Dinan Lightweight Tubular Anti-Roll Bars (D120-0595) – BMW 2 / 3 / 4 Series xDrive (F2x / F3x)

OVERVIEW

Almost every modern car leaves the factory with anti-roll bars, but they are deliberately soft in the interest of comfort. Every Dinan anti-roll bar is built and tuned for a specific BMW chassis. Keeping the car flatter through a corner — while still allowing just enough roll — improves mechanical grip and gives the driver a much more planted, confident feeling.

The 25mm front bar for xDrive cars is adjustable across three mounting positions and runs from 45% to 93% stiffer than the stock front bar depending on which model it is fitted to. The 19mm rear bar is also a three-position bar and is adjustable from 359% to 474% stiffer than the 12mm factory rear bar. Both bars are tubular, so the added stiffness comes with a weight saving rather than a weight penalty, and both use the stock BMW end links.

SPECS

• Front bar: 25mm tubular, three-hole adjustable (stock front bar is 22.5–25mm depending on application)
• Rear bar: 19mm tubular, three-hole adjustable (stock rear bar is 12mm)
• Front adjustment on M235i/M240i (23.6mm stock bar): 45% to 74% stiffer than stock
• Front adjustment on 228i/230i/320i/328i/330i/428i/430i (22.5mm stock bar): 61% to 93% stiffer than stock
• Front adjustment on 335i/340i/435i/440i (22.5mm stock bar): 54% to 84% stiffer than stock
• Rear adjustment: 359% to 474% stiffer than the stock rear bar
• Tubular (hollow) construction; three mounting positions per bar
• Uses the stock BMW end links
• Dinan states the set is not compatible with RWD vehicles or with the wagon and Gran Turismo body styles
• Dinan published installation labor: 7.4 hours
• Kit weight: 30 lb
• Dinan warranty: on a vehicle still covered by the BMW new-car limited warranty (4 years/50,000 miles), Dinan products are warranted for the remaining term of that warranty; otherwise Dinan Performance Products carry a 2-year, unlimited-mileage warranty from the date of original purchase. Wear and maintenance items — friction materials, filters, fluids, spark plugs, drive belts and bulbs — are excluded.

PARTS INCLUDED

• 1 × D122-0587 front anti-roll bar
• 1 × D133-0587 front hardware kit
• 1 × D122-0590 rear anti-roll bar
• 1 × D133-0590 rear hardware kit

TECH RESOURCES

Additional Parts Required

• None. Dinan specifies no additional hardware for this part — front and rear hardware kits are supplied and the factory BMW end links are reused.
• Installer-supplied tools: standard hand tools, torque wrench and a vehicle lift or jack stands.

Installation

• Dinan installation instructions INS133-0587 (front bar) and INS133-0590 (rear bar): Download PDF

Notes

• The year ranges shown are the model-family ranges Dinan publishes for D120-0595 (2012–2018 for the 3-Series, 2014–2020 for the 4-Series and 2014–2021 for the 2-Series); an individual model was not offered in every year of its family range. This is an xDrive-only set — Dinan states it does not fit RWD cars or the wagon and Gran Turismo body styles. Confirm your exact model year with Speed Logic.

PART NUMBER

• D120-0595 — front and rear anti-roll bar set
• D120-0587 — front bar assembly (as identified in the Dinan installation document)
• D120-0590 — rear bar assembly (as identified in the Dinan installation document)

VEHICLE APPLICATIONS