Originally Posted by Rich Browne
The official info:
Scott Kimbrow has run both the Xenon and Xenon R (pre-production versions). The "R" is a road rocket. Good milage and loads of power. For release info watch the RB site. The Xenon's have been discussed in the "RB Engine thread" listed below. I hope this has helped.
Hi Rich, thanks for the info. How about the standard xenon compare to the R version, ofcourse AAC is faster than ABC sleeve but it will not last long as said. I'm looking for this engine for club racing so any suggestion is much appreciated.