Sequential-fire design maximizes scavenging affect for maximum power. 1-3/4'' or 1-7/8'' primaries flow into 3'' collectors. Power Spear collectors included with some models (see info below). Available off-road Y-pipe clears frame connectors and connects to stock cat-back system. Requires two O2 simulators for rear O2 sensors.

Power Spear Collector Info Click to enlarge