The Borla XR-1 Sportsman Shorty is an ultra-compact racing muffler with a 3.5in center inlet and 3.5in center outlet on a 5in round body (8in body, 13in overall). XR-1 Raceline flow-through technology balances sound and power in the smallest possible package for tight installs. Un-notched necks for weld-in installation; T-304 stainless with a reversible design and no logo embossment.
| Type | XR-1 Sportsman Shorty racing muffler |
| Inlet/Outlet | 3.5in inlet / 3.5in outlet |
| Configuration | Center / Center - un-notched (weld-in) |
| Body | Round - 5in diameter - 8in body - 13in overall |
| Material | T-304 stainless steel - reversible - no embossment |
| Part Number | 40004S |
Shipping: In-stock orders placed before 3 PM EST ship the same day, and everything else ships within 24 hours. Standard, expedited, and overnight options are available at checkout. Backordered items ship as soon as we get them back in stock. Contact us for lead times. See the full Shipping Policy.
Returns: 30-day returns on new, unused items in original packaging. See the full Refund Policy.
