Yamaha have done a great job on the 250cc mill but in design department R25 lacks by big score (my opinion)
it looks good but not what we expected from a R series bike.
Look at other R bikes the mighty One (R1) The R6 they carry an aggressive & sharp styling which has became a trade mark for R series.
Even R15 & R125 carry that trait. Every time you look at them they look fresh just ready to attack the roads but R25 doesn't pulls the right string.
initially the bike looked great but now it doesn't appeals & looks more like curvy honda bikes.
p.s- this are my personal opinions.
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4. Cubication pure .... R25 is 249.6 cc 4-stroke 8 valve, two cylinder Double cam. Bore x stroke 60 x 44.1 mm ie.
5. Problems engine equipped with the latest technology R25 250cc class. Call it the intake manifold with a downdraft design that make burning faster, larger throttle body (32mm), 12 hole injectors, forged pistons and cylinders diacyl, deep oil pan bottom (below the oil helps position the center of gravity) and many others that can mzbro peek of the accompanying drawings. No wonder the power jumped up to 36PS (click for zooming) .... 







7. FI system on the R25 is fairly complete. In ECU device embedded in the fairing, no TPS sensor, IAPS, IATS, crankshaft position sensor, coolant temperature sensor, Oxygen sensor, lean angle sensor, speed sensor, and oil pressure switch. The latter is a special sensor to read the oil pressure that will detect early on if the pressure is weak to avoid damage to the cylinder head or other bowel akibar low oil pressure. The signal will be transmitted in the form of information via the speedometer ... 







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