Designed for rotary engine equipped vehicles, but can be used on other applications. Reversible design for installation flexibility. Patented Multicore design for maximum power. Recommend for high horsepower applications. T-304 Stainless steel will never rust. 100% welded construction for strength. High temperature T-304 stainless steel wool packing for sound control. There is no logo embossment on this part. 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.

Borla XR-1 Multicore Muffler 400374

Specifications:

Body Height	6.250 in.
Outlet Position	Center
Title Extended	XR-1 Multi-Core 4in Center-Center 16inx6.25in Round - Rotary Engine Equipped Racing Muffler Part # 400374
Tip / Outlet Finish	N/A
Shape	Round
Prop 65 Yes/No	Yes
Prop 65 (C, R or CR)	CR
Prop 65 - Short Label	Proposition 65 Warning.JPG
Prop 65 - Long Label	WARNING: This product in the physical form it is sold does not present a hazard. However, operations including, but not limited to welding, brazing, or thermal cutting can expose you to chemicals including Chromium, Nickel, Cobalt, Arsenic, Cadmium and Lead which are known to the State Of California to cause cancer, birth defects and other reproductive harm. For more information go towww.P65Warnings.ca.gov
Overall Length	21.000 in.
Outlet Type	Single Center Outlet
Outlet Outside Diameter	4.000 in.
Body Length	16.000 in.
Off Road Use Only	No
Muffler Count	1
Material	T-304 Stainless Steel
Main Piping Diameter	4.000 in.
Inlet Type	Single Center
Inlet Position	Center
Inlet Connection Type	Pipe
Grade Type	Performance
Construction	All Welded
Body Width	6.250 in.
Title	XR-1 Multi-Core Racing Muffler 4in Center Inlet/ 4in Center Outlet 6.25in Round x 16in Long Body Rotary Engine Equipped Vehicles
Description_SHO	XR-1 Multi-Core
Description_INV	BorlaXR-1 Multi-Core Muffler
Description_DEF	Exhaust Muffler
Description_DES	XR-1 Multicore Muffler
Description_ASM	XR-1 Multi-Core Racing Muffler For Rotary Engine Equipped Vehicles - 4" Center Inlet/ 4" Center Outlet 6.25" Round x 16" Long Body 21" Overall Length. Universal Part. Reversible Design.
Description_EXT	XR-1 Multi-Core Racing Muffler For Rotary Engine Equipped Vehicles - 4" Center Inlet/ 4" Center Outlet 6.25" Round x 16" Long Body 21" Overall Length. Universal Part. Reversible Design.
Description_MKT	Designed for rotary engine equipped vehicles, but can be used on other applications. Reversible design for installation flexibility. Patented Multicore design for maximum power. Recommend for high horsepower applications. T-304 Stainless steel will never rust. 100% welded construction for strength. High temperature T-304 stainless steel wool packing for sound control. There is no logo embossment on this part. 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.