I Have A Crf250x My Son Has Crf 100 He Is 13yrs Old And Has Bin Ryding 2 1/2 Yrs.we Both Like Trail Riding Endoro And Just Woods Riding.now My Son Has A Cr125 We Have Not Taken It Trail Riding Yet.i Jeted It To The Chart For Temp And Sea Leval.runs Good .i Now This Is A Race Bike But Seems Frendly Also For Trail Riding.some Times We Do Rocky Slow Trails .i Now The Cr125 Is Not Good For This.do Other Peaple Run Cr125 For This Trail And Woods Riding. Any Sug. On Seting Bike Up For This.poss Some Exhaust Systems .my Son Likes The Power Band And Seems Ok Riding It.just Wondering Lots Of Times We Ride 50-60 Miles On Trals. Any Feed Back Thanks.