Thunder Tiger CORP. -- PRO-25 NO.9120

PRO-25

Item No. 9120
Specification
Displacement(c.c. / cu.in.) 4.07 c.c. / .248 cu.in. 
Bore(mm / in.) 18.0 mm / 0.709 in. 
Stroke(mm / in.) 16.0 mm / 0.630 in. 
Practical R.P.M.(R.P.M.) 2,500 ~ 18,000 rpm 
Output(BHP/RPM) 0.75 BHP / 17,000 RPM 
Weight(g/oz) 285.8 g / 10.08 oz 

Introduction

PRO series engine feature aerospace-quality ball bearings to properly support the crankshaft at high RPM. Schnuerle-boost combustion porting provides a combination of power and fuel economy. Pro Series engines are equipped with twin ball bearings, twin needles and ABN-type piston and cylinder that provides years of trouble-free performance.

Spare Parts List