AST Lowering Springs For BMW 45664 730i/735i (not for 740i) 09/1986-05/1994, Front 35 , Rear 35

The AST Lowering Springs for BMW 45664 730i/735i (excluding 740i) from 09/1986 to 05/1994 are engineered to provide a precise lowering of your vehicle's center of gravity by 35 mm at both the front and rear. Manufactured using advanced cold-coiling technology on premium Wafios coiling machines, these springs ensure superior quality and durability. Designed as a direct replacement for OEM springs, they maintain a high level of ride comfort while enhancing handling and stability.

Crafted from high-grade materials, the AST Lowering Springs feature a progressive spring rate that balances performance improvements with everyday usability. This makes them ideal for drivers seeking improved cornering and a sportier stance without compromising the smoothness expected from factory suspension components. The extensive development process covers over 2500 vehicle models from 1966 onward, reflecting the brand's commitment to precision and reliability.

These springs come with a lifetime warranty against breakage, underscoring their robustness and the manufacturer's confidence in product longevity. Installation is straightforward, as the springs are designed to fit seamlessly with your vehicle's existing suspension setup, provided your car does not have level adjustment or automatic/electronic shock absorbing regulation systems.

Lowering Specifications

• Front lowering: 35 mm
• Rear lowering: 35 mm
• Cold-coiled on Wafios machines for consistent quality
• Progressive spring rate for balanced performance and comfort

Compatibility

• BMW 45664 730i/735i models from 09/1986 to 05/1994
• Not compatible with 740i models
• Not suitable for vehicles with level adjustment systems
• Not compatible with automatic or electronic shock absorbing regulation
• Excludes M-models, S4 models, and cars equipped with Audi sport chassis

Choose AST Lowering Springs to enhance your BMW’s driving dynamics while retaining the comfort and reliability expected from high-standard automotive components. Their precise engineering and rigorous quality control make them a trusted choice for discerning drivers seeking performance upgrades that meet professional standards.

Unless explicitly stated otherwise, all products sold by R44 Performance Limited are designated RACE ONLY and are solely for competition or off-road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, may violate local, state, and Federal laws. R44 Performance Limited does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the consumer.

It is the responsibility of the customer to check with all federal, state local and environmental laws before ordering and installing a product. R44 Performance Limited is not responsible for any fees, fines or costs that a customer may incur as a result of failing to check with federal, state, local or environmental laws before ordering and installing a product.

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All of our products come with a standard warranty of 1-3 years. This is dependant on the type of product however. For more details please see our warranty page here.