78
CT4 Spec-R – – Renick Performance Product – – -0.78 -0.78
CT4-V Spec-R – – Renick Performance Product – – -0.78 -0.78
CT4 Blackwing Spec-R – – Renick Performance Product – – -0.78 -0.78
Sport – – Tapout Tuning – – -0.78 -0.78
CT5 Spec-R – – Renick Performance Product – – -0.78 -0.78
CT5-V Spec-R – – Renick Performance Product – – -0.78 -0.78
CT5 Blackwing Spec-R – – Renick Performance Product – – -0.78 -0.78
ATS-V Spec-R – – Renick Performance Product – – -0.78 -0.78
FORD Sport/Spec-R Code Year Part # Spring Rate Drop
Front Rear Front Rear
Kg/mm Kg/mm Inch Inch
FIESTA ST Spec-R – 14+ 4X910R 3.8 3.8 -1.1 -1.0
FOCUS ST Spec-R – 14+ 4X907R 4.5 5.0 -1.0 -1.0
FOCUS RS Spec-R – 17+ 4X912R 5.0 5.5 -1.0 -1.0
HONDA Sport/Spec-R Code Year Part # Spring Rate Drop
Front Rear Front Rear
Kg/mm Kg/mm Inch Inch
ACCORD SPORT Spec-R CV3 18+ 4H919R 3.6 4.8 -1.2 -1.2
CIVIC SI
(2, 4door)		 Spec-R – 12-15 4H915R 4.7 5.4 -1.2 -1.0
CIVIC SPORT, SI Spec-R FK7 17+ 4H918R 4.1 5.7 -1.1 -1.1
CIVIC TYPE R Spec-R FK8 17+ 4H917R 6.3 7.4 -1.0 -1.0
FIT Sport GD3 07-08 4H912 3.0 5.6 -1.2 -1.0
FIT Sport GE8 09-14 4H021 2.3 2.1 -1.2 -1.0
FIT Sport GK5 15+ 4H916 2.5 2.8 -1.0 -0.9
S2000 Spec-R AP1/2 00-09 4H007R 7.5 7.0 -1.2 -1.2
INFINITI Sport/Spec-R Code Year Part # Spring Rate Drop
Front Rear Front Rear
Kg/mm Kg/mm Inch Inch
G37 COUPE (Q60) Sport CKV36 09-15 4N906 10.3 9.7 -1.3 -1.0
G37 X COUPE (Q60 AWD) Sport CKNV36 09-15 4N911 7.5 7.8 -1.3 -1.0
Q60 AWD Spec-R CKNV37 16+ 4N914R 9.5 5.0 -1.8 -1.8
G37 X SEDAN (Q40 AWD) Sport NV36 08-15 4N907 8.0 7.4 -1.3 -1.0
G35/37 SEDAN (Q40) Sport V36 07-15 4N908 10.0 9.0 -1.2 -0.8
Q50 RWD (Red Sport Inc) Sport KV37 14+ 4N909 9.6 4.3 -1.0 -0.6
Q50 AWD (Red Sport Inc) Sport NV37 14+ 4N910 8.0 4.2 -1.5 -1.4
JEEP Sport/Spec-R Code Year Part # Spring Rate Drop
Front Rear Front Rear
Kg/mm Kg/mm Inch Inch
Grand Cherokee Laredo Spec-R WK2 2012-2021 BlackOps Autoworks Product – – -1.6 to -1.8 -2.6 to -2.8
Grand Cherokee Limited Spec-R WK2 2021-2021 BlackOps Autoworks Product – – -1.6 to -1.8 -2.6 to -2.8
Grand Cherokee Overland Spec-R WK2 2021-2021 BlackOps Autoworks Product – – -1.6 to -1.8 -2.6 to -2.8
Grand Cherokee Summit Spec-R WK2 2021-2021 BlackOps Autoworks Product – – -1.6 to -1.8 -2.6 to -2.8
Grand Cherokee SRT Spec-R WK2 2021-2021 BlackOps Autoworks Product – – -1.6 to -1.8 -2.6 to -2.8
Grand Cherokee Trailhawk Spec-R WK2 2017+ BlackOps Autoworks Product – – -1.6 to -1.8 -2.6 to -2.8
Grand Cherokee Trackhawk Spec-R WK2 2018+ BlackOps Autoworks Product – – -1.6 to -1.8 -2.6 to -2.8
LAMBORGHINI Sport/Spec-R Code Year Part # Spring Rate Drop
Front Rear Front Rear
Kg/mm Kg/mm Inch Inch
Gallardo Sport LP550, 560, 570 10+ 4X918L 16.7 9.0 -1.7 -1.5
Huracan Spec-R Huracan, EVO, Performante 15+ Vivid Racing Product – – -0.65 -1.1
LEXUS Sport/Spec-R Code Year Part # Spring Rate Drop
Front Rear Front Rear
Kg/mm Kg/mm Inch Inch
GS350
GS460		 Sport GRS191 07-12 4T051 4.3 4.7 -1.0 -0.8
GS350 Sport GRL10 13+ 4T911 5.0 7.5 -0.8 -0.8
GS F Spec-R URL10 16+ 4T916R 8.0 14.0 -1.3 -1.0
IS250
(RWD)		 Sport GSE20L 06-13 4T040 5.4 5.6 -0.8 -0.6
IS350
(RWD)		 Sport GSE21L -1.0 -0.8
IS 250/350 Sport GSE31 14+ 4T912 5.2 7.2 -1.1 -1.1
IS500 Spec-R USE30 22+ 4T921R 6.5 10.0 -1.0 -0.6
ISF Sport USE20L 08-11 4T906 9.0 8.0 -1.0 -0.6
ISF Sport USE20L 12+ 4T910 9.7 8.3 -1.0 -0.6
RC350 (RWD) Spec-R GSC10 15+ 4T915R 5.6 11.0 -1.6 -0.9
RC F Spec-R USC10 15+ 4T914R 9.0 16.0 -1.3 -1.0
MCLAREN Sport/Spec-R Code Year Part # Spring Rate Drop
Front Rear Front Rear
Kg/mm Kg/mm Inch Inch
12C Spec-R – 11-14 Vivid Racing Product – – -1.0 -0.75
650S Spec-R – 14-17 Vivid Racing Product – – -1.0 -0.75
570S Spec-R – 16-21 Vivid Racing Product – – -1.0 -0.75
570GT Spec-R – 17-19 Vivid Racing Product – – -1.0 -0.75
MAZDA Sport/Spec-R Code Year Part # Spring Rate Drop
Front Rear Front Rear
Kg/mm Kg/mm Inch Inch
MAZDASPEED 3 Spec-R BL3 10+ 4Z906R 4.5 4.5 -1.2 -1.1
MAZDASPEED 3 Spec-R BK3 07-09 4Z906R 4.5 4.5 -1.0 -0.6
MIATA Spec-R ND 16+ 4Z908R 4.8 2.4 -1.4 -1.3
MITSUBISHI Sport/Spec-R Code Year Part # Spring Rate Drop
Front Rear Front Rear
Kg/mm Kg/mm Inch Inch
LANCER EVO 8 / 9
(GSR)		 Sport CT9A 03-07 4M008 4.8 5.7 -1.4 -0.8
LANCER EVO 8 / 9
(GSR)		 Spec-R CT9A 03-07 4M008R 6.4 6.8 -1.4 -0.8
LANCER EVO 8 / 9
(MR)		 Spec-R CT9A 05-07 4M017R 6.4 6.8 -1.4 -0.8
LANCER EVO X
(GSR, MR)		 Spec-R CZ4A 08+ 4M020R 5.3 5.3 -1.3 -1.0
NISSAN Sport/Spec-R Code Year Part # Spring Rate Drop
Front Rear Front Rear
Kg/mm Kg/mm Inch Inch
350Z Spec-R Z33 03-08 4N014R 7.5 8.2 -1.2 -1.0
370Z
(Reg, Nismo)		 Spec-R Z34 09+ 4N905R 10.0 10.5 -1.2 -1.0
GTR
(*1)		 Sport R35 09-10 4N017 15.0 7.0 -1.0 -1.0
GTR Spec-R R35 11-14 4N017R 20.0 11.0 -1.0 -1.0
GTR
(*1)		 Sport R35 15+ 4N912 9.0 4.5 -0.9 -0.8
PORSCHE Sport/Spec-R Code Year Part # Spring Rate Drop
Front Rear Front Rear
Kg/mm Kg/mm Inch Inch
911 CARERRA
(Regular & S)		 Sport 991 12+ 4X917L 3.6 7.7 -1.1 -1.1
SUBARU Sport/Spec-R Code Year Part # Spring Rate Drop
Front Rear Front Rear
Kg/mm Kg/mm Inch Inch
BRZ Spec-R ZC6 13+ 4T909R 4.4 5.3 -1.1 -1.0
FORESTER Sport SG6 04-08 4F904 3.2 3.3 -1.6 -1.2
FORESTER Sport SH6 09-13 4F908 3.8 3.6 -1.6 -1.6
IMPREZA WRX (WAGON) Sport GGA 02-03 4F003 3.3 2.9 -1.2 -0.6
IMPREZA WRX (SEDAN) Sport GDA GDB 02-03 4F005 3.3 2.7 -1.2 -0.6
IMPREZA WRX (SEDAN) Sport GDC GDD 04-07 4F901 3.4 2.7 -1.0 -0.8
IMPREZA WRX (WAGON) Sport GGA 04-07 4F903 3.3 2.9 -1.2 -1.2
IMPREZA WRX (SED / WAG) Sport GE6 / GH6 11-14 4F907 4.5 4.2 -0.8 -0.8
IMPREZA WRX STI (SED / WAG) Sport GRB 08-10 4F907 4.5 4.2 -0.8 -0.8
IMPREZA WRX STI (SED / WAG) Spec-R GRB 11-14 4F907R 6.0 7.2 -0.6 -0.6
LEGACY GT (SEDAN) Sport BL6 05-09 4F008 4.3 6.6 -1.2 -1.0
LEGACY GT (WAGON) Sport BP6 05-09 4F007 4.3 6.6 -1.2 -1.0
WRX Spec-R VAG 15+ 4F915R 6.0 7.2 -1.0 -1.0
WRX STI Spec-R VA 15+ 4F914R 6.3 7.4 -1.0 -1.0
TESLA Sport/Spec-R Code Year Part # Spring Rate Drop
Front Rear Front Rear
Kg/mm Kg/mm Inch Inch
Model 3 RWD Spec-R – 18+ 4X928 3.8 7.3 -1.0 -1.1
TOYOTA Sport/Spec-R Code Year Part # Spring Rate Drop
Front Rear Front Rear
Kg/mm Kg/mm Inch Inch
86 Spec-R ZN6 17+ 4T909R 4.4 5.3 -1.1 -1.0
SUPRA Spec-R A90 20+ 4T919R 4.8 12.0 -1.2 -1.2

Due to continued engineering advances, product specification may change without notice.

AUDI Sport/Spec-R Code Year Part # Spring Rate Drop
Front Rear Front Rear
Kg/mm Kg/mm Inch Inch
S4 Spec-R B8, B8.5 09-16 4X923R 7.2 3.5 -0.9 -0.6
BMW Sport/Spec-R Code Year Part # Spring Rate Drop
Front Rear Front Rear
Kg/mm Kg/mm Inch Inch
135i Spec-R E82 08-13 4X904R 3.6 9.0 -1.0 -1.0
335i Spec-R E90, 92 07-13 4X905R 4.0 11.0 -1.0 -0.8
M3 Spec-R E90, 92 08-13 4X903R 5.0 12.0 -1.0 -0.7
M3 Spec-R F80 14+ 4X909R 4.8 12.8 -1.0 -0.4
M4 Spec-R F82 14+ 4X908R 5.0 13.0 -1.1 -0.9
CADILLAC Sport/Spec-R Code Year Part # Spring Rate Drop
Front Rear Front Rear
Kg/mm Kg/mm Inch Inch
CTS Spec-R - - Renick Performance Product - - -0.78 -0.78
CTS V-Sport Spec-R - - Renick Performance Product - - -0.78 -0.78
CTS-V Spec-R - 2016+ Renick Performance Product - - -0.78 -0.78
CT4 Spec-R - - Renick Performance Product - - -0.78 -0.78
CT4-V Spec-R - - Renick Performance Product - - -0.78 -0.78
CT4 Blackwing Spec-R - - Renick Performance Product - - -0.78 -0.78
Sport - - Tapout Tuning - - -0.78 -0.78
CT5 Spec-R - - Renick Performance Product - - -0.78 -0.78
CT5-V Spec-R - - Renick Performance Product - - -0.78 -0.78
CT5 Blackwing Spec-R - - Renick Performance Product - - -0.78 -0.78
ATS-V Spec-R - - Renick Performance Product - - -0.78 -0.78
FORD Sport/Spec-R Code Year Part # Spring Rate Drop
Front Rear Front Rear
Kg/mm Kg/mm Inch Inch
FIESTA ST Spec-R - 14+ 4X910R 3.8 3.8 -1.1 -1.0
FOCUS ST Spec-R - 14+ 4X907R 4.5 5.0 -1.0 -1.0
FOCUS RS Spec-R - 17+ 4X912R 5.0 5.5 -1.0 -1.0
HONDA Sport/Spec-R Code Year Part # Spring Rate Drop
Front Rear Front Rear
Kg/mm Kg/mm Inch Inch
ACCORD SPORT Spec-R CV3 18+ 4H919R 3.6 4.8 -1.2 -1.2
CIVIC SI
(2, 4door)		 Spec-R - 12-15 4H915R 4.7 5.4 -1.2 -1.0
CIVIC SPORT, SI Spec-R FK7 17+ 4H918R 4.1 5.7 -1.1 -1.1
CIVIC TYPE R Spec-R FK8 17+ 4H917R 6.3 7.4 -1.0 -1.0
FIT Sport GD3 07-08 4H912 3.0 5.6 -1.2 -1.0
FIT Sport GE8 09-14 4H021 2.3 2.1 -1.2 -1.0
FIT Sport GK5 15+ 4H916 2.5 2.8 -1.0 -0.9
S2000 Spec-R AP1/2 00-09 4H007R 7.5 7.0 -1.2 -1.2
INFINITI Sport/Spec-R Code Year Part # Spring Rate Drop
Front Rear Front Rear
Kg/mm Kg/mm Inch Inch
G37 COUPE
(Q60)		 Sport CKV36 09-15 4N906 10.3 9.7 -1.3 -1.0
G37 X COUPE
(Q60 AWD)		 Sport CKNV36 09-15 4N911 7.5 7.8 -1.3 -1.0
Q60 AWD Spec-R CKNV37 16+ 4N914R 9.5 5.0 -1.8 -1.8
G37 X SEDAN
(Q40 AWD)		 Sport NV36 08-15 4N907 8.0 7.4 -1.3 -1.0
G35/37 SEDAN
(Q40)		 Sport V36 07-15 4N908 10.0 9.0 -1.2 -0.8
Q50 RWD
(Red Sport Inc)		 Sport KV37 14+ 4N909 9.6 4.3 -1.0 -0.6
Q50 AWD
(Red Sport Inc)		 Sport NV37 14+ 4N910 8.0 4.2 -1.5 -1.4
JEEP Sport/Spec-R Code Year Part # Spring Rate Drop
Front Rear Front Rear
Kg/mm Kg/mm Inch Inch
Grand Cherokee Spec-R WK2 2012-2021 BlackOps Autoworks Product - - -1.6 to -1.8 -2.6 to -2.8
LAMBORGHINI Sport/Spec-R Code Year Part # Spring Rate Drop
Front Rear Front Rear
Kg/mm Kg/mm Inch Inch
Gallardo Sport LP550, 560, 570 10+ 4X918L 16.7 9.0 -1.7 -1.5
Huracan Spec-R Huracan, EVO, Performante 15+ Vivid Racing Product - - -0.65 -1.1
LEXUS Sport/Spec-R Code Year Part # Spring Rate Drop
Front Rear Front Rear
Kg/mm Kg/mm Inch Inch
GS350
GS460		 Sport GRS191 07-12 4T051 4.3 4.7 -1.0 -0.8
GS350 Sport GRL10 13+ 4T911 5.0 7.5 -0.8 -0.8
GS F Spec-R URL10 16+ 4T916R 8.0 14.0 -1.3 -1.0
IS250
(RWD)		 Sport GSE20L 06-13 4T040 5.4 5.6 -0.8 -0.6
IS350
(RWD)		 Sport GSE21L -1.0 -0.8
IS 250/350 Sport GSE31 14+ 4T912 5.2 7.2 -1.1 -1.1
IS500 Spec-R USE30 22+ 4T921R 6.5 10.0 -1.0 -0.6
ISF Sport USE20L 08-11 4T906 9.0 8.0 -1.0 -0.6
ISF Sport USE20L 12+ 4T910 9.7 8.3 -1.0 -0.6
RC350 (RWD) Spec-R GSC10 15+ 4T915R 5.6 11.0 -1.6 -0.9
RC F Spec-R USC10 15+ 4T914R 9.0 16.0 -1.3 -1.0
MAZDA Sport/Spec-R Code Year Part # Spring Rate Drop
Front Rear Front Rear
Kg/mm Kg/mm Inch Inch
MAZDASPEED 3 Spec-R BL3 10+ 4Z906R 4.5 4.5 -1.2 -1.1
MAZDASPEED 3 Spec-R BK3 07-09 4Z906R 4.5 4.5 -1.0 -0.6
MIATA Spec-R ND 16+ 4Z908R 4.8 2.4 -1.4 -1.3
MCLAREN Sport/Spec-R Code Year Part # Spring Rate Drop
Front Rear Front Rear
Kg/mm Kg/mm Inch Inch
12C Spec-R - 11-14 Vivid Racing Product - - -1.0 -0.75
650S Spec-R - 14-17 Vivid Racing Product - - -1.0 -0.75
570S Spec-R - 16-21 Vivid Racing Product - - -1.0 -0.75
570GT Spec-R - 17-19 Vivid Racing Product - - -1.0 -0.75
MITSUBISHI Sport/Spec-R Code Year Part # Spring Rate Drop
Front Rear Front Rear
Kg/mm Kg/mm Inch Inch
LANCER EVO 8 / 9
(GSR)		 Sport CT9A 03-07 4M008 4.8 5.7 -1.4 -0.8
LANCER EVO 8 / 9
(GSR)		 Spec-R CT9A 03-07 4M008R 6.4 6.8 -1.4 -0.8
LANCER EVO 8 / 9
(MR)		 Spec-R CT9A 05-07 4M017R 6.4 6.8 -1.4 -0.8
LANCER EVO X
(GSR, MR)		 Spec-R CZ4A 08+ 4M020R 5.3 5.3 -1.3 -1.0
NISSAN Sport/Spec-R Code Year Part # Spring Rate Drop
Front Rear Front Rear
Kg/mm Kg/mm Inch Inch
350Z Spec-R Z33 03-08 4N014R 7.5 8.2 -1.2 -1.0
370Z
(Reg, Nismo)		 Spec-R Z34 09+ 4N905R 10.0 10.5 -1.2 -1.0
GTR
(*1)		 Sport R35 09-10 4N017 15.0 7.0 -1.0 -1.0
GTR Spec-R R35 11-14 4N017R 20.0 11.0 -1.0 -1.0
GTR
(*1)		 Sport R35 15+ 4N912 9.0 4.5 -0.9 -0.8
PORSCHE Sport/Spec-R Code Year Part # Spring Rate Drop
Front Rear Front Rear
Kg/mm Kg/mm Inch Inch
911 CARERRA
(Regular & S)		 Sport 991 12+ 4X917L 3.6 7.7 -1.1 -1.1
SUBARU Sport/Spec-R Code Year Part # Spring Rate Drop
Front Rear Front Rear
Kg/mm Kg/mm Inch Inch
BRZ Spec-R ZC6 13+ 4T909R 4.4 5.3 -1.1 -1.0
FORESTER Sport SG6 04-08 4F904 3.2 3.3 -1.6 -1.2
FORESTER Sport SH6 09-13 4F908 3.8 3.6 -1.6 -1.6
IMPREZA WRX
(WAGON)		 Sport GGA 02-03 4F003 3.3 2.9 -1.2 -0.6
IMPREZA WRX
(SEDAN)		 Sport GDA GDB 02-03 4F005 3.3 2.7 -1.2 -0.6
IMPREZA WRX
(SEDAN)		 Sport GDC GDD 04-07 4F901 3.4 2.7 -1.0 -0.8
IMPREZA WRX
(WAGON)		 Sport GGA 04-07 4F903 3.3 2.9 -1.2 -1.2
IMPREZA WRX
(SED / WAG)		 Sport GE6 / GH6 11-14 4F907 4.5 4.2 -0.8 -0.8
IMPREZA WRX STI
(SED / WAG)		 Sport GRB 08-10 4F907 4.5 4.2 -0.8 -0.8
IMPREZA WRX STI
(SED / WAG)		 Spec-R GRB 11-14 4F907R 6.0 7.2 -0.6 -0.6
LEGACY GT
(SEDAN)		 Sport BL6 05-09 4F008 4.3 6.6 -1.2 -1.0
LEGACY GT
(WAGON)		 Sport BP6 05-09 4F007 4.3 6.6 -1.2 -1.0
WRX Spec-R VAG 15+ 4F915R 6.0 7.2 -1.0 -1.0
WRX STI Spec-R VA 15+ 4F914R 6.3 7.4 -1.0 -1.0

TESLA Sport/Spec-R Code Year Part # Spring Rate Drop
Front Rear Front Rear
Kg/mm Kg/mm Inch Inch
Model 3 RWD Spec-R - 18+ 4X928 3.8 7.3 -1.0 -1.1
TOYOTA Sport/Spec-R Code Year Part # Spring Rate Drop
Front Rear Front Rear
Kg/mm Kg/mm Inch Inch
86 Spec-R ZN6 17+ 4T909R 4.4 5.3 -1.1 -1.0
SUPRA Spec-R A90 20+ 4T919R 4.8 12.0 -1.2 -1.2

Swift Springs - Sport & Spec-R Lowering Springs

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 testing is done on manufacture’s original shock absorbers. Replacing the shock absorbers to aftermarket could change the ride height.

DUE TO CONTINUED ENGINEERING ADVANCES, PRODUCT SPECIFICATION MAY CHANGE WITHOUT NOTICE.

Facebook

YouTube

Instagram

MON - FRI: 8AM - 5PM PST

(909) 393-8623

Subscribe to our emailing list