Dinan Supplemental Ride Quality & Handling Kit for BMW E90 E92 E93 325i 328i 330i 335i

Dinan's supplemental ride quality and handling kit (D193-9001) is the bump-stop package meant to go with Dinan springs on rear-wheel-drive E90, E92, and E93 3 Series cars. Shorter springs alone cut the distance the suspension can travel before it runs out of room. This kit replaces the stock bump stops with progressive-rate pieces tuned for those springs so the damper can use the travel that is left instead of slamming into a hard stop.

The kit includes four bump stops and the supporting hardware shown with the part. The stops use OE-quality material with a progressive rate, so they firm up as they compress rather than hitting all at once. That is how Dinan avoids the sudden bottoming that is common on a lowered car that still uses the factory stops, and how the spring rate stays predictable through the last part of the stroke. Dinan lists a 5.4-hour labor time when the kit is installed by itself; that time is negligible if the stops go on with the matching Dinan spring set.

Dinan titles the part for 2007-2013 328i and 335i cars and for 2006-2007 325i and 330i cars on the E90, E92, and E93 chassis. The US table below keeps those models and then cuts sedan years to the last US E90 model year (2011), while the E92 coupe and E93 convertible continue through 2013. Turner's application list for this part number matches those RWD sedan, coupe, and convertible rows, including both N54 and N55 335i engines. Dinan states the kit is not compatible with xDrive vehicles. It is also written as compatible with Dinan Koni rear shocks only (D190-0946). The 335is uses D193-9081, E90/E92/E93 M3 cars use D193-9031 or D193-9034 depending on the shocks, and 335i/335xi xDrive cars use D193-9041.

Emission code 5 applies; the kit does not change emissions equipment. Published package size is 9 x 8 x 6 inches at 2 pounds. Coverage follows Dinan's standard limited warranty: the remainder of the vehicle factory limited warranty (up to 4 years / 50,000 miles) or 2 years / unlimited miles, whichever is greater. The duplicate store pages for this part number, including the later DNN-prefixed listing, redirect here.

Features

• Supplemental ride quality and handling kit for RWD E90/E92/E93 325i, 328i, 330i, and 335i
• Four progressive-rate bump stops in OE-quality material, tuned for Dinan springs
• Helps restore compression travel on a lowered car and reduces sudden bottoming
• About 5.4 hours of labor by itself; negligible when installed with the matching Dinan spring set
• Not for xDrive, 335is, or M3 (those cars use other Dinan kits)

What's Included

• 4 bumpstops and other supporting hardware

Specifications

Questions about fitment? Call (310) 231-0292 or text (310) 886-3111.

Fitment Notes

• Rear-wheel-drive E90/E92/E93 cars only. Dinan states the kit is not compatible with xDrive.
• Compatible with Dinan Koni rear shocks only (D190-0946).
• 335is uses D193-9081. E9x M3 uses D193-9031 or D193-9034. 335i/335xi xDrive uses D193-9041.
• E91 wagons are not on Dinan's E90/E92/E93 list for this part.