Super Soft Rear Bump Stops.

DAYSTAR KU09014BK: These bump stops and adapters are a perfect solution to the rear aluminum 4Runner Cornbred Spacers.  The beefy spacers do not allow you to install the center isolator cones the factor started including in the 1999 model year.   These Daystar bump stops and adapters replace the very small and stout frame mounted bump stop on 1999+ 4Runners.  This would also be an upgrade over the factory bump stop on 1996-1998 4Runners.  The Daystar Competition Bump Stop absorbs a great deal of force and greatly lessens rear axle bottom outs.  The adapter and the Daystar bump stops are the same dimensions as a stock 1996-1998 4Runner factory bump stop.  The adapters are made entirely out of 1/4" hot rolled steel and welded together and are spray painted black.  New metric grade 10.9 bolts are included as well as a pair of Daystar Competition Bump stops and all the hardware needed to fasten them on as well.  They are not lower or limiting at all and are 100% bolt on.  Adapters painted if you purchase the bumpstops and unpainted if you purchase only the adapters

Why would I need these and are then going to make my suspension flex more on the RTI ramp?  The aftermarket bump stops will not make you a ramp champ. What they achieve is 2 fold. First they obviously lower the bump stops down to match your lift, so they actually work. The stock cones and bump stops with a 2.5” or 3” lift spring are more or less useless. Sure if you hit it hard enough or beat on it enough, you’ll bottom it out, but they are not working as Toyota designed them to with the suspension. The bump stops are designed to start early in the process to absorb the force that is projected into them. The stock bump stops are also the cheapest thing they could find and are of an inexpensive very hard material. So yes with a stock suspension cutting the cones down would be an improvement. On a lifted suspension they are too high up to work properly.

While these will NOT make you a ramp champ, they will however do the following.

1. Contact the axle sooner when one side is stuffed and actually push the opposite tire that will have less vehicle weight on it down harder gaining more surface contact. No travel is lost or gained due to the lower stop or the fact that they are polyurethane. Your truck will ramp stuff and droop exactly the same either way, stock or custom. But the vehicle with the custom stops will have a firmer foot print out on the trails, which the RTI ramp is not.

2. The bump stops being Competition Polyurethane will absorb a much greater amount of force than the very hard stock frame stops and cones. This comes into play in 2 areas, on the street over large potholes and dips you will bottom out very softly, not harsh like a stock 3rd Gen 4Runner. Secondly give you a huge advantage when employing the “Farmington Roll” or also known as Bumping It. When you approach an obstacle and your tires spin due to Moab slick rock, mud, moss, etc. and it is determined that a “Bump” is in order to clear the obstacle, the dropped poly stops clearly excel. When the 4Runner hits the obstacle with the small amount of momentum and the rear axle contacts the obstacle, the suspension cycles up due to the abrupt hit it just took and the rear axle heads into the bump stops. With the custom poly stops the force is completely absorbed and the vehicle rolls up the challenge. With the very hard stock stops the axle has a tendency to bounce back with the same amount of force that it was driven upward with, resulting in the 4Runner bouncing back and falling to the bottom of the obstacle, failing to climb it. Once again, nothing here for the RTI ramp.

"Well, how should I say this?  It appears that you have come up with a better fix for the harsh bottoming then Toyota has been able to come up with.  I pulled out the cones and installed your stops.  I went out looking for places that would make my truck bottom out and it appears to bottom out like it should and not that harsh jolt.  It feels like it should have felt from the factory."   -Gadget

"The 890s and 891s were never designed for the 4Runner due to the amount of lift you get. Once you go above the 2" range you should be lowering the bumpstops to keep from over compressing them. When the coils start dropping down to where they are touching each other, that is what causes them to go flat from coil bind." ARB Engineer from ARB in Seattle in an e-mail to Jayson Blanchard

Both of these solutions drop the stops 2".

Update: 3-29-2005, I finally used the Daystar KU09009 myself and was not real impressed.  Personally I feel the KU09014 bump stop is far superior.  You will not get as much up travel with the KU09009 even though the adapter is much smaller and the bump stop has more poly.  The KU09014 compresses much better. 

 

ENERGY SUSPENSION & DAYSTAR KU09009BK: Basically the same as the Daystar setup but these are not 100% bolt-on.  You must knock out the factory spot welded metric bolt and insert a 3/8" nut inside the frame bracket to compete the install.  You can knock out the nut with an air chisel or screw a bolt in part way and whack on it with a hammer until you break the spot welds loose.  Adapters shipped unpainted.

Applications:

These bump stops will fit:

1996-2002 Toyota 4Runners

Daystar KU09014BK Daystar KU09009BK or Energy Suspension 9-9104G
This design did not do well and has been discontinued.

 

Bolt-On Daystar KU09014BK Bump Stop installation:

1. Remove the stock Toyota frame mounted bump stops and bolt on the Sonoran Steel/Daystar creations.

2. If you have the center spring isolator cones you will want to pull those out of the springs as well. These bump stops can handle the load alone. The center cones are found on all 1999-2002 4Runners and 1996-1998 4Runners that had then installed during one of the various recall campaigns.  If you want a bit more lift, cut the lower bumper part off of the stock center comes and just reinstall the very top part above the rear coil.

3. Go hit some bumps!

 

Daystar Daystar KU09009BK or Energy Suspension 9-9104G Bump Stop installation: (Discontinued as the KU09014 is far superior)

1. Remove the stock Toyota frame mounted bump stops and remove the welded on nut inside the bump stop mounting bracket.  Try using an air chisel or put a dummy bolt in the nut only a few turns and hit it upwards with a hammer, separating the tack welds.  Bolt the adapter bump stop combo through the now nut-less stock bump stop mounting hole.  Use a standard English thread nut matching the stud on the bump stop to secure.  Place the adapter between the frame and the bump stop. 

2. If you have the center spring isolator cones you will want to pull those out of the springs as well. These bump stops can handle the load alone. The center cones are found on all 1999-2002 4Runners and 1996-1998 4Runners that had then installed during one of the various recall campaigns.  If you want a bit more lift, cut the lower bumper part off of the stock center comes and just reinstall the very top part above the rear coil.

3. Go hit some bumps!

 

 

Super Soft Bump Stop adapters and Daystar KU09014BK: $150.00 pair (Bump Stops Included)

US Postal Service shipping for these items for a flat $8.95, Domestic Mail only.

Typical production time, 2-3 days after payment received.

 

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e-mail me: steve@sonoransteel.com