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Old 10-07-13, 22:28
Pleiades Pleiades is offline
XT-Moto SuperStar
 
Join Date: Aug 2010
Location: North Norfolk
Posts: 5,320
Pleiades is on a distinguished road
Interestingly in the last week Yamaha has revealed a crossplane twin cylinder engine, which is very likely to be around the 650cc mark and putting out somewhere in the region of 70bhp.

http://www.motorcycledaily.com/2013/...anese-meeting/

Could it be that the XT660Z could evolve into a twin cylinder machine, to compliment the XT1200Z, with a three cylinder MT-09 engined Tenere sitting in the middle...