Just want to let you guys know my experience with Peter at XMCarbonSpeed was horrible. I've purchased the following 2 items:

1. Carbon wheels --> http://www.xmcarbonspeed.cn/275-plus-boost-mtb-bike-wheels-carbon-clincher_p0138.html

2. Carbon seatpost   --> http://www.xmcarbonspeed.cn/zeroback-straight-carbon-seatpost_p0039.html

They seem to be fine for 3 weeks. Both have cracks on them. When I reach out for replacement, Peter has refused to do so. He demanded me to send back both products to him (in China !!!!!). So, he can determine the cause of them, and decide whether a replacement should be sent. Would you do business with them???

Please reach out if you have any question about this seller, and I would love to share my experience with them in more detail.