What are the expected gains going from stock everything to a Brock’s Full Exhaust and PCV with Map in a GSX-R1000? I know there are a few more factors involved in this equation but I would like rough estimate. Thanks Generally around 10-15 horsepower gain. Share : Related Knowledge Base Posts -Can I use a Brock’s Flash without a Brock’s Exhaust?Can I put the Brock’s Performance logo on my race suit and/or other items?What gear change can I do to my 2007 GSX-R1000 with the stock length chain?