I raced a lot of XC type races on my 400EX and beat a lot of 450R….however one place the 450R shines is open stretches, they will pull away and make passing more difficult. My son raced very good on my old Race 400EX but then moved up to the R and that same year won the Quad B championship here locally. If your serious about racing, as much as I like the 400EX I would recommend you step up to the 450R, your going to end up there anyway sooner or later. Best wishes to you racing….
1984 Honda 200M ATC
1985 Honda 200X ATC
1986 Honda 200X ATC
1999 Honda 406EX....11:1, Web Cam / Hardened rockers. Ported. WB CDI. CT Racing header. WB E-Series slip on. Lonestar swinger.
2001 Honda/KTM 520 Hybrid Quad. Its like a 400EX but twice the horsepower.
2014 Artic Cat Wildcat Trail XT