ST Suspensions Lowering/Drop Springs Kit 40/30mm for BMW 3 Series E46 Saloon/Sedan (1998-2005) | Performance Sport Suspension Upgrade | Fits 320i 323i 325i 328i 330i 318d 320d | OEM+ Ride Height, Adaptive Damper Compatible

Transform the way your E46 drives and looks

Bring your BMW 3 Series E46 saloon to life with a performance spring set that delivers a purposeful 40 mm front and 30 mm rear drop. This ST sport spring upgrade sharpens steering response, reduces body roll and squat, and gives that OEM Plus stance while working seamlessly with factory dampers, including cars fitted with electronic or adaptive shock absorbers.

Developed specifically for the E46 saloon, these precision-wound coils use high quality chrome silicon steel with an epoxy coating for long-term durability in British weather. The vehicle-specific spring rates maintain day-to-day comfort yet add the grip, confidence and agility enthusiasts want on B-roads and motorways alike.

Vehicle compatibility

E46 3 Series saloon only. Production 02/1998 to 02/2005. Suits petrol and diesel models within the power and axle load limits below, including:

• 320i, 323i, 325i, 328i, 330i
• 318d, 320d
• Chassis code 346 L/C/R/K

Lowering and technical details

• Lowering front/rear: 40 mm / 30 mm
• Front axle load up to: 970 kg
• Rear axle load up to: 1100 kg
• Engine output range: 85 to 170 kW
• Suitable for vehicles with adaptive/electronic dampers
• Manufactured to OEM quality standards
• Chrome silicon steel construction, multiply tempered
• Epoxy coated for corrosion resistance
• Vehicle-specific spring rate for balanced ride and handling
• Partly tubed design where required by application

Why enthusiasts choose this spring kit

• Improves cornering, turn-in and stability without harshness
• Lower centre of gravity for a more planted feel
• Clean, even drop that complements factory or upgraded wheels
• Direct fit on standard suspension. No coilover conversion required

We have fitted these springs on customer E46 saloons and the feedback is consistent. Tighter body control, better response and a tidy ride height that looks right without rubbing. It is a proven upgrade for daily drivers and weekend cars alike.

Professional fitting available

Want it installed properly the first time? Book fitting with MJ Modifications in Warwickshire. Request a quote: info@mjmodifications.co.uk.

Popular search terms

BMW E46 lowering springs saloon, sport spring kit E46 sedan, 40 mm 30 mm drop springs, E46 suspension upgrade, E46 ride height reduction, BMW 3 Series handling upgrade, E46 adaptive damper compatible springs, chrome silicon coil springs for E46, BMW 320d 330i suspension springs, stance and handling upgrade for E46.