These folks have awesome parts for your YerfDog Spiderbox. I have purchased multiple parts including suspension, new a-arms, front hubs, a completely rebuilt GY6 150CC motor plus performance parts for the 150CC GY6. If they get it wrong they will make it right. I recently ordered a header pipe for another Spiderbox project and they inadvertently shipped me a scooter exhaust header. After a short back and forth they realized the error and made it right. I would not hesitate to purchase from these folks at all. A bit pricy but you get quality parts and excellent service. Happy customer.