Dinan Supplemental Ride Quality & Handling Kit - 2018-2026 BMW 330i/M340i/M440i/X3 M40i/X4 M40i/X5M/X6M

OVERVIEW

To fully realize the benefits of a Dinan Performance Spring Set, pair it with the Supplemental Ride Quality & Handling Kit. The kit adds tuned, progressive-rate bump stops that maximize suspension travel on a lowered car — negating the sudden "bottoming out" that commonly comes with lowering, while optimizing the effective spring rate for added mechanical grip and cornering power. The result is a car that rides better and handles harder than a spring set alone. Designed to be installed alongside the corresponding Dinan spring set.

SPECS

• Tuned, progressive-rate bump stops
• Preserves full suspension compression travel on lowered vehicles
• Improves ride quality and adds mechanical grip vs. springs alone
• Designed to pair with the matching Dinan Performance Spring Set

PARTS INCLUDED

• Progressive-rate bump stops (front and rear as applicable)
• Associated hardware

TECH RESOURCES

• Installation Instructions (PDF)
• Required companion for best results — pair with the Dinan Performance Spring Set (M340i/M440i) or the Dinan Performance Spring Set (X3/X4 M40i)
• Install labor is negligible when done at the same time as the corresponding Dinan Spring Set.

PART NUMBER

• D193-0121

VEHICLE APPLICATIONS

Also fits the B48 330i (xDrive); confirm exact model years against Dinan's application guide.