There’s been a few posters telling of circlips popping out of the groove and one mentioned using the Allstar sleeves instead. Having bought the Ebay sleeves myself, and knowing I was a little concerned about the clips I figured I’d buy one to look at and decide.
Here’s the Allstar sleeve and perch;
The first thing that hits you is the quality of the threads and that fact there’s a decent amount of lathe work that went into the part, both inside and out.
A couple things that stand out;
1. The counter bore for the circlip with a square shoulder to seat against. This should prevent the clip from being able to be forced out of the groove (I realize most people aren’t complaining about the clip coming out).
2. The inside profile is machined so that the shock body supports the sleeve at the top and bottom so no duct tape wrap is needed. The fit is snug and the sleeve actually needed to be tapped with a block of wood to fully seat down over the clip. But the sleeve is also removable the same way.
When installing, the sleeve just clears the clip and when fully seated the clip is approximately .600” inside the sleeve.
I don’t see how the clip can ever be forced out of the groove using this sleeve.
There are other benefits of the product that really show up when assembling and comparing against a similar setup using the Ebay sleeves. The location of the spring perch can be substantially lower than the Ebay units can be set to. Basically the Allstar sleeve & perch, at the lowest position that is still fully engaged on the threads is approximately .875” lower than the Ebay product.
I’ve seen various Miata suspension ratios but compared to the Ebay sleeves
this would mean the ability to get to a point approximately 1.3” lower in the front and 1.2” in the back. This, and the capturing of the circlip to prevent failure, made it worthwhile to build the set using this setup.
Using my MSM Bilsteins, the front was;
And the rears are;
There’s still a bit of work that needs to be done, especially with the rear shocks to use the Allstar product. For one, the fronts need to use the 5” sleeve. Don’t even think about using a 7” sleeve as they’re too long.
Allstar doesn’t offer anything shorter than 5” so you’ll need to cut the rear sleeves to length (be careful to cut the end OPPOSITE the circlip counterbore and be carefull you don’t cut much more than 1 to 1-1/4” or you won’t have anything supporting the upper part of the sleeve. I cut mine to 4" OAL on my chop saw but It would be nice if Allstar offered a 4” or 3” sleeve length to allow for extended top hat clearance. Getting 1” of clearance is fairly easy though if you cut to 3-3/4 OAL.
So, all in all, are the better sleeves worth it? If peace of mind and more adjustability is important to you then I guess it is. I changed mine out.
I bought through Summit at $63.96 (sleeves) + $55.16 (adjusting nuts) but had a $20 coupon and shipping was free.
I’d give them a thumbs up.