882
The only multiple of 6 is 882 (6 x 147).
1956
(623) 252-6049 - 15530 W Roosevelt St #D106, Goodyear, AZ, 85338, USA
First, if you know it is a 1988 RM why are asking for the year. Second, it must be a 17 digit vin number to decode what year it is (if you didn't know if was a 1988 already).
I'm searching for the same answer. On my frame it reads 'rc12a - 106948' mine has to be one of these years - 86, 87, 88, 89 because it has a rear drum and front disc, the swingarm is the thicker, weird shaped type with the diagonal line on each side. It also has a light blue frame, but it may be a custom job. The rear spring has been painted black. It is yellow underneath. I think it has a newer 82cc engine as it reads 'd106 - 120686' and it is dark grey in colour. What a nice bike though, loads of new and uprated parts. Goes like a little rocket. Any help would be nice.