Originally Posted by Tancakar
Also large 21" wheel.
Both wheels are different.
The std is 120/70 19 front and 170/60 17 rear. The R is 90/90 21 and 150/70 ZR 18.
Front forks and rear shocks are also quite different. The only other significant difference not mentioned above is the seat, where the R is 1 piece and is more comfortable.