Bilstein 6112 & 5100 Install – 5th gen 4runner
Bilstein 6112 Front & 5100 Rear Install on 5th Gen 4Runner
2.65″ Suspension Lift with 6112s in the Front and a 2″ Icon Spring in the Rear with 5100 Shocks without KDSS
If you are looking for a well-rounded suspension lift without breaking the bank, consider Bilstein shocks and coilovers. Bilstein is one of the most common options for digressive shock absorbers across many platforms. Developed in both North America and Germany, Bilstein is a brand you can trust to run on your 4Runner.
The install was done with 285/55R20 (32.3″). Tire Size: 20X9 with an offset: 35 and backspace: 6.350. Absolutely no rubbing in forward/reverse after a few days of driving. This 4Runner is strictly a street princess so we probably won’t test much off-road flex on this set-up.
If you are looking to run 32.7″ (285/70R17) tires with this kit, you can but you will likely have some trimming (fender liner push, and possible BMC) to do. If trimming is not your thing, then you should stick with a mid-level 32.1″(275/70R17) tire or smaller depending on wheel size.
Please check out our tire size guide if you have any questions on tire and wheel size. For an advanced suspension with more flexibility for use with larger tire size, consider looking at a threaded adjustable suspension like Icon, KING, Fox, Radflow or the Toytec Boss coils.
The 6112 and 5100 combination is a great option for many 4Runner owners out there who are looking for a mid-range suspension lift. You can expect an extended 1-1.5″ travel of shock but won’t truly see that travel until you mount UCAs (upper control arms). Expect a substantial amount on-road stability and performance, though. With 6112s, 5100s, and Icon springs, your body roll, and nose dive will decrease and your cornering stability will increase.
5th Gen 4Runner Bilstein Lift
2010+ Toyota 4Runner
- Bilstein Coilover (B8 6112): Check Price
- Bilstein Rear Shock option 1 (5100 1.25-2″ Lift): Check Price
- Bilstein Rear Shock with Resivoir option 2 (5160 1.25-2″ Lift): Check Price
- Rear Spring (ICON 52700): Check Price
Bilstein B8 6112 Coilovers (47-259768)
The 6112s offer 0-2.65″ of lift on 4WD 4Runners and 3.25″+ on RWD 4Runners with 7 snap-ring grooves and clip settings for ride height adjustment. Many websites quote 0-2.5″ and 0-2.65″ of lift, but the height really is closer to 2.65″ of lift on the highest clip setting. The Eibach-sourced 600lb spring can be adjusted to desired ride height. We can’t comment on how the actual spring rate is affected under load, as we do not have an aftermarket bumper, which, etc installed.
Bilstein 5100 Rear Shocks
For matching rear shocks, you can go with the Bilstein 5100 1.25-2″ lift (33-187174) or the Bilstein 5160 1.25-2″ lift (25-227611). The Bilstein 5100 is a monotube shock with digressive valving that offers increased damping both on and off-road while maintaining a comfortable yet stable ride. The 5160 is a similar shock just with an added reservoir and is closer in terms of valving to match that of the 6112. If you are looking to push your suspension a little harder, consider the 5160.
Options for Rear Springs
Plenty of options for springs out there, but we had a set of ICONs left over from our Icon stage 2 kit so they were free. You can go with the OME 2895 2″ springs, Dobinsons C59-327 1.7″ spring, or any other spring that will fit your application best. The ICON 52700 spring is a 2″ spring that is well priced for what you get considering the name.
Bilstein 6112 maxed & 5100/Icon springs – ride quality
2016 SR5 4Runner with NO KDSS
I would like to have a Good and Bad section but ride quality is pretty subjective.
The ride quality on-road has been improved. Factory ride quality is somewhat still felt, although things do start to tighten up a bit (in a good way). Noticeably less body roll and less nose dive on braking. This setup feels similar to a test drive I had in 2016 TRD Pro. The Bilstein 4Runner-tuned suspension ride quality remains closer to an OEM feel as opposed to a stiff Icon suspension. This may be a good or bad thing depending on how you want your 4Runner to perform on/off-road.
Daily driving the Bilstein 6112/5100 suspension compared to an Icon will be much more comfortable. But, comfortable is relative here. I have daily driven with the Icon stage 2 for over a year and enjoy the stiffer ride over the looser/floaty OEM feel because I mostly HATE body roll. My girl, on the other hand, barely notices it. I would rather get jerked around once with a tight suspension than wobble around 3 or 4 times with a Cadillac feeling suspension. That is how this suspension rides, more like a Cadillac. It’s pretty plush, somewhat responsive, all while decreasing roll and dive. Important to note, I have not experienced any steering wheel shake at highway speeds (before balance/alignment).
For city driving, the 6112/5100 valving seems semi-firm over gentle rollers and corners smooth as well with minimal body roll, although you can still feel the roll. The same goes for riding over potholes, uneven pavement, speed bumps, and exiting driveways at an angle. It’s more firm than stock, but not as stiff as a KDSS system with an Icon suspension maxed.
This all may be improved with the 5160 shocks as it’s the closest shock in terms of valving but hard to say with no experience. I doubt it will make much of a “noticeable” difference to many people out there.
Conclusion on ride quality
There is some give and take in finding the right suspension across all suspension events. Digressive, progressive and linear shocks all handle events differently and they all come with their ups and downs. There is no “best” solution out there. This is to be debated by only you on whether or not you want a stiffer ride or a smoother ride overall.
Overall, this is a great introductory suspension lift for the 4Runner. You will maintain most of the factory ride while reducing roll and dive. If stock roll and dive is a “10” the 6112/5100 would be a “5”. Honestly, it will cut the roll and dive in half.
The 6112 is somewhat adjustable so you can tailor the coilover to your desired ride height dependant on the rear spring you choose. If at a later time, you add a bumper or winch, you can swap in a heavier coil over your strut.
Finally, the Alignment Sheet.
Bilstein 6112 Installation
This install assumes you know how to jack up your truck, safely use jack stands, and remove your tires. If you are not confident in this install, please take your truck to a local 4×4 shop and have them perform the install for you.
- Floor Jack
- Jack Stands
- Metric Sockets
- Standard Sockets
- Open-end wrenches
- Vice Grips
- Impact wrench
- Coil Spring Compressors
- Pin Punch
- Screwdriver or snap ring pliers
Step 1: Remove Lower Strut Bolt
Once you have jacked up your truck and placed jack stands under your frame, start pulling apart your suspension components. The strut bolt is tight. Once you have the strut bolt nut off, you can knock the bolt out using a punch. To prevent the strut from putting too much pressure on the bolt against the lower control arm, you can jack up the hub assembly. This way when you punch out the bolt, the whole assembly won’t fall down. This also prevents bolts from stripping.
Step 2: Remove three bolts from coilover bucket
There are three bolts on top of the bucket. Using an open-end wrench, you can remove the nuts. This will free the whole strut and coil from the bucket.
Step 3: Remove lower knuckle mount bolts
There are two lower knuckle mount bolts you need to remove. Once these are out, the whole lower control arm will be free from the hub assembly.
Step 4: Remove factory shock
To further separate the hub assembly from the lower control arm, it helps to jack up the hub assembly at the bottom of the brake rotor. This is much easier with two people. Jack up the hub and press down on the lower control arms, and the strut should fall right out.
Step 5: Compress Factory Springs
You can buy a set of coil spring compressors for around $50 or you can rent them for around $20. It makes more sense to just buy them as you will have them forever. You need to compress the coil in order to remove the OE top mount from the strut.
Step 6: Remove Factory Top hat from Strut/Coil Assembly
Using a set of vice grips and a 17mm open-end wrench, loosen the nut from the top of the OE top mount. Pull everything off and save the top mount. You can discard the OE washer, nut, and bushing. Bilstein provides hardware in their kit that will replace these.
NOTE: You will need to keep the bushing that is on the underside of the top mount. That should stay attached after you remove the top mount. Don’t take it off. Just leave it where it sits.
Step 7: Adjust Bilstein Strut Clip to desired ride height
Using a set of snap ring pliers or a flathead screwdriver, move the adjustable clip to your desired ride height. In our case, we are moving the clip to the top ring.
Step 8: Slide on Bilstein Spring Seat
The spring seat just slides down over the shock tube into place and sits on the clip.
Step 9: Slide on Bilstein Rod Adapter and Lower Washer
Step 10: Set Bilstein Strut in Vice and Compress Springs
Although, it’s not pictured. You want the text on the spring to be right side up, not upside down. The Bilstein text on the coil should be towards the top. Coil spring compressors are not designed for impact wrenches or air guns but it will go much faster using an impact. We have used these compressors for a few different installs and on this day, we stripped a bolt (just something to think about). You will need these compressors to get the job done.
Step 11A: Add Factory Top Mount to top of Strut & Coil
After your coil is compressed, place the top mount on top of the coil.
Step 11B: Add bushing, washer, and nut to Bilstein strut
Add the bushing provided in the Bilstein kit along with the spacer and nut.
IMPORTANT: Make sure that one of the nuts on the top mount is inline with the bottom of the strut. You want to make sure that the bottom of your strut will fit into place, along with your top mount fitting into place in the bucket. If you fail to align these, your Bilstein 6112 will not fit. You will need to loosen everything and make adjustments.
Step 11C: Tighten Nut until assembly doesn’t spin – then torque 20ft Lbs
Thread your nut down until everything is tight. You want to make sure the spacer and bushing underneath is not moving.
Once you thread your nut down and everything is tight, then you can remove the coil compressors.
Lastly, torque to 20ft lbs.
Step 12: Install Bilstein 6112 Coilover
That’s it for the front. Throw your new Bilstein 6112 up into place. Place the bottom of your strut into position. Slide your strut bolt through and make sure your top mount fits into the coil bucket correctly. Thread down your top mount bolts and then thread in your lower knuckle mounting mounts.
Bilstein 5100 & Icon Spring Installation
The rear should go quicker than the front. Removing the rear shocks are always pretty simple. Removing the rear springs will be easy if they are factory and may take a little more force if you have larger springs or springs with spacers.
Step 1: Remove lower shock bolt
Step 2: Remove top shock bolt
There is very little room to work with around the top shock nut. You need an 8mm socket or small vice grips at the very top to hold the shock body still while turning the other nut to break loose. Be patient with this part of the process. Once you have the top nut off, the rear shock should fall right out.
Step 3: Remove sway bar mount
This is not necessary but in some cases, you may need to disconnect your sway bar from the frame in order to drop the axle low enough to remove the rear springs.
Step 4: Disconnect brake line brackets and cables
There are lines and brackets along the axle that you may need to disconnect in order for the brake lines to hang free.
Extending the axle to remove the springs will stretch out your brake lines. If you stretch your brake lines out too far, you risk damaging them.
Do your self a favor and disconnect any cable/bracket that is connected to the axle that may prevent your axle from flexing before removing the springs.
Step 5: Remove factory springs & install new springs
To get the rear springs out, jack up one side of the axle which will drop the opposite side. This will free up the spring and with a little wiggle, it should come right out. We had 2″ spacers on top of our coils, so it took a little more effort.
If you have factory springs, they should come out really easy.
Step 6: Install Bilstein 5100 Shocks
Remove the plastic sleeve on the Bilstein shocks. Place your Bilstein 5100 shock on the bottom shock mount first, and lightly thread on the shock mount nut. Then, add your washer and the bushing to the top of the shock. Place your shock up through the top shock mount and add your second bushing and washer. Thread on your top nut and then torque to spec on both the bottom and top shock mounts.
Step 7: Reconnect Sway Bar Mount
Reconnect your sway bar mount and you are all set!
ALWAYS IMPORTANT. Double check the torque specs on everything and make sure you double check your brake line brackets.
Bilstein 6112 & 5100 Final Result
How does it sit?
Pretty damn close to level. The front sits .5″ lower than the rear. If you wanted to level it completely, you can grab a couple shims from Ekstrom Design and throw a .25″ shim on top of the top mount.
For around $1000, this is a pretty nice suspension for the 5th Gen.
Questions or Comments? Leave them below!
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