This company's after sales service is one of the worst I have ever come across . The RC which was sold had a one way bearing which seized after a couple of pulls on the starter cord . Their so called fault finding correspondence went round in circles with them not wanting to admit any liability as far as parts were concerned. We even sent a video of trying to start the RC with the pull cord not retracting. Being an engineer it was obvious what the problem was even though I had no experience with RC's . We bought the new part from ebay and the car engine now starts. After asking for a refund for the price of the bearing, we were told that because we didn't purchase it from Nitrotek , they wouldn't refund the cost of the replacement part. Bearing in mind that we spent 3 weeks following their so called fault finding and eventually losing patience , their excuse not to refund us didn't come as a surprise. Avoid this company if you expect reasonable after sales service.