WHAT IS IT? The IMS Coolant Recovery tank for
KTMs does exactly what it says it does. If your bike
overheats on a hot day, in deep sand, in sticky mud or
from excessive clutch usage, the tank captures the water
that boils out of the radiator cap, then mysteriously
recycles it back into your radiator.
WHAT’S IT COST? $99.40.
CONTACT? (800) 237-9906 or www.imsproducts.com.
WHAT STANDS OUT? Here’s a list of things that
stand out with the IMS Coolant Recovery tank.
(1) Parts. The IMS kit comes complete with the
plastic recovery tank (with fittings), a button-head bolt,
six zip-ties, 48 inches of 1/8-inch clear tubing, 24 inches
of 7/32-inch clear tubing, 24 inches of black tubing and
36 inches of safety wire. We only used the safety wire
to fish the clear plastic tubing up through the frame’s
( 2) Concept. The trick aspect of IMS’ KTM Recovery
tank is that it’s designed to slip up inside the downtube
of the KTM’s frame. Once installed the IMS tank is
invisible to the naked eye and totally protected from
any kind of abuse.
( 3) Science. The cooling circuit in a bike’s radiators
has a maximum volume. If the water in the radiator
overheats, it expands and builds up pressure under
the radiator cap. It can depress the spring. When this
happens, the water will gush out of the radiator as steam
or water. Before long your engine will run out of water
and seize. To stop this from happening, coolant recovery
tanks are added down-line on the overflow tube. The
water being pushed out of the radiator cap is captured in
the recovery tank and the magic occurs once the engine
and water cool down. Through a phenomenon known
as thermo-siphoning, the water in the recovery tank is
sucked back into the radiator by the negative pressure in
the system (much like sucking soda through a straw).
( 4) Good stuff. The IMS recovery tank prevents the
loss of coolant due to engine overheating. Engines can
overheat because of high altitude, hot weather, heavy
loads on the engine (like sand), excessive clutch usage,
clogged radiators, low water levels or broken impellers.
Every MXA test rider liked that the IMS catch tank was
tucked safely out of harm’s way.
( 5) Installation. IMS includes complete instructions.
Follow them religiously, especially the part where you
have to drill a small hole in your KTM downtube.
( 6) Performance. Most MXA test riders don’t have
overheating issues, but for the few who do, the IMS
recovery system was a godsend.
WHAT’S THE SQUAWK? We had two minor quibbles.
(1) Since we had to remove the gas-cap vent fitting
from the right side of the frame to use the hole for the
new overflow lines, we had to install a pre-drilled Works
Connection steering stem bolt for the gas cap vent hose.
( 2) Measure very carefully before drilling the hole in your
downtube. IMS says it will include a template to mark
the exact location of the hole.
Who needs this? Every factory bike has a
recovery tank. Most offroad teams run catch
tanks to compensate for slow-going in the
woods. Any rider who races in sand, high
temperatures or revs his bike (even in the pits)
should consider it. For the average rider doing
IMS KTM COOLANT RECOVERY TANK
five-lap motos, it isn’t a must-have; however, if
you’ve ever overheated your bike, you might be
a coolant recovery tank candidate.
MXA TEAM TESTED