ECS Tuning 2-Piece Lightweight Rear Brake Discs/Rotors 350mm (350x24), Semi-Floating, Drilled & Grooved - BMW 1M E82, E90 E92 E93 M3, E90 E91 E92 E93 3 Series M Performance 350mm Rear Brake Upgrade - Pair

ECS Tuning two-piece rear brake discs. 350 x 24 mm. Semi floating. Drilled and grooved. Built for fast road and track day performance on BMW 1M and E9X platform.

Transform your stopping power with a motorsport-grade rear axle set that sheds mass, dumps heat quickly and delivers repeatable braking lap after lap. These precision machined rear discs use a lightweight anodised aluminium bell mated to a heat-treated grey cast iron friction ring for outstanding stability under hard use. Less unsprung mass means sharper turn-in and a more responsive chassis. Reduced rotational mass can help the car accelerate and decelerate more cleanly. On our customer builds these have proven superb on spirited road drives and at track days, with excellent pedal feel and fade resistance.

• Two-piece semi floating design for improved thermal management and resistance to distortion under high temperatures
• Lightweight aluminium hat, hard anodised in black for durability and corrosion resistance
• Heat-treated grey cast iron rings for consistent friction and long life
• Cross drilled and grooved faces to clear gas, water and dust for crisp bite and dependable wet weather performance
• Optimised internal venting and coated non-friction areas to help fight rust and road salt
• Direct rear axle upgrade in 350 mm x 24 mm sizing, supplied as a matched pair
• Includes stainless rotor set screws to replace rusty factory hardware
• Weight saving versus OE E9X M3 rear discs, approximately 0.18 kg per corner, reducing unsprung and rotational mass
• Ground braking surfaces for quick, even pad bedding and smooth operation

Why this upgrade

If you are chasing stronger, more consistent braking on a BMW 1M or M3, or building an E9X 3 Series with an M Performance rear brake conversion, these ECS two-piece rear discs are a proven solution. They cope with repeated high-energy stops, resist fade, and help minimise judder. Ideal for fast road, Nürburgring trips and track work. A superb match with performance pads and quality fluid.

Fitment

Rear axle. 350 mm x 24 mm. Pair.

• BMW E82 1M Coupe
• BMW E90 E92 E93 M3
• BMW E90 E91 E92 E93 3 Series models including 325i 328i 330i 335i 335d when running the M Performance rear brake conversion or equivalent 350 mm setup

Unsure about compatibility with your 328i, 330i, 335i or 335d. Get in touch and we will confirm.

Installation and support

We recommend professional fitting. MJ Modifications in Warwickshire can supply and install. Request a quote at info@mjmodifications.co.uk.

Search-friendly terms customers use for this item

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