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Mid-Sized Four Stroke Comparison Chart

ENGINE

BORE

STROKE

WEIGHT

RPM range

est. Horespower

Saito 100 29.0 25.0 19.4 oz.(550g) 2100-9300 1.8
YS 110 30.4 24.8 27 oz (750g) 2000-9500 2.20
Saito 91 28.2 24.0 18.3 oz (520g) 2000-11,500 1.6
YS 91 27.7 24.8 27 oz (750g) 2000-13,000 2.0
OS 91 27.7 24.8 23.0 oz(655g) 2000-12,000 1.6
OS 91 Pump 27.7 24.8 23.9 oz (678g) 2000-12,000 1.6
Thunder Tiger 91 23.8 28.3 25.7 oz (730g) 1800-12,000 1.6
ASP 91 27.7 24.8 22.57 oz (640g) 2000-11,000 1.3