RS-R T581D Down Sus Lowering Springs for 2017-2022 Toyota Prius Prime

Vehicle Fitment

• 2017-2022 Toyota Prius Prime (Plug-In Hybrid), Chassis Code: ZVW52

Fitment Notes

• Prius Prime (plug-in hybrid) specific - confirm chassis code ZVW52 before ordering, as the standard Prius may use a different RS-R part number
• Designed to work with stock shocks - no strut or shock replacement required for installation
• Vehicle realignment is recommended after installation; professional installation is recommended
• Not an emissions-related item

Features

• Provides a mild drop and improved handling to reduce fender-to-wheel gap
• Engineered specifically around the Prius Prime's factory suspension geometry, shock damping, and ride height, accounting for the plug-in hybrid platform's characteristics
• True Japanese-manufactured lowering springs from one of Japan's leading aftermarket spring makers
• Balances a lowered stance and sharper handling with retained everyday ride comfort
• Direct bolt-on replacement for the factory springs; no cutting or modification required
• Includes all four springs (front pair and rear pair) for a complete installation

Specifications

• Part Number: T581D
• Brand: RS-R
• Country of Manufacture: Japan
• Front Lowering: -20mm to -25mm (-0.8in to -1.0in)
• Rear Lowering: -15mm to -20mm (-0.6in to -0.8in)
• Front Spring Rate: 2.76 kg/mm
• Rear Spring Rate: 5.10 kg/mm
• Warranty: 3 Years / 36,000 Miles

Included Components

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

Product Description

The RS-R T581D Down Sus lowering springs are engineered specifically for the 2017-2022 Toyota Prius Prime plug-in hybrid, delivering a -20mm to -25mm (-0.8in to -1.0in) drop up front and a -15mm to -20mm (-0.6in to -0.8in) drop at the rear. RS-R tunes the drop and spring rate around the Prius Prime's specific factory suspension geometry and shock damping rather than applying a generic figure across unrelated models.

A front spring rate of 2.76 kg/mm pairs with a noticeably firmer 5.10 kg/mm rear rate, a combination tuned to sharpen handling and reduce body roll while keeping the ride comfortable enough for daily driving. These are true Japanese-manufactured springs, designed to work with the factory shocks - no strut or shock replacement is needed for installation, keeping this a straightforward bolt-on upgrade.

This kit includes all four springs - front pair and rear pair - for a complete installation, and is backed by RS-R's 3-year, 36,000-mile warranty. Vehicle realignment is recommended after installation, and professional installation by a qualified technician is strongly recommended to ensure proper fitment and to preserve warranty coverage.