Magazine Q3-2021 -- ONE -- paperturnV2 - Flipbook - Page 37
LEFT: Timbren Active Offroad® rubber bump stops
RIGHT: SumoSprings SSR-623-40
TIMBREN VS. SUMOSPRINGS
Timbren offers a reliable aftermarket bump stop that I’m sure many of you
are familiar with. These bump stops are progressive, which means that the
more they compress, the more they resist compression. This is actually
what offers a better ride, more so off-road.
The main difference in the SumoSprings is that although they are
also a progressive bump stop, they adjust automatically to load or
compression. This comes in handy on the trail because this type of bump
stop won’t limit your travel as much as the competitors. Also, the SumoSprings provide a much smoother contact patch on the axle. We found
them to be noticeably smoother than the Timbrens.
As I mentioned before, these bump stops have a progressive spring rate
that adjusts automatically. This means that the patented micro-cellular
urethane is continually adapting to how much load is upon it at any given
time. This alone is a huge benefit when it comes to offroad applications
because you will have more control of your up travel.
If you plan on off-roading your 4Runner, then you should invest in
aftermarket bump stops. The bump stops by SumoSprings are a perfect
alternative to stock bump stops as they provide the protection you need
from harsh bottom-outs all while providing enhanced ride comfort. Even
the mild to rough terrain getting to the actual trailhead is going to be much
more enjoyable with a set of these.
SumoSprings have shock damping properties which means the
ride quality off-road is going to
be a night and day difference.
provides a plush ride over bumps and rough roads while providing
complete control of the vehicle. When you hit something like a speed
bump, the SumoSprings will help soak up the bump, but when you’re doing
a lot of cornering, the SumoSprings will help provide rigidity.
If you are going with an overland build, then consider getting some
SumoSprings bump stop replacements plus Coil SumoSprings. These
inserts are installed into the middle of the coil spring and have a similar
purpose as airbags. They will stiffen your suspension, which keeps the
4Runner from handling like a boat when it’s loaded down.
If you plan on towing frequently, some kind of spring reinforcement is
needed. The reason for this is the 4Runner was not designed to support a
ton of weight. Airbags, or in this case airless airbags, are designed to
support the weight while towing, which in turn gives you more control. This
is a must-have for those long trips while pulling a camper or even short
trips towing your boat to the lake.
While towing, these bump stops act as airbags but without the air.
This will not only provide a much more enjoyable ride, but your rear-end
will no longer sag. If you are looking at towing, you may want to consider
the black SumoSprings bump stops. The bump stops we received are the
blue SumoSprings. The black SumoSprings are designed to support more
There are many guys who have installed airbags for towing but
unlike airbags, SumoSprings are guaranteed to not pop or lose air. If you’ve
ever owned airbags, you also know how sketchy it can be working on them.
Not to mention, the amount of time an install takes.
If you are looking to increase the stability of your 4Runner while
towing heavier applications, you may want to consider getting the Coil
SumoSprings as we mentioned above. These won’t support the weight of
a trailer, but they will prevent harsh bottom-outs, body roll, nose dive, and
On-road driving with the SumoSprings is just as enjoyable as off-road
driving. The highly durable closed cell microcellular polyurethane material
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