I have noticed that it is getting harder to shift gears.  I have around 4000 miles on it and never seemed to have an issue until now.  I do not have pressure on the transmission at the time. Any suggestions?  Thanks

[2015 Z Force 800 53/Trail EPS]

If it is only harder to shift while the engine is running, then look to the oneway bearing in the primary. Most haven't made it past a thousand miles...let alone 4000. If it makes no difference running or not, change to a lighter (like a 75-90) synthetic gear lube and check the adjustment as well as the engine mounts. Never force the shifter.

Thanks for the advice.  If I shut the engine down it shifts just fine.  Is it a major project to replace
Thtthat bearing. 

[2015 Z Force 800 53/Trail EPS]

Thanks for the advice.  If I shut the engine down it shifts just fine.  Is it a major project to replace
Thtthat bearing. 

No. Pretty easy. Will need to remove the primary retainers and slip the parts off down to that one-way, then back on with everything in the right direction and order. Then correctly torque the retainers.