The following are known Action Replay Codes for Off Road Challenge on Nintendo 64 (N64).

Device Compatibility: Action Replay & GameShark

Always Place 1st
80103c570000

Infinite Turbos
80103ebb000a

Max. Acceleration
8012c49f000a

Max. Shocks
8012c4a7000a

Max. Nitros
8012c49b000a

Max. Speed
8012c4a3000a

Max. Tires
8012c4ab000a