I ordered a kit from them and found out the hard way that their staffing is basically non-existent. Never answered the phone, did not respond to emails, nada.
After looking at a "not filled" order status for days, which also listed an incorrect international shipping address that I was trying desperately to get corrected, I cancelled the order on a Tuesday at 8am pacific time. I immediately got an auto response email acknowledging that my message was received. They shipped anyway at 5pm that day.
Finally got the attention of people there, they claimed they had cancelled the shipment and the order was being returned. I ordered from another source. Their claim was pure BS. The kit was delivered to my freight forwarder 5 days later. So I ended up and buying and paying import taxes etc. on two kits.
Sorry forum, I know they advertise. But gasbike was for me an understaffed nightmare of a "business" to deal with. I hope your experience, if you go that route, is a lot better than mine. Perhaps if gasbike sees enough posts like this one they will make some attempt to become a little more responsive.