RS-R F901W Down Sus Lowering Springs for 2014-2018 Subaru Forester 2.0XT SJG

Vehicle Fitment

• 2014-2018 Subaru Forester 2.0XT (SJG chassis, 2.0L FA20DIT turbocharged, all trim levels including 2.0XT Premium and 2.0XT Touring)

Fitment Notes

• Fits the turbocharged 2.0XT model ONLY - the F901W is engineered specifically for the SJG (turbocharged) variant of the SJ-generation Forester; it does NOT fit the naturally aspirated Forester 2.5i or 2.0i (SJ chassis); the turbo and non-turbo SJ Foresters use different suspension spring rates, geometry, and damping characteristics; installing these springs on a non-turbo SJ Forester is not recommended and may result in incorrect ride height and handling behavior
• Designed for use with factory Subaru shock absorbers - the Down Sus spring rates (4.29 kg/mm front / 4.49 kg/mm rear) are calibrated for compatibility with the SJG's OEM shock damping curves; these springs can be used with factory struts without modification; aftermarket performance shocks with stiffer valving may provide a firmer overall setup
• No cutting of bump stops required - RS-R designs the Down Sus springs to work with factory bump stops at their stock length; do not shorten or cut the bump stops
• Quantity: 4 springs per set (complete vehicle set - two front, two rear)
• California: verify current emissions and modification compliance before ordering; some dealers cannot ship RS-R lowering springs to California addresses
• Does not fit: Subaru Forester Sport, e-BOXER, or any SG, SF, or SH generation Forester

Features

• RS-R Down Sus series - RS-R's street-oriented mild-drop lowering spring line, positioned as the entry point in the RS-R spring lineup for drivers who want improved stance and handling without significantly increasing stiffness or sacrificing daily ride comfort; the Down Sus philosophy is to provide a meaningful drop while maintaining compatibility with factory shock absorbers and preserving enough suspension travel for road conditions encountered in everyday driving
• Vehicle-specific engineering - RS-R engineers each Down Sus spring set to the specific vehicle's factory suspension geometry, OEM spring rates, shock damping characteristics, and intended ride height; the SJG Forester sits higher than typical sport sedans due to its AWD crossover design, and the F901W is calibrated to provide a meaningful drop from this taller starting point while maintaining the SJG's characteristic all-weather composure
• Front drop of 30-35mm (1.2"-1.4") - the front lowering reduces the factory fender gap at the front wheels, visually filling the wheel arches and bringing the front end closer to the wheel for a more planted, performance-oriented stance
• Rear drop of 40-45mm (1.6"-1.8") - the rear drops slightly more than the front, which accounts for the SJG's factory rear-bias ride height and produces a more level final stance rather than a nose-high or nose-low result after installation
• Spring rates of 4.29 kg/mm front and 4.49 kg/mm rear - these are modest increases over the SJG's factory spring rates, providing improved body motion control without the harshness of high-rate sport springs; the mild rate increase improves cornering composure and reduces body roll without creating the jarring low-speed ride that accompanies very stiff lowering springs on a vehicle designed for AWD all-weather use
• JDM-origin engineering - RS-R is an Osaka-based Japanese manufacturer that primarily develops springs for the Japanese domestic market and exports them for international sale; the F901W was developed against the JDM SJG (2.0XT EyeSight) specification, which uses the same FA20DIT engine and SJG suspension platform as the US 2.0XT; this provides authentic market-specific tuning rather than generically resprung universal specifications
• Limited Lifetime Warranty against manufacturing defects

Specifications

• Part Number: F901W
• Brand: RS-R (Racing Studio-R)
• Series: Down Sus (Down Suspension)
• Application: 2014-2018 Subaru Forester 2.0XT (SJG, turbocharged only)
• Front Drop: 30-35mm (approx. 1.2"-1.4")
• Rear Drop: 40-45mm (approx. 1.6"-1.8")
• Front Spring Rate: 4.29 kg/mm
• Rear Spring Rate: 4.49 kg/mm
• Quantity: 4 springs (complete set)
• Country of Origin: Japan
• Warranty: RS-R Limited Lifetime Warranty

Included Components

• 2x RS-R Down Sus Front Lowering Springs
• 2x RS-R Down Sus Rear Lowering Springs

Product Description

The RS-R F901W is the Down Sus lowering spring set for the 2014-2018 Subaru Forester 2.0XT (SJG), the turbocharged variant of Subaru's SJ-generation Forester crossover. RS-R, a Japanese suspension manufacturer based in Osaka, is one of the primary OEM-and-aftermarket spring suppliers in the Japanese domestic market and has developed the Down Sus line as a mild, street-focused lowering solution that is specifically calibrated for each target vehicle. The F901W fits exclusively the SJG turbocharged platform - not the naturally aspirated SJ Forester 2.5i or 2.0i, which use different spring rates and suspension geometry.

The Down Sus delivers 30-35mm of front drop and 40-45mm of rear drop, with the rear dropping slightly more to compensate for the SJG's factory rear-biased ride height and produce a level final stance. Spring rates of 4.29 kg/mm front and 4.49 kg/mm rear are modest increases above the factory specification, calibrated for the OEM shock absorbers' damping curves. This approach allows the F901W to be installed directly onto the factory Subaru struts without shock absorber modifications, making it a straightforward upgrade path for SJG Forester owners who want improved stance and handling without committing to a full coilover conversion. The Down Sus design philosophy deliberately avoids the very stiff spring rates common in more aggressive lowering springs, recognizing that the Forester XT's AWD utility and all-weather use case are better served by a moderate spring rate increase than by track-oriented stiffness that would degrade everyday traction and comfort.

The F901W was originally developed against the JDM Subaru Forester SJG (2.0XT EyeSight) specification, which shares the FA20DIT turbocharged flat-four and SJG suspension platform with the US-market 2.0XT. Sold as a full set of four springs. Covered by RS-R's Limited Lifetime Warranty against defects in materials and workmanship.