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Thunder Tiger PRO -21BX-R (TT9475)
Designed to achieve the easiest operation and max performance over & over, the new PRO-21BX-R delivers an awesome raw power & durability!The new webbed reinforced compact crankcase is made for added wearing resistance and provides effective heat dispersion for longer runs. All PRO series engines are manufactured by automated computer-controlled machinery, using the highest quality materials and state-of-the-art CNC manufacturing techniques to deliver a power plant that looks and performs better. Precision mixture control carburettor makes adjustments simple; the crankshaft is lightened, and balanced to achieve a smoother and more efficient fuel mixture.The new 21 engine fits in the same mounting as the original. 21/.28 engines, with no additional weight - but delivers greater output
and higher practical rpm. The Pro-21BX-R is equipped with a built-in recoil starters ("X" type) for easy and quick start. FeaturesRear exhaustABC construction: Aluminium piston with Cr-plated brass cylinder linerHypereutectic machined Al-Si ringed pistonHigh-strength connecting rod with bushings pre-installedSG crankshaftOne-piece crankcase with squared-off cooling finsDual ball bearing-supported crankshaftMachined over-sized heat sink headBuilt-in pull starting back plateThree-needle valves slide valve carburettorState-of-the-art CNC machined components Specifications:Displacement(c.c. / cu.in.) 3.49 c.c. /. 213 cu.in. Bore(mm / in.) 16.26 mm / 0.640 in. Stroke(mm / in.) 16.8 mm / 0.661 in. Practical R.P.M.(R.P.M.) 3, 000 ~ 36, 000 rpm Output(BHP/RPM) 2.15 BHP / 30, 000 RPM
Weight(g/oz) 460 g / 16.23 oz Product Name/Code:PRO -21BX-R TT9475Manufacturer:Thunder Tiger
and higher practical rpm. The Pro-21BX-R is equipped with a built-in recoil starters ("X" type) for easy and quick start. FeaturesRear exhaustABC construction: Aluminium piston with Cr-plated brass cylinder linerHypereutectic machined Al-Si ringed pistonHigh-strength connecting rod with bushings pre-installedSG crankshaftOne-piece crankcase with squared-off cooling finsDual ball bearing-supported crankshaftMachined over-sized heat sink headBuilt-in pull starting back plateThree-needle valves slide valve carburettorState-of-the-art CNC machined components Specifications:Displacement(c.c. / cu.in.) 3.49 c.c. /. 213 cu.in. Bore(mm / in.) 16.26 mm / 0.640 in. Stroke(mm / in.) 16.8 mm / 0.661 in. Practical R.P.M.(R.P.M.) 3, 000 ~ 36, 000 rpm Output(BHP/RPM) 2.15 BHP / 30, 000 RPM
Weight(g/oz) 460 g / 16.23 oz Product Name/Code:PRO -21BX-R TT9475Manufacturer:Thunder Tiger
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