AST_Suspension_Lowering_Springs_20mm_20mm_TUV_1986_1993_BMW_4_Series_420i_428i_430i_420D_425D_Gran_Coupe_RWD_E30

AST Suspension Lowering Springs (20mm/20mm TUV) – 1986-1993 BMW 4 Series 420i/428i/430i/420D/425D Gran Coupe RWD (E30)

Category: SKU: LCK935071

$95.14 $317.12

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AST Lowering Springs for the 1986-1993 BMW 4 Series 420i/428i/430i/420D/425D Gran Coupe RWD (E30) are manufactured from a premium high tensile chromium-silicone wire which is handpicked by AST engineers for its quality and metal consistency.

Each spring is cold wound and then heat treated to increase hardness and reduce internal stresses present after winding. Each spring is then individually shot peened, phosphate treated and then powder coated to outlast even the life of the vehicle.

Standard Features

  • Progressive rates on most vehicles.
  • EDC Compatible (if applicable to vehicle)
  • Each spring is blocked and computer tested prior to shipping, which reduces any settling once installed on the vehicle.
  • Lifetime warranty on breaking.
  • Most of our spring applications are TUV Certified and certificates can be provided upon request.
    • Specifications
    Part Number ASTLS-14-341
    Part Name Lowering Spring
    Vehicle 1986-1993 BMW 4 Series 420i/428i/430i/420D/425D Gran Coupe RWD
    Chassis Code E30
    Ride-Height Adjustable No
    Spring Type Progressive
    Approximate Drop – Front 20mm
    Approximate Drop – Rear 20mm
    TUV Certified Yes
    Quantity Set of 4
    Notes
  • Not suitable for 4WD (four-wheel drive) cars.
  • About 10mm less lowering for vehicles with M-sport suspension.
  • About 10mm less lowering for vehicles with Adaptine M-sport suspension.
    		•
    Vehicle Fitment
  • 1986 BMW 4 Series 420i/428i/430i/420D/425D Gran Coupe RWD (E30)
  • 1987 BMW 4 Series 420i/428i/430i/420D/425D Gran Coupe RWD (E30)
  • 1988 BMW 4 Series 420i/428i/430i/420D/425D Gran Coupe RWD (E30)
  • 1989 BMW 4 Series 420i/428i/430i/420D/425D Gran Coupe RWD (E30)
  • 1990 BMW 4 Series 420i/428i/430i/420D/425D Gran Coupe RWD (E30)
  • 1991 BMW 4 Series 420i/428i/430i/420D/425D Gran Coupe RWD (E30)
  • 1992 BMW 4 Series 420i/428i/430i/420D/425D Gran Coupe RWD (E30)
  • 1993 BMW 4 Series 420i/428i/430i/420D/425D Gran Coupe RWD (E30)

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