look is unchanged , but a brand-new EURO5-compliant engine and host of improvements drive it on , just as Soichiro and Takeo would have wanted .
A new air-cooled SOHC engine design , with ECU setting , intake and exhaust to match , gains the Super Cub 125 EURO5 compliance . It produces slightly more power , and is more efficient , returning fuel economy of 1.5 litres / 100km ( WMTC mode ). The ACG output is also uprated .
The classic styling is unchanged , and standard-fit pillion seat and footpegs are now added . Revised spring rates for front and rear suspension smooth the ride on rougher city streets .
Efficient and durable , the Super Cub 125 ’ s new 124cc air-cooled engine combines the bottom-end ( with redesigned crankcases ) of the current Japanese-market C110 with the SOHC two-valve cylinder head and top-end of the latest MSX Grom . Bore is set at 50mm , stroke at 63.1mm with compression ratio of 10.0:1 . Peak power of 7.2kW ( a 0.1kW increase ) arrives @ 7,500rpm , with peak torque of 10.4Nm @ 6,250rpm .
Smoothing airflow on the clean side , the new airbox , designed to match the new engine , is smaller and combines with the new connecting tube and new injector position to improve driveability .
The outward appearance of the muffler - one of the many elements of the Super Cub ’ s ‘ mythology ’ - stays the same while the internals are re-worked ; two catalysers were in place on the previous engine but , with the gain in combustion efficiency for EURO5 compliance , a single , more efficient catalyser is used . The ECU has new programming to maximise performance and efficiency and the Alternating Current Generator ( ACG ) output increased .
The gearbox remains a 4-speed unit ( with neutral at the bottom ) and – in true Super Cub tradition – is operated via ‘ automatic ’ centrifugal clutch , without the need for a clutch lever . At standstill the rider simply selects the gear required with the left hand foot lever and , as the throttle is opened , the clutch operates automatically and does so through each ratio change , up or down . Final drive ratio is 2.50 with 14T drive and 35T driven sprockets . A helical primary gear reduces ‘ mechanical ’ noise .
The Super Cub C125 engine returns amazing fuel economy – 1.5litres / 100km ( 66.7km / l ) ( WMTC mode ) giving a range of approx . 250km from the 3.7 litre fuel tank .
The Super Cub 125 ’ s time-tested , evocative styling – defined instantly by the leg-guards and fully enclosed mechanical parts – remains unchanged , and is a design with one word in mind : ‘ universality ’. In other words , it has to be easy for a wide range of people to use . A key
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