-15%
Click to zoom in
This AST Suspension 05/1986-05/1993 BMW 3/R Lowering Springs - 55mm/35mm 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
- Precise Drop Specs: 55mm front 35mm rear lowering reduces stance for better aerodynamics and cornering grip without sacrificing daily drivability
- Progressive Spring Design: Variable rates provide linear response absorbing bumps smoothly while firming up under load for enhanced control
- Vehicle-Specific Engineering: Tailored for 1986-1993 BMW E30 chassis ensuring perfect fit and OEM-like alignment retention
- Premium Build Quality: High-strength steel coiled on Wafios machines for consistent durability and fatigue resistance
- Avoid extreme track use without upgraded dampers for maximum spring life
Fitment
| Years | Make | Model | Application |
|---|---|---|---|
| 1986-1987 | BMW | 325e | Base |
| 1987-1991 | BMW | 325i | Base |
| 1991-1993 | BMW | 325iC | Base |
| 1988-1991 | BMW | 325iX | Base |
| 1987-1991 | BMW | 325is | Base |
| 1988-1991 | BMW | M3 | Base |
Specifications
| Brand | AST Suspension |
|---|---|
| Manufacturer Part Number | ASTLS-14-342 |
| Product Type | Lowering Springs |
| Condition | New |
| Configuration | 05/1986-05/1993 BMW 3/R Lowering Springs - 55mm/35mm |
| Precise Drop Specs | 55mm front 35mm rear lowering reduces stance for better aerodynamics and cornering grip without sacrificing daily drivability |
| Progressive Spring Design | Variable rates provide linear response absorbing bumps smoothly while firming up under load for enhanced control |
| Key Features Precise Drop Specs | 55mm front 35mm rear lowering reduces stance for better aerodynamics and cornering grip without sacrificing daily drivability |
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 05/1986-05/1993 BMW 3/R Lowering Springs - 40mm/40mm
- AST 11/1982-12/1990 BMW 44929 Lowering Springs - 40mm/40mm
- AST 11/1982-12/1990 BMW 44929 Lowering Springs - 60mm/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
- Confirm the exact AST part number, complete application or dimensional specification, included components, and current instructions before disassembly.
- Support the vehicle at approved points and record the original ride height, alignment, suspension orientation, and adjustment settings.
- Install components in the specified position and sequence using correct spring-compression, torque, preload, ride-height, and damper setup procedures.
- Verify full suspension and steering travel, tire and wheel clearance, brake-line routing, fastener torque, and damper operation.
- Settle the suspension, measure final ride height, complete a professional alignment, and recheck the installation after the initial driving cycles.
AST
Shop AST Suspension lowering springs, adjustable lowering spring kits, street and track coilovers, race springs, top mounts, adjustment tools, and motorsport air-jack components by exact manufacturer part number. Match vehicle-specific products by year, make, model, chassis, drivetrain, body style, factory suspension, and every application note. Select universal motorsport components by dimensions, rate, capacity, and interface. Lowering Springs AST lowering springs are application specific. Confirm the exact vehicle and suspension configuration together with the stated front and rear drop, spring design, damper compatibility, axle-load requirements, and included quantity. Adjustable Lowering Spring Kits Adjustable kits use part-specific spring and perch arrangements to fine-tune ride height within their stated range. Verify chassis, drivetrain, body style, factory damper or air-suspension setup, adjustment range, clearance, and alignment requirements. Coilovers and Dampers AST stre...
View AST Products
Lowering Springs
Shop lowering springs from Eibach, H&R, Swift Springs, RS-R, UMI Performance, MaxTrac, aFe Control, Ford Racing, Whiteline, Vogtland, ST Suspensions, Belltech, Skyjacker, and Black Ops Auto Works. Find sport lowering springs, Pro-Kit springs, Sportline springs, Spec-R springs, Super Sport springs, Race springs, Down Sus springs, adjustable lowering springs, SUV lowering springs, truck lowering springs, and EV lowering springs for street cars, muscle cars, sport compacts, European performance platforms, SUVs, trucks, and modern EV builds. Lowering springs are the simplest way to drop a vehicle’s ride height. They keep the OE shocks, upper mounts, and suspension geometry components in place and swap only the coil springs for shorter, progressively- or linearly-wound performance springs. Shop by vehicle year, make, model, trim, drop height, spring type (progressive vs linear), and application (street, show, mild-handling, SUV, EV, truck). Lowering springs are the correct choice...
View Lowering Springs Products
Suspension
Suspension parts and complete kits for cars, trucks, SUVs, Jeeps, and off-road builds are stocked at Black Ops Auto Works. Shop coilovers, lowering springs, lift kits, leveling kits, shocks and struts, sway bars, control arms, tie rods, ball joints, bushings, chassis bracing, alignment hardware, air suspension, and complete stage kits from Bilstein, KW, Ohlins, Fox, KING, ICON, BC Racing, Silvers, Eibach, H&R, Swift Springs, Whiteline, Energy Suspension, Moog, SPC Performance, Rough Country, ReadyLIFT, BDS, Skyjacker, Air Lift, Firestone, and Black Ops Auto Works. Start with a matched shock and spring package or a full coilover kit, then layer in sway bars, chassis bracing, and camber adjustment hardware. Every part is filterable by year, make, model, trim, and drivetrain to confirm fitment before ordering. What This Category Covers Suspension is the highest-leverage handling upgrade on any vehicle. A properly matched shock, spring, and sway bar package produces measurable i...
View Suspension Products