The pipes that I ordered are typical Arrow quality. Getting rid of the CAT on the BMW 1300 GSA is the only way to make the bike sound good because the stock collector/ CAT has a huge built in muffler chamber around the CAT. You will need the exhaust valve eliminator but all of the O2 sensors are still functional. No tune, no check engine light, 1500 miles. All that aside, I ended up calling a few times to see about shipping and then to check status. Every time I called, Bill answered the phone. He was super helpful and a genuinely nice guy. You are buying a product form a fellow enthusiast and the customer service is exactly what you would hope for. Thanks, Bill.