Review: KTM (RLR) Coolant Recovery Tank

Boiling over in slow, technical terrain, is nothing new to many dirt bikers. In fact, most KTMs (and a few other makes) have no means to recover lost coolant when things get too hot — the coolant is simply vented to the ground. Enter the KTM Coolant Recovery Tank. (C.R.T.).

Okay, the first thing we need to address is that this is not really a (made by) KTM product. In fact, this coolant recovery tank is made by RLR Products. I have no idea where RLR is located (it’s a well kept secret on their website), but lets not dwell on that.

The RLR Coolant Recovery Tank kit contains a lightweight plastic (polyethylene, if you really want to know) bottle of about 8 ounce capacity. The bottle is equipped with leak-proof brass fittings mounted via some sort of grommet interface which does a great job allowing for significant play in case the hose decides to go for a walkabout.

The kit:

RLR Coolant Recovery Tank kit
RLR Coolant Recovery Tank kit

Six feet of quality hose is included in the package, along with a few zip-ties. The install instructions are pretty straightforward:

  • Find a suitable location for the recovery tank. The curved end of the bottle is supposed to be lower than the other end, but I don’t know why
    • I placed mine on the right side of the airbox/battery compartment, but I have seen others place the bottle behind the front number plate or under the rear fender
  • Route the hose from the radiator vent nipple (by the cap) to the lower (curved) brass fitting of the C.R.T. and cut to fit
  • Run hose from the other end of the C.R.T. to any convenient and safe place for it to vent
    • I ran the hose all the way back to the factory KTM vent nipple on the frame because:
      1. I could not figure out where to vent out to the rear of the bike without drilling a hole
      2. I figured I could carry a few more ounces of coolant in the long line back to the frame :)

Here’s how it turned out:

Here you can see the general route taken by the supply hose (blue) and return hose (white).

ktm coolant recovery tank install
ktm coolant recovery tank install


A closer view. I used some left-over hose to feed the water pump.

ktm coolant recovery tank hoses
ktm coolant recovery tank hoses

Coolant Recovery Tank mounting position and hose routing around airbox.

ktm coolant recovery tank position
ktm coolant recovery tank position

So far, I haven’t had any issues with the bike boiling over or with the product itself. Random checks while on the trail have seen the tank half full of coolant which leads me to believe the C.R.T. is doing its job. I have only been on a couple rides in under 12°C weather since installing the RLR Coolant Recovery Tank but expect to be very happy with it once the summer months roll in.

Highly Recommended :)

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