Enhance the performance and stance of your 2022+ Lexus IS 500 with Swift Spec-R Lowering Springs. Engineered as a performance-focused suspension upgrade, these springs sharpen cornering response, reduce body roll, and deliver a sportier, more aggressive look—while still maintaining the refined comfort expected from a Lexus.
Swift tunes the Spec-R specifically for the IS 500 platform, striking the perfect balance between street comfort and race-inspired handling.
Key Features & Benefits
Performance Improvements
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Enhanced steering precision and turn-in response
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Reduced squat, dive, and body roll
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Improved chassis balance during spirited driving
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Predictable, controlled ride quality
Ride Height Drop
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Front Drop: -1.0 in
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Rear Drop: -1.0 in
Creates a balanced, aggressive stance ideal for daily use and weekend driving.
Spring Rates
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Front: 6.5 kgf/mm
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Rear: 10.0 kgf/mm
Why Choose Swift Spec-R Springs
Swift’s Spec-R series is engineered for drivers who want sportier handling without compromising daily comfort. Manufactured from Swift’s proprietary H5S alloy, these springs are lighter, stronger, and more responsive than conventional coil steel.
What’s Included
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(2) Front Swift Spec-R Springs
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(2) Rear Swift Spec-R Springs
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Manufacturer documentation
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Swift warranty support
Fitment
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Lexus IS 500 (2022+)
Part Number
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4T921R
Shipping & Lead Times
Most Swift products ship within 1–3 business days. If the item is out of stock, standard Swift production and restock timelines apply. PMD will notify you immediately if extended delays occur.
Important Notes
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Professional installation recommended
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Alignment required after lowering
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Compatible with OEM shocks and many aftermarket dampers