BORLA 400287 ProXS ProXS Muffler 2.25" Dual Inlet/ 2.25" Dual Outlet, 4" x 9.5" Oval, 19" Long Body, 24" Overall Length. Internal X-Pipe. Universal Part. Reversible Design.

BORLA Turbo XL Mufflers are designed for supreme street performance, offering aircraft-quality high quality austenitic stainless steel, all-welded construction and more for increased horsepower and torque. Independent tests prove maximum flow capability. Turbo XL models are recommended for larger engines. Turbo models for smaller motors up to small-block V8s.