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Unread 04-11-2006, 11:11 PM   #1
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Default 4Runner suspension options FAQ

Since there have been many questions asked about 4Runner suspension options here is a FAQ thread. It will also link to other threads where users can give their feedback on the lifts installed. Please do not reply to this thread (it will be locked), but PM me for any updates, changes additions required.

Most people simply look at a suspension as a way to lift the ride height of their 4R, however there are many more things to look at, such as articulation, ride quality, handling, etc.

The stock 4R pretty much comes with a double A-Arms coilover IFS and a 5 link live axle rear with shocks mounted on the outside of the frame rails for improved on road handling and control.

The Sport Edition and some Limiteds are fitted with a cross linked shock system called XREAS, this system was developed to improve nose diving and side to side sway during on road handling. It is important to note that this system is an integrated and essentially closed system. There are no aftermarket shocks available that will work with XREAS and thus the whole system has to be retained or removed. This limits the XREAS to pretty much spacer lifts, or with the option to remove the system completely to fit aftermarket shocks. Also some Limiteds can be equipped with a rear air suspension, there is no real solution for it.

Spacer lifts

These systems primarily reuse the stock suspension components and just add spacers to increase ride height. It normally consists of 2 rear spacers to be fitted on the rear coils, 4 spacers to be fitted to the front (2 inside the coilover strut assembly and 2 on top), some include front studs for the strut to allow fitment with spacers on top. The spacers fitted inside the coilover strut are called preload spacers, they essentially add additional spring load to the coil in the strut. The spacers fitted on top are called top-out spacers and the increase the actual total strut length.

Primarily spacer lifts are used to economically increase ride height, they do NOT:
  • Increase load carrying capability as the stock rate stay the same
  • Improve handling on and offroad
  • Improve articulation in most cases
  • Improve stability in offroad situations as the stock shocks are normally retained
  • Provide ability to carry the weight of aftermarket bumpers, winches, etc


Primary spacer lift options
Daystar listed 2.5 front 2 rear, expect 2 front and 1.5 rear approx $250
Deemed suitable for XREAS or normal suspensions, good source www.wheelersoffroad.com
Feedback thread
Cornfed listed 3 front 2 rear, expect listed results approx $240
Deemed suitable for XREAS or normal suspensions, good source www.burtmanindustries.com
Feedback thread
Revtek listed 3 front and 2.5 rear, expect listed results approx $480
Includes longer rear shocks and brake line bracket, this will improve articulation offroad. This lift is not recommended for XREAS, though some people have used it without fitting the rear shocks with positive results on XREAS.
Good source www.wheelersoffroad.com
Feedback thread

Old Man Emu from ARB or OME
Next on the list is the well known OME system. This is a replacement system and will require removal of stock coils and shocks.

No listed lift heights, but expect little over 3 for the front and little over 2 for the rear. Expect to pay around $800 shipped for complete suspension.

This system has various coils and shocks that can be chosen for the 4R application, although they are part numbers from the Prado 120 in Oz, thus not sanctioned directly by ARB USA as yet.

Common choices are
Front
V6 884 coils and N140S shocks
V8 885 coils and N140S shocks (or V6 with bumper/winch)
V8 (bumper/winch) 886 coils and N140S shocks

Rear 895 coils and N141 (soft) or N142 (firm) shocks

896 coils are also availible for the rear, but they are very firm. Only recommended for those with a rear bumper and lots of weight.

This is a direct bolt in application and do not require modification to any other components in the brake line or suspension.

Expect this suspension to:
  • Provide additional articulation offroad
  • Improve load carrying capability due higher rate coils
  • Improved offroad handling due to improved shocks and coils
  • Firmer and more solid on road ride compared to stock

Good source www.sleeoffroad.com

Feedback thread
Detailed discussion thread
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Last edited by bulldog; 09-30-2006 at 06:15 PM.
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Unread 04-11-2006, 11:15 PM   #2
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Continued...

Downey offroad 4Runner application
This company has done many offroad mods for Toyotas through the years. They provide an adjustable coilover front suspension using Bilstein shocks and coils specifically made by MidWest with Doetsch Tech shocks in the rear. Replaces stock components.

No real lift specs listed, expect 0-3.5” front (adjustable) and 1.5-2” rear. Expect to pay around $1300-$1500 (no prices listed anymore).

This is a direct bolt in application. They also provide longer rear brake lines and longer rear swaybar links. Also provided are front swaybar relocation brackets.

Expect this suspension to:
  • Provide additional articulation offroad
  • Be adjustable in the front for added weight accessories such as bumper, etc
  • Improved offroad handling due to improved shocks and coils

Load carrying capability in rear is uncertain at this point.

Feedback thread

Coilover technology
Although the 4Runner actually come stock with coilovers, this term in offroad circles normally refers to adjustable coilovers. Downey makes adjustable coilovers and is already listed above, thus will not be discussed again.

Coilovers in general are more tuned towards high speed desert runs and thus provide excellent control in these situations. They also tend to provide better protection against bottoming out of the front suspension. They tend to have firmer coils and more aggressive shock valving to operate in these conditions. Normally coilovers are also more resistant to fade in extensive high speed offroad situations. As such they will also prove to be difficult to fully flex the front suspension in slow offroad situations, such as rocks. Also expect very good on road control when cornering over rough road surfaces, in general these systems provide excellent on road and offroad handling sometimes at the cost of a firmer ride. Lastly expect these to provide maximum front suspension travel possible, although this not always translate into maximum flex (articulation) due firmer coils, especially with front swaybar in place.

These applications are bolt in, with no customization required.

Ok so let’s list the different coilovers.
Overland Warehouse - Radflo Coilovers
These coilover were designed by owner specifically for thsi platform over many months in conjunction with Radflo. They were initially designed to be able to carry the additional weight of bumpers and winches, however owners without the extra weight found the ride and ability to be great.

They have 2.5” shock bodies with 700lb/in coils and require the front swaybar to be relocated forward. Brackets are supplied in the kit for this.

Lift listed 1-3.5”, though expect 1.5-3.5” lift.

Good source
http://stores.homestead.com/Overland...Kit/Detail.bok

A rear suspension is also available from OW.


Discussion thread
Feedback thread
Icon
They feature digressive valving to provide smooth on road manners, but still have the ability to soak up extreme high speed offroad runs. Uses 650lb/in coils guaranteed not to sag.

They have 2.5” shock bodies and require the front swaybar to be relocated forward. Brackets are supplied in the kit for this.

Lift listed 0-3”, though expect 0-3.5” lift. Note ride will get firmer the higher they are adjusted. Expect a good overall ride due to shock valving. Expect to pay $1100 for a set with adjustment wrench.

Good source www.wheelersoffroad.com or Demello Offroad

A rear suspension is also availible from Icon.

Feedback thread
Sway-A-Way or SAW
SAW provides a very solid coilover option. Available in 2.0" adn 2.5" versions. They are deemed by many as a very good option although not seen in the same light as Donahoe. Also uses 650lb/in coils.

Lift listed 0-3”, expect same. Again expect ride to firm up as height is adjusted upwards. Expect to pay $690 for a 2.0" set and $900 for a 2.5" set.

Rear suspension also available with 2.0" monotube shock and coils. $600 or so.

Good source www.wheelersoffroad.com

Feedback thread

All Pro Offroad
All Pro seems to be supplying a 4Runner/FJC coilover with remote reservoir shocks. They have 2" shocks in either mono tube emulsion or adjustable remote res.
Lift listed 0-3.5". Expect to pay $900 for remote res and $700 for mono.
They also have UCAs and rear suspension kits.

Good source www.allprooffroad.com

Feedback thread

KING
King also released a complete susepnsion kit for the FJC. This should also work on the 4Runner. Both front and rear are 2.5" remote res shocks.
Front is coilovers listed for up to 3" of lift. They are rebuildable and the valving can be customized.

Expect to pay $1400 for the front COs and $700 for the rear shocks.

Discussion thread
http://www.toyota120.com/forum/showt...highlight=King
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Last edited by bulldog; 03-13-2010 at 04:00 PM.
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Unread 04-11-2006, 11:18 PM   #3
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Continued.....

Long Travel Suspensions
These suspensions are typically designed for really high speed desert type driving. They normally have 12” or more suspension travel compared to 8” on the stock front. Again only the front is catered for currently. Expect everything listed for the normal coilovers, but also expect improved articulation in slow offroad situation due to the longer travel and also removal of front swaybar. These are normally fitted with remote reservoir front coilover shocks, but can also be fitted with additional shocks on the front, so fade should be minimal under any circumstances.

These applications will require some customization. The front fenders need to be replaced by custom fiberglass units. An aftermarket front bumper might also be required. Do not think about this option if cost if even a consideration.
Total Chaos
4” or so adjustable lift, 13” of travel.

Expect to pay $2600, excluding coilovers, fenders, axles, additional shock tower and shocks (if fitted).

Best source is to go directly to their site and then retailers from there www.chaosfab.com

Feedback thread

Camburg
4” or so adjustable lift??, 12” of travel for 4x4

Expect to pay $5400 installed for 4x4. Location SoCal, not sure of other installers.

Best source is to go directly to their site www.camburg.com

Feedback thread
Uniball upper control arms UCAs
These are normally used with bolt in coilovers.

They provide
  • Better tire clearance,
  • Better travel without binding
  • Supposed to be more durable in extreme circumstances than the stock arms
  • Additional castor on the front wheels after a lift

With the 4R suspension you loose castor as it is lifted and normally at around 3” of lift most alignment shops find it difficult to bring the castor back to specification, with these arms castor lost during the lift can be regained and it will be easier for an alignments shop to get it right.

Please keep in mind these will not provide more suspension travel unless fitted with extended coilovers, which are not available for the 4Runner.
Total Chaos
Expect to pay $600.

Best source is to go directly to their site and then retailers from there www.chaosfab.com

Feedback thread

Camburg
Expect to pay $500.

Best source is to go directly to their site www.camburg.com

Feedback thread

Donahoe Racing UCAs
Expect to pay $950
These are setup at the factory to have the same castor as factory arms. However these arms can be adjusted unlike any of the other arms. Tehy also use heims instead of bushings, so expect less noise and no greasing. Again DR released the best in class, but at a price.

Check out DR's site and any of their retailers
http://www.donahoeracing.com/access_...hp?accessID=41

Feedback thread

Allpro
Allpro also has a set of UCA designed for the FJC, but should work on the 4Runner. They now also have zerks like most other UCAs that use the poly upper bushings.

Cost is $500.

More info
http://www.allprooffroad.com/index.p...sk=view&id=123

Rear suspension
Rear suspensions are offered by various companies that do the front suspensions as well now.

Rear shock roundup thread
http://www.toyota120.com/forum/showthread.php?t=815

Custom CS coils with Revtek or OME
Feedback thread
Discussion thread

Deaver with Bilstein
Feedback thread
Discussion thread

Donahoe Racing Rear Suspension and Shocks
Donahoe has just released their rear suspension for the 4R. It includes coils and rear monotube shocks. Expect around 2"-2.5" of lift with stock rear weight. This looks like a good solution for folks running the front coilovers already, especially with stock weight.

DR rear suspension and shock feedback thread
DR rear suspension discussion thread
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Last edited by bulldog; 03-13-2010 at 04:03 PM.
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Unread 04-12-2006, 06:53 PM   #4
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Other suspension odds and ends

Coil rates for OEM, OME and others

http://www.toyota120.com/forum/showthread.php?t=1678

Swaybars

There are currently no swaybar disconnect kits availible for either the front or rear. The front present a tricky situation with the swaybar running round the front and connecting to the spindle.

I tried disconnect in the rear, but they seem to kam up against the lower links casuing a lot of noise and utlimately bending the swaybar at Anza. Teh rear is not such a big deal as the axle is able to work through it and it feels a bit more stable to actually keep the rear swaybar intact on the trail.

The FJC swaybars are smaller than the 4R swaybars adn will provide more flex. However beware that they will also produce more sway. This canbe managed with firmer aftermarket coils in the fornt and rear. All coilover solutions have firmer coil rates, which will counteract the smaller swaybars.

Front FJC on 4R swaybar discussion

Rear FJC on 4R swaybar discussion


Rear airbags for the coils
This has been done by some users with positive results. Seems to have been mostly done on spacer lifted 4Runners. This provides the flexibility to increase the rate for heavy loads when required and then decrease it again. This normally requires the overload cones to be cut to fit the airbag to avoid pinching them at full flex or axle compression.

Feedback
Also read rest of thread on feedback.
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Last edited by bulldog; 05-25-2007 at 06:12 PM.
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