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The ZZP Big Brake Kit… they say 12" but its more like 11.81". That's important if you plan on upgrading from this point, but thats information for a future post. Front rotors are originally from a 2010 HHR SS Non-Brembo, but ZZP chose a slightly different rotor design from Rock Auto that has...

OK, maybe someone can confirm some of the details concerning which parts were used by ZZP to create the ZZP Big Brake Kit for the Sonic. Calipers/Pads: 1998-2002 Camaro Rotors: 2008 HHR SS Non-Brembo (11.7"?) The Power Stop 17-749 brake pads say both "HHR (Non-Brembo)" and also "F-body Dual...

If you’ve pulled your cowl off and looked at the cup at the top of your front struts, you may have noticed it holds water. This is even worse if you have aftermarket coilovers bc your damping adjustment screw is all rusty. Or when you swap coilovers, the top nut is all rusted to the shaft. That...

So BNR doesnt do the header anymore. ZZP doesnt do the header anymore. They also stopped selling the mid-pipe. I've scoured the forum, trying to find someone who makes these, and I've looked online for a header/exhaust manifold for the Z18XER, although I'm not 100% confident if I've found the...

I have a 2015 Sedan 1.8L 5MT that I drove through flash flood waters and subsequently bent a conn rod. Found another motor, I'm performing the swap soon. The procedure to pull the engine out in CSMANS shows the engine coming out through the bottom after removing the sub frame. Obviously the...

Seibon stopped making these in 2013 and they threw away the mold, so aftermarket is the only hope I have of finding some fenders. If you have a pair for sale, holler at me... if you need a fender swap or something, i can deal with the details to make it easy for you. hmu 2818144397 for...

I just finished a nightmarish ZZP brake install. Just a few kinks to work out still... Basically, they sent front calipers with the wrong mounting holes (had to heli-coil to M12-1.75) and the right rear caliper locked up and wouldnt return to resting position under normal use. Seems like the...

Finally, after about a year, I have enough to post a build log. I have a build log at SMD forums, but wanted to show off the build to you Sonic connoisseurs LOL (4) 15" PSI subs 6000Wrms Sundown Amp Active crossovers (Pioneer 80PRS) 700W Arc Audio mid amp 250W Arc Audio tweeter amp CDT Audio...

Looking for stock corner weights. Someone had verified corner weights a while back and posted the results in a thread. I've been searching for an hour and cannot find it. Anyone got some stock or close-to-stock corner weights?

These topics are not popular, but as I progress into my own build, I want to see if anyone else is doing anything 'wild' with the ELECTRICAL SYSTEM. I've learned a lot already and hope to learn from y'all and share what I've done. I surf the DIYmobileaudio forums, SMD forums, some youtubers...

Any Sonics gonna be present? I think I'm going... driving in to Gainesville from Houston. Mini Madness

Background: My daily commute needs bass (full audio install & Big Three) and I want to relocate my battery to the back seat area. Seats & belts are permanently removed, giving me a lot more room for my mountain bike to slip through the trunk. Better weight distribution is a plus, and i have the...

White HB Turbo, Licence ending 1050... We were cruisin around 125mph, that 'stang got upset when 2 sonics blew by him!