Racing Brake XT910 vs XT970

[mcbarnet007]

Wow the brake dust from the 970’s is insane. Stopping power is addictive like others have posted. Front brake bias is even more pronounced. Perhaps a XT970 in the rear would help. MPP rotors and these brakes are incredible.

What is the hard ware that you are using to hold the bottom of the front spoiler?

 

[TexasTeslaRacing]

What is the hard ware that you are using to hold the bottom of the front spoiler?

Maier Racing front splitter is easy to install. You reuse the OEM bolts and the kit comes with double sided tape. You only have to drill holes on the splitter not your bumper, so you can bring it back to stock if you like. It's a very good fit and it's not going to come off.

 

[SD_Engnr]

MSRP $390 each set, same price front or rear. If it works for me at Laguna Seca, then it is well worth the $. Nothing worst than not having confidence in your brake on the track.

@mcbarnet007 has tested them several times with stock rotors at Laguna Seca. I'm sure he'll tell you that they work great.

 

[beastmode13]

@mcbarnet007 has tested them several times with stock rotors at Laguna Seca. I'm sure he'll tell you that they work great.

@mcbarnet007 thinks they are cat’s meow. However, him and I have different driving style. I tend to kill brakes. LOL

 

[mcbarnet007]

Maier Racing front splitter is easy to install. You reuse the OEM bolts and the kit comes with double sided tape. You only have to drill holes on the splitter not your bumper, so you can bring it back to stock if you like. It's a very good fit and it's not going to come off.

I have it installed but without the underside support since oem front aero tray is hold on by some plastic push tabs instead of the bolts that you've shown. That's why I am interested to find out what they are.

 

[mcbarnet007]

I have it installed but without the underside support since oem front aero tray is hold on by some plastic push tabs instead of the bolts that you've shown. That's why I am interested to find out what they are.

@TexasTeslaRacing any help?

 

[TexasTeslaRacing]

@TexasTeslaRacing any help?

The bolts came with the splitter from Maier racing

 

[TexasTeslaRacing]

@TexasTeslaRacing any help?

I want to say they are grade 5 (3 lines on head) and I'm pretty sure they are 5/16 - 18 x 1". Lowes or HomeDepot should have a replacement bolt with washers and nylock nuts.

 

[destructure00]

Ordered a set of front XT970s. Don't tell my wife

 

[destructure00]

XT970 front and rear (yep couldn't help myself) arrived today, so I signed up for another track day next weekend. It's at Wild Horse Pass East track, the one that ate my stock pads and two of my PS4S tires. Excited to see how it goes with 970s and RB rotors and track tires this time.

 

[beastmode13]

XT970 front and rear (yep couldn't help myself) arrived today, so I signed up for another track day next weekend. It's at Wild Horse Pass East track, the one that ate my stock pads and two of my PS4S tires. Excited to see how it goes with 970s and RB rotors and track tires this time.

Make sure you take the time to bed the 970 well before going all out.

 

[destructure00]

Installed and bedded pads this morning, 8 or so medium brakes from 50-30 then 8 hard brakes from 60-20, then 10 minutes on the highway to cool. Zero noise so far. Will keep an eye on wear.

Interesting that the rear 970s don't come with the adhesive to stick the outer pad to the caliper like the 910s do.

Also, in case anyone is interested, a standard 9v battery has enough juice to retract the parking brake screw.

 

[beastmode13]

Installed and bedded pads this morning, 8 or so medium brakes from 50-30 then 8 hard brakes from 60-20, then 10 minutes on the highway to cool. Zero noise so far. Will keep an eye on wear.

Interesting that the rear 970s don't come with the adhesive to stick the outer pad to the caliper like the 910s do.

Also, in case anyone is interested, a standard 9v battery has enough juice to retract the parking brake screw.

From my experience. Both RB XT970 and Porterfield R4 does not squeal when there is a nice layer of pad material on rotor. The squeal happens when the pad material is worn off from the low temp street braking.

 

[destructure00]

As of this morning the rear pads are making a clicking/tapping noise, presumably since there's no adhesive or anything on the outer pad and they are bouncing around back there. Will try to figure something out for that.

I wonder if a high temp (700F) copper gasket maker would work applied to the outer pad backing plate? Any thoughts?

 

[destructure00]

I guess we'll see how this does

 

[beastmode13]

I guess we'll see how this does

View attachment 502192

Ah. That reminds me of this. Disc Brake Quiet 4OZ, 118ML

 

[destructure00]

Ah. That reminds me of this. Disc Brake Quiet 4OZ, 118ML

I looked at that too, couldn't tell if it had any adhesive properties or if it just acted as an insulator. Also couldn't find anything on temp ratings.

 

[MasterC17]

@beastmode13 - for reference sake, how many street miles a year are you doing with the car?

For my driving habits, I don't find it worth swapping the pads, but I also only did 4,500 street miles last year (along with about 700 track miles).

 

[beastmode13]

@beastmode13 - for reference sake, how many street miles a year are you doing with the car?

For my driving habits, I don't find it worth swapping the pads, but I also only did 4,500 street miles last year (along with about 700 track miles).

15,000 miles on street, it’s my daily driver.

 

[destructure00]

@beastmode13 did the XT970s chew up your rotors a bit? This is after one 20 min session. Brakes did very well in first session, but this is more wear than I was expecting. Rears don't look like this, just the fronts...both sides.