+ 15% power, great gain at low revs.
New piston squish area optimized
0.25 head gasket instead of 1mm to increase compression
CDI microprocessor
Cup titanium exhaust valve
Mounting with recommended carburetor Molkt 24 or PHBH26 or Dellorto Keihin PE26
Pilot tester Comment:
Greg: I stay in 3 (where I had to downshift to 2) and I clear the height of the curves
Assignment:
YX140-1P56FMJ
YX149-1P56FMJ-5
YCF140-2009/10
YCF150-5 2009/10
UPOWER 140
UPOWER 149
