Product Reviews
The new YS 91SR-3DS is an amazing engine! We were able to achieve more power and a little better fuel economy. We went through several revisions to get this engine perfect. I wanted to make sure we were able to get a sizable improvement over the SR.
Right now the Tuned muffler to use with the new 3DS is still the SB-19. I will be doing some more testing with Tetsuo Hatori over the next few months to see if we can make sizable improvement’s over the current SB-19.
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I have been asked by YS to help develop the YS56. This took over a year to do and after several revisions we are happy with the end result. Anyone who buys this engine should be very pleased with the smooth power of delivery.
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