XR-1 Multi-Core Collector Racing Muffler - (4x) 2.375" Inlets/ (1x) 4.5" Outlet 6.75" Round x 18" Long Body 20" Overall Length. Universal Part.
This is the HOT set up in drag racing. This patented, award and race-winning vacuum Wave Collector was designed to replace your current open header collector and serves as a power producing merge collector and muffler -- all in a single unit. The technology in this unit results in pulling air through the engine faster, which creates more power. When an exhaust valve opens, an energy wave is created from the expanding combustion gases. When this wave encounters a lower pressure area such as a larger collector pipe or the atmosphere, a reversion wave is reflected back toward the exhaust valve. Borla(r)'s Vacuum Wave Collector Muffler ensures this wave's "anti-node" reaches the exhaust valve at the precise time for its lower pressure to help fill the combustion chamber with a fresh charge and to further extract spent gases from the chamber via a vacuum effect. Made with a patented, award and race winning multicore high flow design just like the standard XR-1 muffler for maximum power. This muffler is recommended for Dragsters, Altered, and Roadsters. Accepted in NHRA, IHRA, Hot Rod Series, Brackets, Super Chevy, and NSCA. Recommend for high horsepower applications. T-304 Stainless steel will never rust. 100% welded construction for strength. T-304 stainless steel wool for sound control. Best of all, it's made in the USA. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.
Application Summary:
| Year |
Make/Model |
| XR-1(r) |
Multicore Collector Racing Muffler - (4) 2.375" Inlets (1) 4.5" Outlet 6.75" Round x 18" Long Body 20" Overall Length. Universal Part. |
| Attributes |
| Body Height |
6.750 in., 6.750 in. |
| Body Height (in.) |
6.75 |
| Body Length |
20.500 in., 20.500 in., 20.500 in. |
| Body Length (in.) |
20.5 |
| Body Width |
6.750 in., 6.750 in., 6.750 in. |
| Body Width (in.) |
6.75 |
| California Proposition 65 |
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov |
| Construction |
All Welded, All Welded, All Welded |
| Country of Origin (Primary) |
US |
| Emission Code |
Not in CA |
| Grade Type |
Performance, Performance, Performance |
| Harmonized Tariff Code (Schedule B) |
8708925000 |
| Hazardous Material Code |
N |
| Inlet Connection Type |
Pipe, Pipe, Pipe |
| Inlet Inside Diameter |
2.380 in. |
| Inlet Inside Diameter (in.) |
2.38 |
| Inlet Outside Diameter |
2.380 in. |
| Inlet Position |
Center, Center, Center |
| Inlet Size (in.) |
2.38 |
| Inlet Type |
Single Center, Single Center, Single Center |
| Life Cycle Status Code |
Available to Order |
| Main Piping Diameter |
2.375 in., 2.375 in., 2.375 in. |
| Main Piping Diameter (in.) |
2.375 |
| Material |
T-304 Stainless Steel, T-304 Stainless Steel, T-304 Stainless Steel |
| Muffler Count |
1, 1, 1 |
| NAFTA Preference Criterion Code |
B |
| Off Road Use Only |
No, No, No |
| Outlet Outside Diameter |
4.500 in., 4.500 in., 4.500 in. |
| Outlet Outside Diameter (in.) |
4.5 |
| Outlet Position |
Center, Center, Center |
| Outlet Size (in.) |
4.5 |
| Outlet Type |
Single Center Outlet, Single Center Outlet, Single Center Outlet |
| Overall Length |
25.500 in., 25.500 in., 25.500 in. |
| Overall Length (in.) |
25.500 in. |
| Position |
N/A |
| SDR Required Flag |
N |
| Shape |
Round, Round, Round |
| Tip / Outlet Finish |
N/A, N/A, N/A |
| Title Extended |
XR-1 Multi-Core Racing Muffler Collector Quad 2.375in Inlet/ 4.5in Outlet 6.75in Round x 18in Long Body Part # 40703 |
| GTIN |
00808422407038 |
