they will help out with the stability of the machine but will wear your wheel bearings and stuff out a bit faster. most sports are wider by a tad. the stability with the bigger tires will increase but will make the wearing even faster since there is a lot more stress with the spacers and the tires together. I would get 1" on each side if you want to get them. they will help and also minimize the pressure on the components. I would not recommend getting them for the front either because they make the turning radius terrible and adds some bumpsteer to the machine. steve
2019 Maverick X3 XDS Turbo R
2003 TRX 400EX
2016 HONDA RANCHER