They're perfectly good engines if you can actually GET them.

Mugen Seiki, Europe was the distributor.

You *may* be able to find them under the "BOSS" brand label a little easier.

The XR is a solid 5 port; the XRK work well in buggy.

If you liked how the Mario Rossi Ninjas and GRP Tuned engines ran, then you'll like how the REDS perform