Check out Petr Trojan’s moto-cross art at the web page above. He’s added some new prints of some old Czech moto-heros.
Petr has very nice art of motocross, speedway, and rally car racing, including some charcoal renderings of modern MX riders. But I really like his ’60s and ’70s-era motocross and scrambles work. Very nice. He says he will have prints available soon. I hope he does.