RK 3.5 springs...what rear trackbar setup?
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JK Enthusiast
Joined: Oct 2015
Posts: 384
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From: Central Texas
RK 3.5 springs...what rear trackbar setup?
So after going back and forth between RK, MC, and EVO coils, then from RK and EVO, I've decided to use RK, triple rate 3.5 coils, because I don't want to spend $100 extra when as far as I can tell, the RK triple rate and EVO plush rides are relatively the same on road.
I notice their kits all have the rear trackbar relocation bracket but it's the same for their 2.5 stock mod as it is in their higher kits.
If I use their 3.5 coils, would I be ok using their rear trackbar relocation bracket or should I go for one like Synergy that raises it ~3" since that's closer to the lift height than the ~2-2.5" the RL bracket raises the mount?
I'm going to be starting off with RK 3.5 springs, AEV geometry correction brackets, RK front trackbar, and some rear trackbar relocation bracket.
I will either make my own extended away links or find some used ones. Can I use stock rear sway links up front for 3.5 lift? Or does that ability stop after 2.5 of lift?
Thanks
I notice their kits all have the rear trackbar relocation bracket but it's the same for their 2.5 stock mod as it is in their higher kits.
If I use their 3.5 coils, would I be ok using their rear trackbar relocation bracket or should I go for one like Synergy that raises it ~3" since that's closer to the lift height than the ~2-2.5" the RL bracket raises the mount?
I'm going to be starting off with RK 3.5 springs, AEV geometry correction brackets, RK front trackbar, and some rear trackbar relocation bracket.
I will either make my own extended away links or find some used ones. Can I use stock rear sway links up front for 3.5 lift? Or does that ability stop after 2.5 of lift?
Thanks
JK Jedi Master
Joined: Jan 2008
Posts: 11,463
Likes: 165
From: Austin <--> Colorado Springs
In one of your other threads, you were talking about flips. You might do a little more research on those before deciding on a front trackbar, just to make sure the bar will work with whatever setup you are considering. (if I remember it right, synergy redesigned their own trackbar to work with an upper brace you can get for their flip setup. Some other mfg's trackbars were known to have issues with it)
Swaybar angle/link length can depend on shock length. You generally want the swaybars roughly parallel to the frame. Short links, with swaybars angled down, has been known to flip the swaybar around backwards when the axle is drooped. But if you have short shocks, the axle can't droop enough to allow the swaybar to extend enough to flip around backwards. With long travel shocks, you might even want links that are long enough to raise the swaybar angle 5 or 10 degrees above parallel.
Swaybar angle/link length can depend on shock length. You generally want the swaybars roughly parallel to the frame. Short links, with swaybars angled down, has been known to flip the swaybar around backwards when the axle is drooped. But if you have short shocks, the axle can't droop enough to allow the swaybar to extend enough to flip around backwards. With long travel shocks, you might even want links that are long enough to raise the swaybar angle 5 or 10 degrees above parallel.
Thread Starter
JK Enthusiast
Joined: Oct 2015
Posts: 384
Likes: 2
From: Central Texas
In one of your other threads, you were talking about flips. You might do a little more research on those before deciding on a front trackbar, just to make sure the bar will work with whatever setup you are considering. (if I remember it right, synergy redesigned their own trackbar to work with an upper brace you can get for their flip setup. Some other mfg's trackbars were known to have issues with it) Swaybar angle/link length can depend on shock length. You generally want the swaybars roughly parallel to the frame. Short links, with swaybars angled down, has been known to flip the swaybar around backwards when the axle is drooped. But if you have short shocks, the axle can't droop enough to allow the swaybar to extend enough to flip around backwards. With long travel shocks, you might even want links that are long enough to raise the swaybar angle 5 or 10 degrees above parallel.
And yeah I know about these swaybar angle and not wanting it to flip forward etc, I'm just wondering if the stock rear link ghetto setup would work on the front at 3.5 inches. I see people talk about it for 2.5 but idk about 3.5. My jeep isn't here so I can't look at it. I never go offroad with the swaybar connected though either, so I'm not worried about it flipping forward, just wondering what's a cheapo route to address the need for extended front links.
Last edited by gnarly_mike; Oct 9, 2015 at 04:25 PM.
Thread Starter
JK Enthusiast
Joined: Oct 2015
Posts: 384
Likes: 2
From: Central Texas
So why does RK not offer different rear brackets for the different lift heights? I can't understand why they'd have the same bracket used in their 2.5 kit as their 3.5 and 5.5 kits.
JK Jedi Master
Joined: Jan 2008
Posts: 11,463
Likes: 165
From: Austin <--> Colorado Springs
Just something to keep in mind if you go with long travel shocks.
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Thread Starter
JK Enthusiast
Joined: Oct 2015
Posts: 384
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From: Central Texas
Unless the body shop.... -____-
If the rear links are too short to be used with the 3.5 coils and have the sway positioned parallel, I will just cut the ends off my friend's stock front links and weld them onto some 1/2" or 3/4" stock, and that'll be that
JK Freak
Joined: Oct 2014
Posts: 768
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Friendly advice to show I don't hold a grudge and I'm really a nice guy. If you are going to flip the drag link, which I would at 3.5, but "do-able" without. With the synergy kit you can use your stock TB, and because they relocate the sway bar links, the factory rear sway bar links will be almost perfect length up front. Save you some money. Without buying the links and adj TB, it's ALMOST like getting a free drag link flip kit from synergy.