As power increases it is important to not undervalue stopping power. The E8x, E9x or F3X platform have insane performance potential, but since they weren't an "M" model they lack certain things which can help increase control and performance; two examples being a limited slip differential and powerful brakes. With our adapter plates you can harness the braking potential of the enormous Brembo's used on F8x series M2/M3/M4 vehicles.
Install & Review (Independent) https://www.1addicts.com/forums/showthread.php?t=1905900
Whether roll racing your N54/N55/B58 monster or going for faster times at the road course, these brakes are an amazing upgrade. Don't take my word for it, watch Robert Kubica, F1 legend, put them to work at the Nürburgring Nordschleife below using completely stock calipers with upgraded pads with the monster 380mm front and 370mm disks you can run all the same.
Design:
This kit includes everything you need; from hardened steel adapter plates to custom fasteners not available anywhere else. As with everything we make, this kit is engineered (including FEA) and manufactured here in the USA. The adapter plates are CNC machined from heat treated 4140 steel and gold zinc coated. The custom hardware is made on the CNC lathe, sent to heat treatment, and then also zinc coated for protection and good looks.
Critical to designing a big brake kit is not only the "bigger is better" mentality, but piston size, rotor torque, and brake bias which are all important primary factors. From doing the math and testing it ourselves, this kit will not throw your brake balance out of whack to ensures that the vehicle will retain good initial bite and have consistent pedal travel just like OEM. If tracking your vehicle hard, consider upgrading to a E9x M3 master cylinder for a harder pedal.
The M2, M3, M4 and F-Series calipers are a lightweight 2-piece design with stainless steel pistons. They are much better designed than the 135i 6-pot Brembo which is notorious for having the ceramic pistons crack during track laps, or the cheap slider-style single-piston calipers on the 335i. Even after you spend a bunch of money on new pistons and seals, the OEM brakes still have trouble consistently slowing down these vehicles with such a small rotor that overheats. No matter what we did on our time-attack 1M clone, we could not get the brakes to stop fading at the track.
This big brake kit allows any Non-M E8x, E9x, F2x or F3x to install these much more capable brakes. Compare the factory front 135i 338x26/335i 348x30mm 1-piece rotors to the M3/M4 380x30mm 2-piece rotors. The rear upgrade also impressive, moving the 135i 324x22/335i 336x22mm 1-piece rotors to massive 370x24mm 2-piece rotors. 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 clone we no longer have any fading issues at the track.
Wheel Requirements: Wheels must have barrel of 17" or greater to clear this setup. Fits most 18" wheels, using spacers also helps. To measure this, just take your wheels off and measure across the section where the wheel contacts the hub.
Which kit is right for you:
Depending on what car you have, you'll need a different combination of parts. NOT COMPATIBLE WITH LCI E90/E91 MODELS
F-Series 2-Series: Our front adapter kit bolts on like normal with no surprises. The rear adapter kit bolts on but the M series rear e-brake hub is larger, so the stock e-brake wont work. You will either lose the use of the emergency brake, or you swap to a 3 or 4 series knuckle and then you can use the emergency brake.
F-Series 3-Series/4-Series: Our front adapter kit bolts on like normal with no surprises. Need to slightly trim the brake shield/e-brake for the rear adapter plates.
E-Series 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.
E-Series 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.
E-Series 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.
OEM Part Numbers:
M3/M4 Front Calipers: 34116799469 and 34116799470. Can be purchased new or can be sourced for a junkyard for cheap. Front calipers are marked 370/380 in the casting on the back, not the same as standard F30 calipers.
F Series Non-M Grey Front Calipers: 34116865538 and 34116850931. Can be purchased new or can be sourced for a junkyard for cheap. Front calipers are marked 340 in the casting on the back, not the same as M2/M3/M4.
M3/M4 Rear Calipers: 34216799461 and 34216799462, also found on F30 M-Performance vehicles.
Front Rotors: 34112284810 and 34112284809
Rear Rotors: 34212284811 and 34212284812
Conversion Rear Hub for E 335i- 33416771082 330 and below- 33416771081
Wheel Bearing: 135/335i- 33416775842 128i/32xi- 33416762317
E9x Rear Knuckles: 33302283541 and 33302283542
F8x Front Knuckles: 33416762317 and 31212284002
Install Videos
Front Bracket Instructions
Don't wait, order yours today!
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