This Borla universal resonator has a 2.75in center/center, straight-through design in a compact 5in round x 10in body for tight spaces. T-304 stainless steel with continuous-filament fiber (CFF) acoustic material and 100% welded construction. Un-notched necks are designed for weld-in installation, or clamp on with 3in wide band clamps (18005, not included); a notched version is 401342. The reversible design adds install flexibility, and the natural mill finish can be brushed or polished. Made in the USA.
Specifications
| Type | Universal straight-through resonator |
| Material | T-304 stainless steel, CFF acoustic material |
| Inlet / Outlet | 2.75in center/center |
| Dimensions | 5in round x 10in long |
| Necks | Un-notched (weld-in); clamp with 3in wide band clamp 18005 |
| Finish | Natural mill (brushable or polishable) |
| Part Number | 401338 |
| Warranty | Borla Million-Mile Warranty |
Shipping
- In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Backordered items ship as soon as stock lands — contact us for lead times.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30-day returns on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
- Installed or used parts can’t be returned — confirm fitment before you install.
- Special orders and custom items are final sale.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Refund Policy
