[King Bowser]

2018 SS 1LE
I have the BMR BK063 Cradle lockout getting ready to install, I have bought 4 new tty bolts after researching, while researching I read that some people say the diff lockout BMR BK060 is not needed while the cradle lockout is the one I want, so does anyone have both? Do I need both? Figured since I’m doing the lockout I should do the diff as well. Also there is a TTY bolt for the diff lockout but I’m having trouble finding that on the GM parts website.
Thanks in advance!

[Caerus]

A good question you asked. Surprised you did not get a response. I am also curious to hear from others experience. Technically the TTY bolts should be replaced but BMR reused old bolts with no negative effects. The four bolts for the rear cradle lockout are available for under $5 each.

[Joshinator99]

I’m running both kits. Reused the bolts. Been running those for 4 years or so, no problems.

[WhiteMale]

I did not see the need to do both and only did the cradle lockout, reused the bolts but I did have to buy a torque angle dial indicator for my torque wrench. I did do the front of cradle braces because those were an economical and easy install option.

[Joshinator99]

Originally Posted by WhiteMale

I did not see the need to do both and only did the cradle lockout, reused the bolts but I did have to buy a torque angle dial indicator for my torque wrench. I did do the front of cradle braces because those were an economical and easy install option.

If you start making decent power you’ll want the diff lockout too…

[Caerus]

Originally Posted by Joshinator99

I’m running both kits. Reused the bolts. Been running those for 4 years or so, no problems.

Originally Posted by WhiteMale

I did not see the need to do both and only did the cradle lockout, reused the bolts but I did have to buy a torque angle dial indicator for my torque wrench. I did do the front of cradle braces because those were an economical and easy install option.

Thanks for the responses.

When you guys did the rear cradle lock out, did you find the need to get a suspension alignment? BMR mentions to get it done, but I find it hard to believe the alignment would change. Thanks.

[Joshinator99]

Originally Posted by Caerus

Thanks for the responses.

When you guys did the rear cradle lock out, did you find the need to get a suspension alignment? BMR mentions to get it done, but I find it hard to believe the alignment would change. Thanks.

I did not, but I also did the BMR rear toe arms not long after and that obviously required an alignment. So while I believe I was fine without the alignment, I didn’t run it that way long enough to say for certain. Sorry!

[WhiteMale]

I didn't get an alignment as I didn't do anything to warrant it with the cradle lockout.

[Caerus]

Thanks for the response to both of you. I did not think an alignment was necessary.

[Spaceme1117]

Originally Posted by Caerus

Thanks for the response to both of you. I did not think an alignment was necessary.

You should get an alignment. You are removing the bolts holding the cradle to the car and changing the shape of the bushings. Both of these can shift the position of the cradle and likely will.

I did get an alignment on my 2017 SS and it was out of spec after the BMR install.

[Caerus]

Originally Posted by Spaceme1117

You should get an alignment. You are removing the bolts holding the cradle to the car and changing the shape of the bushings. Both of these can shift the position of the cradle and likely will.

I did get an alignment on my 2017 SS and it was out of spec after the BMR install.

Thanks for the input. So some say no alignment needed and some say yes. Not much definitive to go on. Your situation would be nice to know who much was the rear out of alignment; little? a lot? Possible out of alignment prior to BMR install? Thanks for any additional information.

[NicKey]

Once you get it on the alignment rack you will know whether or not an alignment was needed. If all is within spec a reputable performance shop will not charge you to align if not necessary, when it takes 10 min to check.

[Coded4SS]

It needs an alignment. That should be end of question. I barely moved mine down for the real cradle lockout and it was off once we got it on the rack. Felt much better. I would also def replace those bolts. Its cheap assurance and they are easy to get. Idk why its much of a question

[IndyZrider]

Originally Posted by Coded4SS

It needs an alignment. That should be end of question. I barely moved mine down for the real cradle lockout and it was off once we got it on the rack. Felt much better. I would also def replace those bolts. Its cheap assurance and they are easy to get. Idk why its much of a question

Agreed....when you're under there and you really see those bolts are what are holding all that power to the chassis it really is a no brainier to replace the bolts....