I should imagine an oil cooler of some kind and possibly a larger radiator would be beneficial. I’d be tempted to fit wheel spacers to gain extra width and possibly smaller diameter tyres so the sand doesn’t soak up wanted power.
All depends on the kind of race I guess. Give us some more information, there are folk here do and have raced competitions, they’ll give you some good pointers for sure
98 300 Fourtrax 4x4
Custom built mud bike - Now sold.
2004 Foreman 450S
Fully overhauled (nut & bolt rebuild), 2” lift kit, 28” mega mayhems, ITP delta rims, ES floorboards, 22” LED lightbar, Pyle Bluetooth sound system.