Racing Brake E82 2 Piece Rotors Pre-order

[ShocknAwe]

I recently approached Racing Brake about their F&R 2pc rotor kit for our cars. Interestingly they have changed the front rotor to be able to accommodate the OE pads.

They need at least 5 people total to commit to a pre-order on the front rotor to bring the kit back to regular production. RB is offering 10% off the price for pre-orders.

We (buyers) would be looking at about a 8-10 week lead time.

FRONT:

Originally Posted by RacingBrake

P/N: 2150

The front disc is a newly designed with wider annulus to cover the OE pad w/o having to trim the pad bottom.

Since it's specific for this application only so we need at least five 135i owners commit to the pre-orders in order to make them available

Link to general kit info: http://www.racingbrake.com/RB-Iron-R...bmw-irk-06.htm

These 2pc rotors allow you to retain the OE parking brake, and save ~20lbs of unsprung weight, about 5lbs per rotor. They make ring replacements which saves cost at next rotor change. All the relevant info is in the above link.


Respose from RB about the rear rotor size needing the Mitsubishi Evo X pad rather than the OE 135i pad.

Originally Posted by RacingBrake

No. It must remain the same (Trim OE pad or EVO 10 pads only) unless you want to lose the emergency brake which some other mfgrs would just cut from aluminum and fasely claim "light weight" two piece rotors like Girodisc, ECS tuning etc. w/o even disclosing this to consumers. But we never done that to impair this safety feature.

Wider disc annulus to fit the OE pad is not possible as it's constrained to the emergency drum brake @185mm and smaller rotor OD @322mm

This design is reviewed and approved by RB Engineering to assure a narrower pad is more than adequate even for track racing, while you can actually find more pad compound choice from EVO10 than 135i application.

I can assure you that you can never find a 2nd choice for this 135i rear two piece that is built so solid other than RB.

Update on RB 2pc rear rotor construction.

Recd an inquiry as forwarded below for your info.

Due to rotor casting consideration, the rear has a change on disc size @335x28, we re-check OE set up and determined the actual pad contact is only 334mm (vs. OE rotor's 338), so 335mm should fit well and can eliminate rusty lip on rotor edge like OE.

Please refer to the dwg below in case you want to update your post to keep the thread going.
https://cimg1.ibsrv.net/gimg/rennlis...e0fcbd0a4c.png



Thanks for your continuing supports.

PRICING:

Originally Posted by RacingBrake

Front rotor:
http://www.racingbrake.com/135i-E82-...-11-p/2150.htm

Rear rotor:
http://www.racingbrake.com/ProductDe...oductCode=2167

Front and rear bundle:
http://www.racingbrake.com/RB-Iron-R...bmw-irk-06.htm

Replacement rotor ring is listed under "Replacement Components" tab

For price without pads, deduct $65 from the rotor price.

Here's the list. Let's do this.

1. Shocknawe (Front + Rear rotors + Pads, domestic shipping)
2. arc_resistant (Front rotor only, ship to Canada)
3. ENixon (Front + Rear rotors + Pads, domestic shipping)
4.
5.
.
.
.
.

[ShocknAwe]

Anyone have questions I can forward to RB?

Waiting on the company for preorder specifics.

[houtan]

Awesome they have updated the fronts to work with oe pads. Do you know if they updated the rears to work with oe pads as well?

[ShocknAwe]

Originally Posted by houtan

Awesome they have updated the fronts to work with oe pads. Do you know if they updated the rears to work with oe pads as well?

I'll ask, but I don't think so. Something about it clearing the parking shoes.

[mabrahams]

What's the price of just the rotor/hats? The link shows the whole kit.

[arc_resistant]

Interested.
Front rotors and hats only.
Shipping to Canada.

[ShocknAwe]

houtan
Response from RB about the rear rotor size needing the Mitsubishi Evo X pad rather than the OE 135i pad.

Originally Posted by RacingBrake

No. It must remain the same (Trim OE pad or EVO 10 pads only) unless you want to lose the emergency brake which some other mfgrs would just cut from aluminum and fasely claim "light weight" two piece rotors like Girodisc, ECS tuning etc. w/o even disclosing this to consumers. But we never done that to impair this safety feature.

Wider disc annulus to fit the OE pad is not possible as it's constrained to the emergency drum brake @185mm and smaller rotor OD @322mm

This design is reviewed and approved by RB Engineering to assure a narrower pad is more than adequate even for track racing, while you can actually find more pad compound choice from EVO10 than 135i application.

I can assure you that you can never find a 2nd choice for this 135i rear two piece that is built so solid other than RB.

[ShocknAwe]

Originally Posted by arc_resistant

Interested.
Front rotors and hats only.
Shipping to Canada.

Got you!

Originally Posted by mabrahams

What's the price of just the rotor/hats? The link shows the whole kit.

Sent a request to RB for full price breakdown for us. Ill update when they email me back.

[Newguy123]

I have the oe size RB replacement rotors and pads on all 4 corners. It shaved something like 22lbs of total rotational weight. I recently did a 1/2 mile racing event and had no issues with the pads/rotors warping or cracking after 20+ runs hitting 160mph and slowing down. I think for the weight savings alone this setup is well worth the money.

[ShocknAwe]

Originally Posted by Newguy123

I have the oe size RB replacement rotors and pads on all 4 corners. It shaved something like 22lbs of total rotational weight. I recently did a 1/2 mile racing event and had no issues with the pads/rotors warping or cracking after 20+ runs hitting 160mph and slowing down. I think for the weight savings alone this setup is well worth the money.

Thanks for the quick review! I haven't heard anything but glowing praise of these rotors.

Want to switch to the new fronts?

[ShocknAwe]

Bump

[ENixon]

Add me to the list-

Front + Rear rotors + Pads, domestic shipping

[ShocknAwe]

Originally Posted by ENixon

Add me to the list-

Front + Rear rotors + Pads, domestic shipping

Got you!

Just two more.

[ShocknAwe]

Originally Posted by mabrahams

What's the price of just the rotor/hats? The link shows the whole kit.

Got a response on pricing.

Originally Posted by RacingBrake

Front rotor:
http://www.racingbrake.com/135i-E82-...-11-p/2150.htm

Rear rotor:
http://www.racingbrake.com/ProductDe...oductCode=2167

Front and rear bundle:
http://www.racingbrake.com/RB-Iron-R...bmw-irk-06.htm

Replacement rotor ring is listed under "Replacement Components" tab

For price without pads, deduct $65 from the rotor price.

[AB M2C]

I'm interested. Before committing, just wanted to make sure I'm understanding this right. To make them work we need evo 10 pads in the rear? But can we use upgraded pads all around like hawk ht 10s?

Thanks for any help. These look like an awesome way to save unsprung weight!

[ShocknAwe]

Originally Posted by ThatOneKid

I'm interested. Before committing, just wanted to make sure I'm understanding this right. To make them work we need evo 10 pads in the rear? But can we use upgraded pads all around like hawk ht 10s?

Thanks for any help. These look like an awesome way to save unsprung weight!

You will be able to use whatever OE 135i pad in the front and any evo x pad in the rear.

[mabrahams]

Did you get any updates on the pricing for just the rotors?

[ShocknAwe]

Originally Posted by mabrahams

Did you get any updates on the pricing for just the rotors?

See post #14 or the top.

[ShocknAwe]

Originally Posted by mabrahams

Did you get any updates on the pricing for just the rotors?

Did that answer your question? Let me know if it doesn't make sense.

[ShocknAwe]

RB on their pad selections. I will definitely be going with their offered street pads first, then go from there.

Originally Posted by RacingBrake

Not many people know RB offers excellent street pad compounds (good friction torque, excellent modulation, very low dust), although we make only on applications come with fixed pistons calipers (Brembo and RB brake calipers) which happens we have both front and rear pads for these 135i stock replacement rotors.

Unless a consumer really knows what he wants (more for track people), I highly suggest they take this bundle package (including RB XT910 spirited pads), I am sure 'Newguy123 can testify how good these RB pads are (for HPDE and spirited driving), you can also check EVO forum and know RB street pads is on the top list of EVO 8/9/10 owners' choice.

We don't sell a lot on our pads, nor the pad sales matters to us, rather we want our pads be bundled with brake rotors so customers can expect to have an optimal result with a new braking experience on RB brakes like this Mercedes SL550 customer.

Why this MB customer was so happy with RB pads? by reading more you will also learn where made him know us.

Racing Brake makes me happy
https://mbworld.org/forums/sl-class-...ml#post5939978

https://mbworld.org/forums/c63-amg-w...ke-squeal.html

Pay attention to a user's comment about XT910's "very liner" modulation and consistent in brake torque.

Thanks for reading and sharing.

[mabrahams]

Originally Posted by ShocknAwe

Did that answer your question? Let me know if it doesn't make sense.

Yes; thank you.

[ShocknAwe]

Need 2 more interested people to make this a reality.