---2.5" Bore throughout with twin 4.5" tailpipes ---Flared pipe end to fit the OEM system sealing with a donut gasket creating a tight seal ---Fits from the catalytic converter back ---Free flowing system to get the most from the 4U-GSE / FA20 boxer engine ---Engineered to improve throttle response and increased power and torque across the entire RPM range Compatible with: ---Toyota GT86 2012+ models ---Subaru BRZ 2012+ models ---Scion FRS 2012+ models.
