You are looking for a pitbike for around 1000 dollars Should you buy a big brand bike kawasaki klx110 Yamaha ttr110 suzuki drz 110 or should you buy an off brand pit bike pitster pro Orion sikk?

Stick with the klx. It has the most after market parts available and if you break something Kawasaki has parts to fix it. Same with Yamaha and Suzuki but the Kawi is your best bet. Stay away from the off brand crap, they are throw away bikes. No parts to fix them and they will fall apart.