Interesting,i initially thought the bike felt/sounded slightly different after installing wossner but it was so negligible i wasnt sure if it was my imagination,i used a wossner on 1st topend but still have 20hrs or so til rebuild so will compare then.the recessed area in the piston(balancing,weight reduction,voodoo port?i havent a clue!)is a different shape than the vertex but i have no idea if it makes any difference as its below the rings?only theory i can think of is it may have a subtle effect on drawing crankcase mix into the skirt area?or the volume of the mix in the skirt area?
It doesnt particularly matter as both work well,but am curious.
Most probably its far simpler...they need a point of difference!
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2013 ec200r
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