SKU: ASTLS-14-341
AST 05/1986-05/1993 BMW 3 Series Lowering Springs - 40mm/40mm
AST lowering springs drop BMW E30 3 Series ride height by 40mm front and rear as a direct OEM replacement. Developed specifically for 1986-1993 BMW 3 Series models these springs lower the center of gravity for improved handling while retaining daily driving comfort. Crafted with progressive rates they balance performance gains and ride quality on the road or track.
Key Features
- 40mm Drop: Precise 40mm front and rear lowering enhances cornering stability and stance without sacrificing suspension travel
- Progressive Spring Design: Varying coil rates provide linear response for better control during aggressive driving and smooth compliance over bumps
- Premium Materials: High-tensile steel coiled on Wafios machines ensures durability and consistent performance under load
- Vehicle-Specific Engineering: Tailored fitment for E30 chassis maintains OEM geometry and alignment specs
- Lifetime Warranty: Guaranteed against breakage for long-term reliability and confidence
Product Notes
- Direct bolt-on replacement for stock springs no additional components required
- Inspect bushings and shocks during install for optimal results
- Special order item confirm stock before purchase
Installation Notes
- Professional installation recommended.
- Raise vehicle securely and support with jack stands before spring swap
- Compatible with OEM struts and mounts torque to factory specs
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1986-1987 | BMW | 325e | Sedan |
| 1987-1991 | BMW | 325i | Sedan |
| 1987-1991 | BMW | 325is | Hatchback |
| 1988-1991 | BMW | 325iC | Convertible |
| 1988-1991 | BMW | M3 | Coupe |
Why Choose AST?
- Proven across 3000 vehicle models from 1966 to 2023
- Focus on performance springs with real-world testing
- Precision manufacturing for exact fit and lasting strength
Frequently Asked Questions
-
Q: Will these fit my 1989 BMW 325i with stock suspension?
A: Yes direct replacement for 1987-1991 325i sedan maintains factory strut compatibility and alignment -
Q: What material are the springs made from?
A: High-tensile steel coiled on advanced Wafios machines for superior fatigue resistance and longevity -
Q: What does the lifetime warranty cover?
A: Protection against spring breakage under normal use contact manufacturer for claims process
Shipping & Handling
- Method: UPS Ground or FedEx
- Availability: In stock - ships same or next business day
- Packaging: Secure box 18 x 7 x 7 inches
- Weight: 11 lbs
AST
AST Suspension builds some of the most precisely engineered dampers available for performance and competition vehicles. Whether you're building a dedicated track car, a dual-purpose street/track machine, or a show car that needs dialed-in stance and handling, AST's lineup of coilovers and shock absorbers delivers the adjustability and build quality serious drivers demand.Popular UpgradesThe AST 4100 series coilovers are a favorite for street-driven enthusiasts wanting meaningful performance gains without sacrificing ride quality. The 4150 and 5100 series step up to more aggressive damping curves suited to autocross and circuit work. AST also offers remote reservoir setups and custom valving for purpose-built race applications where every tenth matters.Are AST coilovers adjustable for ride height?Yes. AST coilovers feature threaded spring perch adjustment, allowing you to dial in ride height independently of shock travel. Many models also offer rebound and compression damping adjustm...
View AST Products
Lowering Springs
Shop lowering springs at Black Ops Auto Works for improved stance, reduced wheel gap, sharper handling, better road feel, and a more aggressive performance look. This collection includes sport springs, performance lowering springs, SUV lowering springs, Pro-Kit springs, Spec-R springs, Super Sport springs, OE sport springs, lowering coil kits, front lowering springs, rear lowering springs, and vehicle-specific suspension upgrades for cars, trucks, SUVs, EVs, muscle cars, and performance platforms. Use this Lowering Springs collection to find the right spring setup by vehicle platform, drop amount, brand, suspension type, and driving goal. Lowering springs are a popular suspension upgrade for drivers who want a lower stance, improved cornering stability, reduced body roll, better wheel fitment, and a cleaner appearance without moving to a full coilover system. Shop Lowering Springs by Category Black Ops Auto Works carries lowering springs and performance spring upgrades across key ca...
View Lowering Springs Products
Suspension
Aftermarket suspension systems improve handling, ride quality, and ride height adjustment beyond what the factory suspension provides. From lowering springs and coilover kits for sport handling to lift kits and leveling kits for truck and SUV off-road capability, quality suspension components transform how a vehicle rides and handles. Popular Suspension Upgrades Popular suspension upgrades include coilover kits for adjustable ride height and damping, sport lowering springs for improved handling and reduced body roll, performance shock absorbers and strut assemblies, sway bar and end link upgrade kits, subframe brace kits, and complete suspension packages for lifted trucks and off-road SUVs. Alignment kits including camber bolts and camber arms are also frequently ordered after ride height changes. What is the difference between coilovers and lowering springs? Coilovers are complete shock and spring assemblies with adjustable ride height set by threading the spring perch on the shock...
View Suspension Products


