Description
Resonator
Perfect for applications with limited space. If you want to lower the sound pressure level (SPL) of your CrateMuffler(r)s, you can install this resonator. This compact bottle / bullet style resonator can also be used as a universal resonator in any system of this diameter. The Resonator is designed to attenuate overall sound. This is perfect for customers looking to reduce the sound level 2-3 dB(A). This straight-through design will not degrade the performance of your vehicle. Resonator dimensions 2.25" Center Inlet/ 3" Center Outlet, 4" Round, 10" Long Body 15" Overall Length. Un-Notched necks are designed for weld in installation. If clamping, use 3" wide band clamps 18003. Reversible design for installation flexibility. High-quality T-304 austenitic stainless steel for superior corrosion resistance. 100% welded construction for strength. Free Flow design for improved performance. High-temperature continuous-filament fiber (CFF) acoustic material for sound control. Natural mill finish can be brushed or polished prior to installation. There is no logo embossment on this part. Best of all, it's made in the USA and backed by BORLA(r)'s Million-Mile warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.
Additional Information
Resonator - Sound Level N/A Resonator - 2.25" Center Inlet/ 2.25" Center Outlet 3.5" Round x 10" Long Body 14" Overall Length Universal Part Reversible Design.
Part Type
Exhaust Muffler
Product Overview
Perfect for applications with limited space. If you want to lower the sound pressure level (SPL) of your CrateMuffler, you can install the Resonator Option. The Resonator Option is designed to attenuate overall sound. This resonator can also be used in any system of this diameter. This is perfect for customers looking to reduce the sound level 2-3 dB(A). This straight-through design will not degrade the performance of your vehicle. There is no logo embossment on this part. Reversible design for installation flexibility. High-quality T-304 austenitic stainless steel will never rust. 100% welded construction for strength. Free Flow design for improved performance. High-temperature continuous-filament fiber (CFF) acoustic material for sound control. Natural mill finish can be brushed or polished prior to installation. Best of all, it's made in the USA and backed by Borla's Million-Mile warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.
Data: v2 - Desc: v4.2 - Upd: 2026-11-07 17:21:36
Features
- Compact size is perfect for applications with limited space
- Un-Notched necks are designed for weld in installation. If clamping, use 3" wide band clamps 18003.
- Universal bottle / bullet style resonator. Reversible design.
- Use with BORLA(r) S-Type CrateMuffler(r) to achieve the Touring sound level
Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.
Specifications
Product Details
| Body Height (in.): | OEM |
| Body Height: | OEM |
| Body Length (in.): | OEM |
| Body Length: | OEM |
| Body Width (in.): | OEM |
| Body Width: | OEM |
| Construction: | All Welded |
| Description: | CrateMuffler; 2.25 in. In/Out; 3.5 in. Round x 10 in. Case Body; Center/Center; Resonator Option; T-304 Stainless Steel; |
| Grade Type: | Performance |
| Inlet Connection Type: | Pipe |
| Inlet Position: | Center |
| Inlet Size (in.): | 2.25 |
| Inlet Type: | OEM |
| Main Piping Diameter: | 2.250 in. |
| Material: | T-304 Stainless Steel |
| Muffler Count: | 1 |
| Off Road Use Only: | No |
| Outlet Outside Diameter: | 2.250 in. |
| Outlet Position: | Center |
| Outlet Size (in.): | 2.25 |
| Outlet Type: | OEM |
| Overall Length (in.): | OEM |
| Overall Length: | OEM |
| Part Number: | bor400937 |
| Shape: | Round |
| Title Extended: | CrateMuffler Resonator Option 2.25in Center/Center 3.5in Round X 10in Part # 400937 |
| Title: | CrateMuffler Resonator 2.25in Center Inlet/ 2.25in Center Outlet 3.5in Round X 10in Long Body |
Reference Information
| Reference Data (Provide these details to our support team) | |
|---|---|
| Brand Name/s | Borla, Borla Exhaust |
| StreetFX SKU | bor400937 |
| SFX Item ID | 4224755 |
| Accounting SKU | bor-400937 |
| Manufacturer SKU | 400937 |
| Manufacturer UPC | 808422009379 |
| Alternative References | 400937, BOR-400937 |
Resonator, Stainless Steel, Natural, 2.25 in. Center Inlet/Outlet, 3.50 in. Case O.D., 10.00 in. Case Length, Each
Borla CrateMuffler resonators are show-quality units from the maker of the world's first performance mufflers designed from scratch to optimize the sound and power of crate and custom motors. The resonators are constructed from aircraft-grade stainless steel to ensure a long-lasting showroom finish—and are available in a variety of inlet/outlet diameters. They can easily be maintained using Borla exhaust cleaner and polish. Finish off your CrateMuffler system with the intimidating rumble and power of a Borla resonator!
| Product Attributes | |
|---|---|
| UPC | 808422009379 |
| Brand | Borla |
| Quantity | Sold individually. |
| Part Type | Resonators |
| Product Line | Borla CrateMuffler Resonators |
| Resonator Finish | Natural |
| Resonator Material | 304 stainless steel |
| Resonator Inlet Position | Center |
| Resonator Outlet Position | Center |
| Manufacturer's Part Number | 400937 |
| Case Outside Diameter (in.) | 3.50 in. |
| Resonator Case Length (in.) | 10.000 in. |
| Resonator Inlet Diameter (in.) | 2.25 |
| Resonator Overall Length (in.) | 14.000 in. |
| Resonator Outlet Diameter (in.) | 2.25 |
Brochures
Compatibility
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