BMW E90 Big Brake Kit: Build Code Before Bracket

E90 is the saloon that finished first

If you searched for BMW E90 big brake kit, the car is the four-door of a range that also sold as an estate, a coupe and a convertible. The saloon arrived first and left first, and the build record behind it can name a different front brake than the car beside it at the lights. This page starts there.

The option code comes before the kit

On this body, the model year is not the brake specification. A build record is a parts requirement before it is a specification, and that is why the file opens with the VIN rather than the badge.

Six records we open before a bracket

Six control lines decide the bracket and the rotor row. Four come from the car, two from the wheel and the suspension.

Original wheels are checked against our own record file with the year and the VIN, so ET and J are not requested in that case. On an aftermarket wheel, ET sets how far the mounting face sits from the wheel centre line and J sets the width; both change the space the caliper has to live in, and a hub or alignment change moves that space again.

Rotor rows by wheel size, and the brake behind them

The market around this body is worth reading before the rows are. One six-piston kit is listed across the E90, E91, E92 and E93 bodies but only for the 335i, with a 355 x 32 mm disc, which is a reminder that the body code and the engine version are two different filters. A four-piston kit at 355 mm is marketed as fitting stock 18 inch wheels, which lines up with this record’s 18 inch row, and two vendors sell adapters that mount a later model’s calipers on these cars instead, one of them built around a 380 x 30 mm rotor. None of that transfers to this kit; it shows which questions a buyer here is already holding. Public records put factory wheel sizes across this generation between 16 inch and 20 inch, so an 18 inch row is already at the upper end of what these cars left with, and a 17 inch winter setup sits below the first row here.

What one front kit holds

A single order covers one front axle: 2 calipers, 2 brackets, 2 rotors, 4 pads and 2 hoses, with the count fixed before the quotation goes out.

A calipers-only order is quoted differently: the rotor, bracket, pad and hose interfaces then rest with you or your workshop, and the rows above wait until that combination has been checked. The rear axle is a second file as well, so a front-and-rear order lists 4 calipers and 4 rotors across two records. Export packing is listed at 45 x 45 x 45 cm and 45 kg on the current record, and both numbers are rechecked against the final rotor size before dispatch.

Material lines, and the brand question

Three material lines are on file, and they are the whole record:

No grade sheet, no test report and no approval file sits behind those lines, so a reseller cannot quote a material grade, a manufacturing route, a road-legality position or a performance figure from this page.

The live page also carries a brand question, and the answer belongs here in plain terms: the record establishes the V6 series label it is sold under and nothing further, so this page does not present the kit as another company’s product and drops that name. Lettering visible on the parts in the photographs is a finish, and no licence, sponsorship or authorisation is claimed over any mark this record does not own.

Who orders, and at what price

MOQ is 1 set, and a 30% deposit opens the build. Production takes 3–7 business days, delivery follows in about 20–35 business days, and the balance settles before dispatch. The defect warranty runs 5 years, with wear parts, installation errors and unauthorised changes outside it. On the price ladder, 1–9 sets sit at USD 448 each, 10–49 at USD 380 and 50–199 at USD 350, and the save notes are calculated from 448. The 688 figure shown struck through beside the unit price is on the correction list, because it cannot be reconciled with the rest of the block.

Owner questions that decide the order

The images, and the first thing to send

Three photographs sit below: the pair on their rotors with the bracket and hose pack, one body above its disc, and a second angle on the hat and the face. They show the kit, its pairing and its finish, so they cannot stand in for a measurement on your car.

This page is maintained by our fitment desk and reviewed on 2026-09-24. Sources checked: the 3 Series E90 record for the body codes, the saloon launch and the 2009-model-year facelift, and the M3 record for the M3 saloon window. Both sources describe the model history only; neither approves a bracket, a rotor row or a wheel for a specific car.

To open a file, send the VIN privately with the build date and the option code, the market the car was sold in, the engine version, photographs of the front calipers and the rotor face, the rotor diameter and thickness as measured, the wheel size with original or aftermarket status, ET and J values for aftermarket wheels, and any ride-height, spacer, hub or alignment change already fitted, plus the destination country and the quantity. The answer we send names the approved bracket and rotor row, the production and delivery windows, and what one set costs.