M3/M4 Big Brake Adapter Kit - Rear - E9X Non-M Knuckles
A perfect pairing to our 380mm front brake kit! Our product options make it possible to fit the huge yet lightweight 2-Piece M2/M3/M4 370x22mm rotors and 2-Piston Brembo calipers from the F-Series to any 1 series of 3 series E chassis.
These rear brakes are massive compared to stock! The increased rotor size gives this brake package much more thermal capacity. This helps your brakes stop better, for longer. With the front and rear kit on our 650hp 1M we no longer have any fading issues at the track. The M rotors also have a huge selection of both aftermarket rotors and pads for the track.
Fitment Notes:
- Rear Calipers: 34216799461 and 34216799462 & other color versions available
- Rear Rotors: 34212284811 and 34212284812
For every detail such as part number see our Tech Article: M3/M4 Brembo Brake Upgrade Tech Article
Independent Install & Review: Brembo Brake Upgrade Install & Review
Depending on what car you have, you'll need a different combination of parts.
NOT COMPATIBLE WITH LCI E90/E91 MODELS. E92, etc LCI works.
1-Series Non-M: A very effective solution. The adapter plate kit lets you simply bolt on the brake package and go. Slight trimming of e-brake shoe recommended.
3-Series Non-M: Will either need to change to E9x M3 knuckles and use the spacer plate option, or make your car slightly wider (~7mm) on each side by changing your hubs to those from the 1-Series and use our rear adapter plate kit. Hub part number for 335i fitment: 33416771082. Part number for 330 and under fitment (smaller axle spline): 33416771081.
M Models (inc. 1M): To run the fronts you will need to change to F series front knuckles. All you need is our spacer plate in the rear and they just bolt on.
Please ensure your correct model is selected
Does NOT fit your Change Vehicle
Fits your Change Vehicle
Product Details
A perfect pairing to our 380mm front brake kit! Our product options make it possible to fit the huge yet lightweight 2-Piece M2/M3/M4 370x22mm rotors and 2-Piston Brembo calipers from the F-Series to any 1 series of 3 series E chassis.
These rear brakes are massive compared to stock! The increased rotor size gives this brake package much more thermal capacity. This helps your brakes stop better, for longer. With the front and rear kit on our 650hp 1M we no longer have any fading issues at the track. The M rotors also have a huge selection of both aftermarket rotors and pads for the track.
Fitment Notes:
- Rear Calipers: 34216799461 and 34216799462 & other color versions available
- Rear Rotors: 34212284811 and 34212284812
For every detail such as part number see our Tech Article: https://www.seemslegitgarage.com/post/m3-m4-brembo-brake-upgrade
Independent Install & Review: https://www.1addicts.com/forums/showthread.php?t=1905900
Depending on what car you have, you'll need a different combination of parts.
NOT COMPATIBLE WITH LCI E90/E91 MODELS. E92, etc LCI works.
1-Series Non-M: A very effective solution. The adapter plate kit lets you simply bolt on the brake package and go. Slight trimming of e-brake shoe recommended.
3-Series Non-M: Will either need to change to E9x M3 knuckles and use the spacer plate option, or make your car slightly wider (~7mm) on each side by changing your hubs to those from the 1-Series and use our rear adapter plate kit. Hub part number for 335i fitment: 33416771082. Part number for 330 and under fitment (smaller axle spline): 33416771081.
M Models (inc. 1M): To run the fronts you will need to change to F series front knuckles. All you need is our spacer plate in the rear and they just bolt on.
Prop 65 Warning
