BMW M4 Sway Bars - Front + Rear - Dinan - Adjustable - 2021–2026. Dinan’s chassis‑specific anti‑roll bar set for the G82/G83 M4 (RWD) sharpens steering response and curbs body roll while preserving everyday comfort.

Built from high‑tensile, tubular alloy steel, these bars keep the M4 flatter in corners for added mechanical grip. The front is 28 mm (vs. 23.5 mm stock) and the rear 26 mm (vs. 21.9 mm), delivering about 18% front and 35–48% rear stiffness increases. The rear bar has 2‑hole adjustability to fine‑tune balance for street or track. Includes polyurethane bushings and grease. Subframe drop is required; professional installation and an alignment are recommended.

Features

• Application: 2021–2026 BMW M4 G82/G83 (RWD)
• Sizes: Front 28 mm, Rear 26 mm
• Tubular (hollow) high‑tensile alloy steel construction
• Stiffness increase: approx. +18% front, +35–48% rear
• Rear bar: 2‑hole adjustable
• Includes polyurethane bushings and grease

Have questions or want guidance on setup? Call our teams in Austin, Texas and the Los Angeles, California area for installation and customization services: 512-982-9393 (TX), 562-981-6800 (CA).

If you’re considering multiple items, contact us for shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov