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Old 03-21-2013, 05:53 PM   #1
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Bump stop bolts for 1.75 BB

I'm going to install the Daystar 1.75 BB this Sunday and I'm wondering if I'm going to need longer bolts for the rear (or front) bumpstops. I've read other installs for 2in BBs that required longer bolts, but the Daystar instructions say nothing about this.

If I will need longer bolts, what is the size, length and thread pitch of the originals, and how much longer would I need? If I need these bolts, i want to have them ready before I start the project.

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Old 03-21-2013, 11:03 PM   #2
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If you bought bumpstops extensions, this should come with longer bolts.

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Old 03-21-2013, 11:10 PM   #3
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If you do need longer bolts, your local hardware store should have what you need. They're 10mmX1.5 bolts
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Old 03-21-2013, 11:13 PM   #4
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yup, you should need 2" longer bolts to attach bumpstop extensions. here's what it should look like: Jeep Accessories - Rear Bumpstop Extension Kit

if you bought a Daystar kit, you likely just got larger, hard poly jounce bumpers...which are best thrown in the trash. here's why: Hard poly vs Microcellular stock jounce bumpers
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Old 03-22-2013, 05:27 AM   #5
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Unlimited, thanks for the reply. I got the kit with the hard bumpstops. I'm going to delay my install until I get proper extensions. Is this applicable to the front as well? Would the RC kit for the rear also work in the front?

Also, would it be ok to run 2in extensions with the 1.75 BB? Or should I cut 1/4 off the extension?

Patrick, Thanks as well. I have hardware in stock at the store. I just wanted the size and pitch to have them ready without having to bring a lot of stuff home with me. But the extensions will come with the bolts.
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Old 03-22-2013, 07:48 AM   #6
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After doing a bit more research, I think I'll return the Daystar kit and get the Teraflex 1.5 kit that comes with aluminum extensions.
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Old 03-22-2013, 08:39 AM   #7
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Quote:
Originally Posted by Gixxer86g View Post
Unlimited, thanks for the reply. I got the kit with the hard bumpstops. I'm going to delay my install until I get proper extensions. Is this applicable to the front as well? Would the RC kit for the rear also work in the front?

Also, would it be ok to run 2in extensions with the 1.75 BB? Or should I cut 1/4 off the extension?
the RC kit would technically fit in front, but I wouldn't suggest it for the front. there are better ways to do it in front, and you don't need that much extension in front anyway. for the rear, theres no need to cut 1/4" off, they're perfectly fine for your application.

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Originally Posted by Gixxer86g View Post
After doing a bit more research, I think I'll return the Daystar kit and get the Teraflex 1.5 kit that comes with aluminum extensions.
that works too. don't forget new shocks (Bilstein or Old Man Emu are good choices).
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Old 03-22-2013, 05:38 PM   #8
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Quote:
Originally Posted by UnlimitedLJ04 View Post
the RC kit would technically fit in front, but I wouldn't suggest it for the front. there are better ways to do it in front, and you don't need that much extension in front anyway. for the rear, theres no need to cut 1/4" off, they're perfectly fine for your application.


that works too. don't forget new shocks (Bilstein or Old Man Emu are good choices).
Thanks again for the advice. Since you can get away with the old shocks (supposedly) with that level of lift, I'll wait a couple of weeks.The Bilsteins seem to be the shock of choice, but I can probably get a set of Sensatracs off my shelf with a little more travel with the same mounts. Either way, I've got a motorcycle to get ready for the season.
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Old 03-22-2013, 06:24 PM   #9
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Thanks again for the advice. Since you can get away with the old shocks (supposedly) with that level of lift
*supposedly* is the key word there.

will they bolt up, yes.

is it a good idea, no.

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