AST 90-99 BMW 8-Series 840Ci (E31) Lowering Springs

This AST Suspension 90-99 BMW 8-Series 840Ci (E31) Lowering Springs is a vehicle-specific lowering spring set selected by exact part number, chassis, drivetrain, body style, suspension configuration, and stated front and rear drop. Confirm every application note before ordering.

Key Features

• Progressive Spring Design: Balances drop height of 35mm front and 40mm rear with controlled rebound for improved grip and ride quality.
• Direct OEM Replacement: Bolt-on installation using factory mounts with no modifications required.
• Pair includes front and rear springs only top hats or perches not included.
• Yes fits all 1993-1997 BMW 850Ci models as direct OEM replacement with 35mm front 40mm rear drop.
• High-tensile chrome-silicon steel with progressive rates starting linear then increasing for comfort and control.
• Special order item allows 5-7 business day lead time from manufacturer.

Fitment

Specifications

What’s Included

One new AST Suspension product in the exact part number, dimensions, rate, adjustment specification, and quantity identified on this page. Springs, dampers, top mounts, reservoirs, adjusters, links, tools, lines, fittings, and hardware are included only when expressly stated for this exact configuration.

About AST Suspension

AST Suspension develops performance springs, dampers, coilovers, top mounts, and motorsport suspension components. Vehicle fitment, dimensions, rates, adjustment functions, and included components remain exact-part specific.

Related Parts

• Shop the complete AST Suspension collection
• Shop suspension components
• AST 1993-12/1999 BMW 8 Lowering Springs – 35mm/35mm
• AST 00-09/06 BMW M3 Lowering Springs – 30mm/20mm
• AST 01/1985-05/1995 Mercedes-Benz 200-Series Lowering Springs – 40mm/40mm

Frequently Asked Questions

How do I confirm these springs fit my vehicle?
Match the exact year, make, model, chassis, drivetrain, body style, engine, factory suspension, axle-load notes, and AST part number.

Will I need an alignment after installing lowering springs?
Yes. Measure ride height after the springs settle, then perform a complete alignment and verify tire, wheel, brake-line, and suspension clearance.

Can these springs be used with factory dampers?
Only when the exact AST application permits it. Check damper condition, available travel, bump-stop requirements, and every product-specific suspension note.

Is the advertised drop exact on every vehicle?
The stated drop is a target for the listed configuration. Actual ride height can vary with equipment, vehicle weight, spring isolators, damper condition, and prior suspension changes.

Installation Instructions

1. Confirm the exact AST part number, complete application or dimensional specification, included components, and current instructions before disassembly.
2. Support the vehicle at approved points and record the original ride height, alignment, suspension orientation, and adjustment settings.
3. Install components in the specified position and sequence using correct spring-compression, torque, preload, ride-height, and damper setup procedures.
4. Verify full suspension and steering travel, tire and wheel clearance, brake-line routing, fastener torque, and damper operation.
5. Settle the suspension, measure final ride height, complete a professional alignment, and recheck the installation after the initial driving cycles.