DIY Bump Stop Spacers

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Joined
Dec 18, 2014
Threads
4
Messages
25
Location
San Diego
DIY bump stop spacers.

Cost: $15
Time: 1hr
Difficulty: Easy
Required Tools: 3/8 drill bit, punch, hammer, safely glasses, 12mm socket, drill press or drill, WD40.


BEFORE:
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AFTER:
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After looking around for bump stop spacer and seeing most are selling at $40-$50+ I decided to make my own rear bump stop spacer on my 97 LX450. Here is my DIY project. It took me about an hour to make and install the spacers.

STEP 1: Buy 2"x2" aluminum square stock at your local metal supply shop. The nice thing about this is you have a selection of sizes of solid square stock to easily choose the size of spacer you need. I bought 2"x2" solid stock at 14" length. The supplier even cut them into two 7" lengths for free, which made this project even easier.

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STEP 2: Remove your bump stops and place on spacers for sizing spacing for holes to be drilled. Use a punch to make holes for drilling.

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STEP 3: Drill holes. I used a 3/8 drill bit. You can use a larger drill to compensate if your holes are not perfectly spaced apart or if you don't have an old drill press to get the holes perfectly straight.

Note: Drilling aluminum is easy but creates lots of shavings. Like may of you, my garage is used by the whole family and I didn't want sharp aluminum shavings all over. I held the shop vac near the drill to suck up the shavings while I was drilling. It worked pretty well and caught 70% of the mess.
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STEP 4:

Check fit of spacers and brackets using 2" longer bolts with same thread as factory bolts. I purchased longer bolts at a local hardware distributer for a few dollars.

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STEP 5:

Attach frame. You could also spray paint the spacer before attaching, if thats your preference. A little WD40 also helps if your threads are dirty or have any rust.

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STEP 6: Go wheeling, since you just saved $30+ dollars making your own spacers that are pretty much the same as ones sold online minus a company engraved logo.
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Happy Trails ~Kyle
 
nice work. Excuse the novice question - but to my understanding the bump stops are to prevent the axle from traveling too far after installing a lift. What happens if you Don't have bump stop extensions?
 
Correct, you only need to extend the spacers if you add lift/larger tires. I'm running a 5" front/4" rear lift with 315s. I originally didn't add the spacers as it wasn't rubbing on local wheeling trips. I had a last minute invite to run the Rubicon last year and didn't have time to add the spacers before hand. While on the Rubicon the extra gear and passages on the twisty stuff caused some rubbing. Passage rear fender did't survive.

Passager:
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Drivers:
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Looks good. What fox shocks do you have there on the rear? The 073s (0-2.5") or the 087s (3.5/4")? And what coils you got there? I have the 073s and not sure what length bump stop spacer I need. I'm guesstimating at least 40mm.
 
The shocks are the 087s. The fit seems perfect. I'm running Ironman 4" rear springs and TJM 5" fronts. All the links are the Metal-tech adjustable links with Johnny Joints with Slee machined front lower Controll arms. So far I'm happy with the set up. I pieced the lift together from what I thought are the best components available.
 
nice work. Excuse the novice question - but to my understanding the bump stops are to prevent the axle from traveling too far after installing a lift. What happens if you Don't have bump stop extensions?

Bump stop spacers are there also to prevent bottoming out longer aftermarket shocks, as well as preventing larger tires rubbing the frame and body.
 
Thanks for this. I may do my own sway bar hocks as well. Do you think the aluminum would hold up for front sway bar as well, or use steel?
 
I think aluminum is fine the front sway bar as well. I have been running the same aluminum blocks on my front sway bar for a year now without a problem. I think all the front sway bar spacers sold online are just solid aluminum with company logos engraved on them.
 
Have made lots of them, square steel tube or plastic also work well. Now just get them from Hitit66, he is local, delivers, so easy.
 
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