Define rough as opinions/expectations vary... Personally I like aggressive suspension/handling and don't mind feeling every imperfection in the road. If I run over a coin I like to be able to feel what year it was stamped in, let alone heads/tails as that's too easy!
Read their manual, but I don't think they have to rebound completely, as the gas charge isn't a "spring", its just nitrogen and not air and supposed to keep foaming down in the oil.
Sad, isn't it? That's how the aftermarket has been lately with quality. After the kyb and sachs (they were bad out of the box too) I was lucky to find some Bilsteins still in stock for the Civic. You might as well get the factory shocks and call it a day. Hope the price isn't that much more!
You replacing yours already? Although I usually change factory shocks out early, my 2015 Trax has shown no indication it needs them although the gradual decline is probably not very noticable and I'll know when I put new ones on. In any case a few people on the Trax forums have put on Bilsteins and love them. Pricey though but I'm going to go that way eventually.
Most, if not all shock absorbers are nitrogen charged to reduce oil aeration. Twin-tube shocks have a low charge of gas, monotube shocks have higher pressure charges. Bilstein made the monotube shock popular.
www.strutmasters.com
ALL shocks have oil. Shocks with just oil are generally referred to as hydraulic shocks (there are a lot of these offered in the lifted Jeep world: "hydro shocks"). These are easy to tell when new because when you push them down they don't come back up where any gas shock not completely blown will push the shaft back up. "gas" shocks have oil and gas to prevent/minimize aerating the oil. Kyb GR2/excel are twin tube gas, gas a just and monomax are monotube gas. Monomax are the only ones you MIGHT consider firm. There quality isn't any worse or better then Monroe, Gabriel or other mass consumer based replacement parts. A few will fail prematurely. If your one of the unlucky ones out of tens of thousands with no issues use the warranty.
The Delcos are made by Monroe or KYB FYI - but the valving will be different. ACDelco is GM’s aftermarket service brand but you can get GM OE(blue label) or aftermarket(gold or silver label). It used to be ACDelco Orignal, Professional and Advantage.Thanks guys. I sent the KYBs back. GM AC Delcos will be here tomorrow. I'm getting what came stock on the car.
