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AST AST 13-20 BMW 435i/440i/430D (F32) Lowering Springs - RWD
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AST 13-20 BMW 435i/440i/430D (F32) Lowering Springs - RWD

AST
ASTASTLS-18-060
astASTLS-18-060
Lowering Springs
Out of stock
$ 320.25 $ 288.23

SKU: ASTLS-18-060 | UPC: astASTLS-18-060

AST 13-20 BMW 435i/440i/430D (F32) Lowering Springs - RWD

AST Lowering Springs deliver a precise drop for 2013-2020 BMW 4 Series F32 RWD models including 435i 440i and 430d. These direct OEM replacements lower the center of gravity for sharper handling and better road grip without sacrificing daily comfort. Crafted with progressive rates they balance stance performance and ride quality on street or track.

Key Features

  • Vehicle-Specific Engineering: Developed exclusively for BMW F32 RWD models ensuring perfect fit and OEM-like function with 30mm front and 35mm rear drop.
  • Progressive Spring Design: Variable rates provide firm support under load while absorbing bumps for responsive control and planted cornering.
  • Premium Materials: High-tensile chrome-silicon steel coiled on Wafios machines for durability corrosion resistance and consistent performance.
  • Broad Compatibility: Proven across 3000+ vehicle models from 1966 to 2023 fitting diverse suspensions with exact specifications.
  • Lifetime Warranty: Guaranteed against breakage and sagging for long-term reliability and confidence in every drive.

Product Notes

  • Direct replacement for OEM springs no modifications required.
  • Special order item allow 3-5 business days for processing.
  • Pair with OEM or aftermarket shocks for best results.

Installation Notes

  • Professional installation recommended.
  • Compress springs safely using spring compressor tool.
  • Fully compatible with factory strut mounts and hardware.

This Part Fits

Year Make Model Submodel
2013-2017 BMW 428i F32 Coupe RWD
2014-2016 BMW 435i F32 Coupe RWD
2015-2017 BMW M435i F32 Coupe RWD
2016-2020 BMW 440i F32 Coupe RWD
2017-2020 BMW 430i F32 Coupe RWD
2014-2017 BMW 430d F32 Coupe RWD

Why Choose AST?

  • Decades of suspension expertise from Netherlands-based engineering.
  • Springs built to exact OEM tolerances for seamless integration.
  • Test-proven design handles track days and daily commutes.

Frequently Asked Questions

  • Q: What drop height do these springs provide on BMW F32?
    A: 30mm front and 35mm rear for improved stance and aerodynamics without harshness.
  • Q: What material are AST springs made from?
    A: High-tensile chrome-silicon steel with shot-peening and preset processes for fatigue resistance.
  • Q: Does the lifetime warranty cover normal use?
    A: Yes covers manufacturing defects breakage and sagging under standard driving conditions.

Shipping & Handling

  • Method: UPS Ground or FedEx
  • Availability: In stock - ships same or next business day
  • Packaging: Secure manufacturer box 18 x 8 x 8 inches
  • Weight: 23 lbs

Request For Information

Have questions about AST 13-20 BMW 435i/440i/430D (F32) Lowering Springs - RWD? Fill out the form below and we'll get back to you by the next business day.
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