RS-R T580D Down Sus Lowering Spring Set 2016-2022 Toyota Prius ZVW50/ZVW51

Vehicle Fitment

• 2016-2022 Toyota Prius Three (ZVW50 chassis, FWD)
• 2016-2022 Toyota Prius Four (ZVW50 chassis, FWD)
• 2016-2022 Toyota Prius Four Touring (ZVW51 chassis, FWD)

Fitment Notes

• FWD (front-wheel drive) models only - confirm chassis code ZVW50 or ZVW51 before ordering
• Designed to work with factory OEM shock absorbers - no shock replacement required
• Drop amount varies by trim level (see Specifications below)
• Post-installation wheel alignment is strongly recommended
• Includes all 4 springs (front pair and rear pair)

Features

• Authentic JDM-spec RS-R Down Sus springs - manufactured in Japan to RS-R's original specifications for the Japanese domestic market
• Vehicle-specific spring rates engineered to maintain factory suspension geometry, proper shock damping compatibility, and correct ride height ratios for the ZVW50/ZVW51 Prius platform
• Progressive spring rate design - delivers compliance over small road irregularities while providing firmer response under load and during cornering
• Lowers ride height for improved stance and reduced center of gravity - enhances handling and reduces body roll versus stock springs
• Drop values calibrated per trim level to account for the different spring rates and suspension tuning of the Three, Four, and Four Touring variants
• Direct bolt-on replacement for OEM springs - compatible with factory shocks and struts
• Backed by RS-R's 3-year / 36,000-mile warranty from date of purchase

Specifications

• Part Number: T580D
• Series: Down Sus
• Front Spring Rate: 2.90 kg/mm
• Rear Spring Rate: 4.29 kg/mm
• Approximate Drop - ZVW50 Prius Three: Front 30-35mm (1.2-1.4 in.) / Rear 20-25mm (0.8-1.0 in.)
• Approximate Drop - ZVW50 Prius Four: Front 25-30mm (1.0-1.2 in.) / Rear 20-25mm (0.8-1.0 in.)
• Approximate Drop - ZVW51 Prius Four Touring: Front 30-35mm (1.2-1.4 in.) / Rear 20-25mm (0.8-1.0 in.)
• Shock Compatibility: Factory OEM shocks/struts
• Drivetrain: FWD only
• Quantity: 4 springs (complete set - front and rear)
• Warranty: 3 years / 36,000 miles from date of purchase

Included Components

• 2x Front Lowering Springs
• 2x Rear Lowering Springs

Product Description

The RS-R T580D Down Sus is a complete 4-spring lowering set engineered specifically for the 2016-2022 Toyota Prius on the ZVW50 and ZVW51 chassis. Manufactured in Japan to RS-R's original JDM specifications, these springs are developed with careful consideration of the Prius platform's factory suspension geometry, shock damping characteristics, and trim-specific ride height calibration - with drop values adjusted independently for the Three, Four, and Four Touring variants to account for their different OEM spring rates and suspension tuning.

The Down Sus progressive spring rate delivers compliance over road irregularities for daily-driving comfort while providing a firmer, more controlled response during spirited driving and cornering. Front spring rate is 2.90 kg/mm and rear is 4.29 kg/mm. These springs are a direct bolt-on replacement for the factory springs and are designed to work with OEM struts and shocks without modification. Post-installation wheel alignment is strongly recommended. Backed by RS-R's 3-year / 36,000-mile warranty.