Dinan Lightweight Tubular Anti-Roll Bar Set – BMW M5 / M6

OVERVIEW

Almost every street car leaves the factory with anti-roll bars, but they are tuned soft for maximum comfort. An anti-roll bar does exactly what its name says: it reduces body roll. Every Dinan tuned anti-roll bar is built and calibrated specifically for the BMW chassis it fits. Cutting body roll keeps the car more level than stock while still allowing just enough roll to improve mechanical grip, which gives the driver a far more planted and confident feeling in every corner.

The front bar in this set is a 28 mm lightweight tubular adjustable unit, 44% lighter than a solid bar of comparable stiffness and adjustable from 35% to 53% stiffer than stock. It is a two hole bar that can be mounted in three different positions, and it comes with left and right hand threaded end links for easy length adjustment.

The rear bar is a 22 mm lightweight tubular adjustable unit, 29% lighter than a solid bar of comparable stiffness and adjustable from 39% to 72% stiffer than stock. It is a three hole bar that can be mounted in three different positions and uses the stock BMW end links.

SPECS

• Front bar diameter: 28 mm (stock bar is 24.5 mm)
• Rear bar diameter: 22 mm (stock bar is 21.5 mm)
• Front adjustment range: 35% to 53% stiffer than stock, two hole bar with three possible mounting positions
• Rear adjustment range: 39% to 72% stiffer than stock, three hole bar with three possible mounting positions
• Front weight saving: 44% lighter than a solid bar of comparable stiffness
• Rear weight saving: 29% lighter than a solid bar of comparable stiffness
• Construction: tubular (hollow)
• End links: adjustable length, left and right hand threaded, supplied for the front; the rear uses the stock BMW end links
• Dinan published install time: 3.2 hours
• Emissions: Dinan publishes no CARB Executive Order number for this part.
• Warranty: Dinan covers the part for the remaining term of the vehicle manufacturer's new car limited warranty (typically 4 years / 50,000 miles) if the vehicle is still covered, otherwise 2 years / unlimited mileage from date of purchase. Maintenance and wear items, improper installation, racing use and competitive event damage are excluded.

PARTS INCLUDED

• Front kit (D133-0540C): 1 x 28 mm tubular adjustable front anti-roll bar (D122-0540), 2 x bushings, 2 x bushing brackets, 2 x Zerk fittings, urethane packet, adjustable end link assemblies and 4 x hex nuts.
• Rear kit (D133-0550): 1 x 22 mm tubular adjustable rear anti-roll bar (D122-0550) and hardware kit.

TECH RESOURCES

Additional Parts Required

• None. Dinan specifies no additional hardware for this part — the front kit ships with its own adjustable end links, bushings and brackets, and the rear bar reuses the stock BMW end links.
• Optional pairing: Dinan High Performance Adjustable Coil-Over Suspension System for the same platform.
• Installer-supplied tools: vehicle lift or jack stands, standard metric hand tools, torque wrench and a grease gun for the Zerk fittings.

Installation

• Dinan D120-0560 Anti-Roll Bar Set installation instructions, front D120-0540 and rear D120-0550 (PDF)

Notes

• Years above follow Dinan's catalog listing for the D120-0560 set. Dinan's installation instructions cite narrower build ranges for the individual bars (front 2012–2016, M6 Gran Coupe 2013–2016; rear 2012–2014, M6 Gran Coupe 2013–2014). Confirm fitment for your build date with Speed Logic before ordering.

PART NUMBER

• D120-0560 — front and rear set
• D120-0540 — front anti-roll bar (component number)
• D120-0550 — rear anti-roll bar (component number)

VEHICLE APPLICATIONS