Arrow 72113PD Stainless Steel Collector Pipe for Honda CRF 250 R 14-17Arrow Racing Collector Collectors Collectors and pipes are a most important component of an exhaust system, making it possible to reach very important gains in terms of power and torque. Made in AISI 304 stainless steel and, for competition Full Titanium systems, in titanium, Arrow collectors design comes from the experience gained and the results achieved in years of races at all levels, with the un replaceable touch of the master mechanics working