Engine SHUPA 125 RS + Engine SHUPA 125/129 RSC

Racing Engine with Takegawa RS head and excellent parameters
Version 125/129 RSC - with big forged crankshaft
Engine SHUPA 125/129 RSC - Best solution for short tracks



FORGED CRANKSHAFT FOR ENGINE RSC

Engine technical parameters and tuning description:

4-stroke one-cylinder, capacity 124,8 ccm , bore 54 mm, stroke 54,5 mm, max. power up to 15 PS **
engine 125/129 RSC : capacity 128,7 ccm , bore 54,00 mm, stroke 56,2 mm
piston ε =9,5, =12,2 , two valve Takegawa RS head with canal surface tuning
camshafts R20 - IN240° / EX240°
intake valve D26 mm, exhaust valve D22,5 mm , stem diameter 4,5 mm
forged valve valve springs and retainers from TITAN-ALU alloy
crankcase, shifting, starting, and further parts are impoved for speedway using
5-plates clutch with reinforced springs, 3. or 4. speed gearbox, racing ignition with outer rotor
alternatively digital ignition with advance curve and RPM limiter

** max. engine power depends on the adjustment of the engine and accessories


Included engine accessories:  

CDI unit, ignition coil with plug
connecting cables, shift pedal
oil cooler with hoses







Each engine is checked and adjusted on engine brake DYNOmite