Bred in the race lab but refined for the street, the Dinan Adjustable Coilover System for the BMW F90 M5 retains the factory electronic shocks while replacing the springs with a more aggressive, performance-optimized formula. Dinan also converts the rear from the stock progressive-rate springs to a more predictable linear-rate design, reducing body roll without compromising compliance. The system allows up to 2" of drop in front and 2-1/8" in the rear, though Dinan recommends 1" front and 1-1/8" rear to maintain the civilized ride quality the M5 is built for.
Threaded collars allow precise ride height adjustment front and rear. Suspension packers are included to fine-tune bump stop clearance for your preferred balance of handling and comfort. Components are machined from 6061-T6 aluminum and black anodized.
Dinan F90 M5 Adjustable Coilover System Features:
+ Retains factory electronic shocks — Dinan replaces springs only
+ Spring rates 20% stiffer front, 15% stiffer rear
+ Rear converted from progressive to linear rate for improved predictability
+ Up to 2" drop front, 2-1/8" rear (Dinan recommended: 1" front, 1-1/8" rear)
+ Threaded collars for precise front and rear ride height adjustment
+ Progressive bump stops and suspension packers included
+ Helper springs maintain proper operation under droop conditions
+ Components machined from 6061-T6 aluminum, black anodized
+ Stock upper spring mounts retained for quiet operation
+ Substantial reduction in body roll
