Considering for the big difference in between of the 249cc Yamaha R25 also Yamaha R3, encountered to be for its latter model of powerplant which were given in such massive 8mm bore increase, in where for bore also stroke measuring about 68.0 x 44.1mm by such total displacement of 321cc, utilizing kind of transverse inline twin engine for the aim of propulsion.
For the bore or stroke ration quite similar to Yamaha R6, in 1.54:1, while for cylinder head sporting very shallow, in where indulged there valve angle , for 26mm intakes which poied over 12 degrees also for 22.5 mm of exhaust valves being set over 12.75 degrees.
For its steel diamond type of the frame will employ engine in equal to stresses structural member, by the swingarm that uses same length in accordance to wheelbase ratio same over Yamaha R1, which encountered to provides smoother anti squat force in allowing easier suspension in between of firm for such aggressive riding also for its soft commuting
While for KYB 41mm certainly nonadjustable, in larger size in compared to whole forks over its class that serves rigidity in the aim of better handling, while for KYB shock rear, 7 ways adjustable for such spring preload.
For braking duties, handled by such single two piston or slide pin Akebono caliper, that bites over single 298mm disc over front altogether with its single piston Akebono caliper of 220mm disc by rear.
For cast-aluminum of 10-spole wheels, shod by 110/70-17 Michelin Pilot Street tire for up front also 140/70-17 Michelin Pilot Street for the back, for the Michelins itself, reportedly OEM-specs tires which are designed mostly only for the R3. By its benefit of low 30.7 inch seat height also for its narrow midsection, the Yamaha R3 motorbike, seems small also manageable, which is ideal for such novice riders. While for bars, set over high side in the aim for comfort, legroom also available in fair bit, for the proper footpegs of sportbike.
For its Engine :
Type in Liquid-cooled DOHC transverse inline-twin, 4 valves per cyl.
Displacement for 321cc Bore x stroke of 68.0 x 44.1mm
Induction by Mikuni EFI, 32mm throttle bodies over single injectorper cyl.
For its Chassis :
Front tire in about 110/70-17M/C 54S
Michelin Pilot Street Rear tire of 140/70-17M/C 66S
Michelin Pilot Street Rake/trail of 25°/3.7 in. (95mm)
Wheelbase about 54.3 in. (1380mm) Seat height : 30.7 in. (780mm)
Fuel capacity there in about 3.7 gal. (14L)
Claimed wet weight of 368 lb. or 167kg MSRP: $4990
