Tarox Front Brake Discs (Rotors) for BMW 4 Series 420i M Sport incl xDrive, 340mm Ventilated, Grooved/Drilled Slotted - G88 F2000 Sport Japan Performance Upgrade, Direct Fit Replacement, Fast Road/Track Day

Premium front rotors for BMW 4 Series 420i M Sport including xDrive, 340 mm ventilated

Dial in serious stopping power and consistency with Tarox engineered front rotors for the BMW 4 Series 420i M Sport including xDrive running the 340 mm front set up. Expect crisp pedal response, excellent thermal management and rock solid performance for spirited road driving and occasional track days, all while retaining a genuine direct fit replacement feel.

We use these on our own cars at MJ Modifications and customer feedback has been outstanding. Drivers report stronger bite, confident repeat stops and far less fade on fast A-road runs or heavy motorway braking. If you want an OEM-plus braking upgrade that you can feel from the first press, this is it.

Highlights

• Location: front axle fitment for BMW 4 Series 420i M Sport including xDrive using 340 mm fronts
• Size: 340 mm diameter, ventilated design for improved cooling
• Direct replacement fit with OE-style compatibility

Tarox build quality

• Heat treated after each machining stage for strength and longevity
• CNC precision machining for accuracy and balance
• Individually surface ground by a specialist operator to a final tolerance approaching 0.015 mm for a perfectly flat braking face
• Based on OE-specification TÜV approved castings
• Hand finished surfaces deliver smooth, progressive, quiet operation

Choose your face design

G88 multi-groove — Multiple radial grooves create a turbine effect to move air through the disc, helping temperatures stay under control and reducing the likelihood of warping or vibration. Built from TÜV approved castings, heat treated and hand finished. Many applications carry TÜV and ABE approval.

F2000 curved groove — A favourite for fast road and frequent track sessions. The sweeping curved channels continually refresh the pad face and manage heat without compromising structural integrity. Pairs perfectly with Tarox Corsa pads for track work. Heat treated and hand finished on OE-spec castings.

Sport Japan drilled and grooved — Aggressive style with proven function. Fully drilled, countersunk holes vent gases to combat fade, while six grooves keep the pads deglazed for repeatable bite. Produced from OE-spec castings, heat treated and hand finished. Many applications carry TÜV approval.

What you will feel

• Sharper initial response and easy modulation
• Improved high temperature stability and fade resistance
• Reduced judder with ultra-flat, hand finished braking faces
• Best results when paired with Tarox performance pads for matched friction and heat characteristics

Fitting and support

Professional installation available at MJ Modifications in Warwickshire. For a fitting quote or to confirm suitability for your 420i M Sport including xDrive, email info@mjmodifications.co.uk.

Compatibility check

This listing is for vehicles equipped with the 340 mm front set up. BMW offered different sizes across years and options. Please measure your existing front disc diameter or contact us with your registration or VIN and we will verify the correct parts before you order.

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