ECS Tuning Front CSL Big Brake Kit 345x28mm for BMW E36 M3 & Z3 M - E46 M3 CSL 2-Piece 345mm Drilled/Slotted Rotors with Caliper Relocation Brackets

CSL-size 345 mm Two-Piece Front Brake Disc Conversion for BMW E36 M3 and Z3M

Transform the front end stopping performance of your BMW with this ECS Tuning CSL-spec 345x28 mm two-piece front disc setup and precision calliper adapters. This road and track upgrade delivers powerful, repeatable braking, sharper bite and vastly improved heat management while retaining your original front callipers, hoses and pad choice. Perfect for fast road, track day and spirited driving, this conversion brings CSL-level braking confidence to the E36 M3 and Z3M platform.

Why enthusiasts choose this upgrade

• CSL-size 345x28 mm lightweight two-piece discs for serious stopping power and fade resistance.
• Aluminium bell hats with high quality hard anodising for durability and corrosion protection.
• High carbon grey cast iron rings for stable friction, consistent pedal feel and long service life.
• Semi-floating architecture allows controlled expansion under temperature for reduced risk of distortion.
• Curved internal vanes accelerate airflow for superior cooling and faster heat rejection.
• Cross-drilled and grooved faces help clear gases, water and dust for a clean bite lap after lap.
• Chamfered holes and precision machined grooves designed to minimise cracking and noise.
• Caliper adapter brackets reposition your factory front callipers to suit the larger CSL diameter discs.
• Reduced unsprung and rotational mass compared to typical one-piece cast options for a more responsive front end.

Real-world results

Installed by us at MJ Modifications, this setup has impressed on fast road and track. Customers report stronger initial response, confident pedal modulation and excellent consistency under repeated heavy braking. Retaining OE callipers keeps running costs sensible with wide pad availability for road, track day and race compounds.

Fitment and compatibility

• BMW E36 M3 3.0 S50
• BMW E36 M3 3.2 S52
• BMW Z3 M Coupe 3.2 S52
• BMW Z3 M Coupe 3.2 S54
• BMW Z3 M Roadster 3.2 S52
• BMW Z3 M Roadster 3.2 S54

Wheel clearance

Works with most 18 inch wheels and selected 17 inch track-friendly designs. Always confirm clearance on your specific wheel and spacer setup before installation.

Installation made easy

Designed to use your original front callipers, standard brake lines and your preferred E36 M3 pad shape. If you would like professional fitting, MJ Modifications in Warwickshire can help. Request a fitting quote at info@mjmodifications.co.uk.

Search-friendly terms

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Choose this ECS Tuning CSL-size front disc conversion if you want serious braking performance with OEM serviceability, lighter rotating mass and outstanding heat control for your E36 M3 or Z3M.