Damn!! I bet those fly with that B.B. mod!! Cornering i should imagine is next to impossible:laugh:Nope, no official Honda 500R ATV ever existed for sale to the general public that I'm aware of. However, you can put an FT500/XR500 sleeve and 4-valve head onto a ATC350X/TRX350D jug & cases, swap in a stroked crank and XR500 piston and make your own 500 cc screamer.
Yep, they run pretty strong in a stretched ATC350X or TRX250X frame. The great thing about that motor mod is you get to start with a standard factory bore, so oversize pistons and head gaskets are readily available come rebuild time. The upper 38T timing chain sprocket (14321-428-000) on the FT/XR500 motor is interchangeable with the 14321-HA0-010 sprocket used on the 250/350 motors as well. Camshafts interchange between each head too. Check valve-piston clearances if you swap a 500 cam into a 350 head.Damn!! I bet those fly with that B.B. mod!! Cornering i should imagine is next to impossible:laugh: