Borla 40947 XR-1 Sportsman Racing Muffler – 3.5" Center/Center

When every fraction of a second matters, the Borla 40947 XR-1 Sportsman Racing Muffler delivers the performance edge you need. Built for demanding motorsports applications, this muffler combines Borla’s race-proven design with premium materials for unmatched performance and durability.

Constructed from T-304 austenitic stainless steel, the XR-1 resists rust and heat degradation far better than lower-grade steels. The 3.5-inch inlet/outlet center-center configuration, paired with a straight-through, reversible design, maximizes exhaust flow and horsepower while keeping backpressure to a minimum.

The XR-1’s internal race core is engineered for maximum flow and a powerful exhaust note, making it an ideal choice for circle track, drag racing, and other competitive applications. The reversible layout offers installation flexibility, while Borla’s Million-Mile Warranty provides peace of mind rarely seen in racing components.

Specifications:

• Inlet/Outlet: 3.5" center/center

• Reversible, straight-through design

• T-304 stainless steel construction

• Built for maximum flow and horsepower

• Ideal for competitive motorsports

• Million-Mile Warranty

Why Buy from Fenix Motorsports:
We specialize in premium performance exhaust components, backed by expert product support, competitive pricing, and fast shipping. Every order is driven by our core values: Progress, Excellence, and Integrity.