R1's are same size but heavier due to the bigger (1000cc) and more powerful engine, than in the R6 (600cc)
r6 revs higher, but R1 is the king as far as uncompromised preformance goes.
R6 is also cheaper on insurance.
Both bikes are veeeeeeeery fast, r1 a tad faster and has better top speed due to more torque/hp
Oh.. and the r1 wheelies much better, even on the HWY in 2nd gear.. just open the trottle wide open and hold on tight.. with r6 u gotta really wind it and/or dump the clutch to get it up
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