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How to properly mount your 2g Rear Diff

bostonhatcher

Proven Member
149
21
Sep 28, 2006
Kansas City, Missouri
Here's the official street version of the rear diff mounts.

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bradikus7

Proven Member
409
6
Mar 8, 2008
Columbus, Ohio
This thread is misleading. I thought these mounts came with shiny new hardware...they do not. Can anybody help me with what size bolts I need? Also why did you guys weld a flat washer on your tab? Mine does not have that.
 

twicks69

Supporting Vendor
4,020
1,224
Mar 12, 2004
Milwaukee, Wisconsin
As an update to using these mounts for several years now, the entire time making 700+AWHP, and with the Front line Fabrication billet rear diff cover and billet main caps I have had zero issues with the rear end. For a while I still used my original rear diff housing and ring/pinion/diff with the front line fab cover and stock main caps and finally killed that one (evo diff side cover elongated the bearing bore and walked the bearing, resulting in killing the original ring and pinion with 12 years of abuse from me back in 2013). I also changed the evo clutch type rear diff side cover to a chromoly steel one made up for me by Jon @ TRE (Ninja cover).

Boston's product has held up 100% and everything has been all good in the neighborhood!
 
Last edited:

Yiddie

Probationary Member
62
0
Jul 27, 2010
Brainerd, Minnesota
Bostonhatcher still making these? I msged him couple days ago and no response. Looking for one of these asap.
 

twicks69

Supporting Vendor
4,020
1,224
Mar 12, 2004
Milwaukee, Wisconsin
Mine are still awesome dude, keep on making them!
 

yoscoobie

Proven Member
49
3
Jan 6, 2014
weston, Wisconsin
I've been working on a good, lightweight solution to mounting the 2g rear differential into the 3-mount subframe for the past few months. What I've noticed, is that the differential likes to rotate around the passenger side bolt that's on the front mount. The driveshaft gives the differential a torsional force like a helicopter, resulting in breaking the far left diff cover bolt (force x radius). Of course some are even breaking both diff cover bolts, because once the left lets go the right side bolt has twice as much load to hold onto. Well now the days are over where you take the entire rear end of your car and you can have 4 solid mounts just like the 1g's and evo's.

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The mounts are 6061 billet aluminum and weigh 1.2 lbs a piece (stock weighs 2.4 lbs). The third piece is 1/2" thick, water jet cut steel. I had to drop the subframe to weld it on because it's too close to the gas tank. I was able to lift the entire subframe with all the suspension parts on it by just the mounting plate.
I like your design, If i had a 2g i would use this, What are you selling it for$$
 

TrevoREX

Proven Member
107
12
Sep 2, 2013
Kalamazoo, Michigan
These look incredible. Are you doing individual orders or full group runs? I'm doing an awd swap so everything is all apart making these super convenient and "cheap" insurance. If you don't like/want to talk shop "on-thread" shoot me a pm.
 

91talonts1

Proven Member
718
277
Dec 29, 2008
Spencer, North_Carolina
I've had these on my car for around 2 years now. They've seen dozens of hard launches on the street and track and are holding up great, no problems whatsoever. Great product.
 
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