Borla Midgets / 3/4 Midgets / Mini Sprints / Dwarf Cars XR-1 Racing Bullet Muffler

SKU: BOR40641

Mufflers

BOR XR-1 Mufflers...

Borla

Borla Midgets / 3/4 Midgets / Mini Sprints / Dwarf Cars XR-1 Racing Bullet Muffler

SKU: BOR40641

Mufflers

BOR XR-1 Mufflers...

LOW STOCK! Est Ship 4-7 days. HURRY! LOW STOCK. This item is in limited stock at one of our distribution centres. The ETA is the approximate time required to prepare your order for dispatch.

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Description

XR-1(r) Multi-Core Bullet Racing Muffler. 2.5" Center Inlet/ 2.5" Center Outlet (no neck) 3.5" Round x 14" Long Body 16.75" Overall Length. Designed for use on compact applications where no tail pipe or turn down is needed, or weld on your own tail pipe or turn down. Can be used on vehicles with rotary engines. It features BORLA(r)'S patented Multi-Core 3 tube design for maximum flow, horsepower, and torque. The Multi-Core portion of XR-1(r) mufflers flows better than straight tubing. Recommend for high horsepower applications. T-304 Stainless steel for superior corrosion resistance. 100% welded construction for strength. high temperature T-304 stainless steel wool for sound control. There is no BORLA(r) 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.

Product Overview

Designed for use on Midgets, Mini Sprints, Dwarf Cars, and other compact applications where no tail pipe or turn down is needed. Patented free flow multicore design for maximum power. Recommend for high horsepower applications. T-304 Stainless steel will never rust. 100% welded construction for strength. Hight temperature T-304 stainless steel wool 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.

Product Details

Body Height (in.):	3.5
Body Height:	3.500 in.
Body Length (in.):	14
Body Length:	14.000 in.
Body Width (in.):	3.5
Body Width:	3.500 in.
Construction:	All Welded
Description:	XR-1Ã‚Â® Stainless Racing Bullet Mufflers
Grade Type:	Performance
Inlet Connection Type:	Pipe
Inlet Outside Diameter:	2.500 in.
Inlet Position:	Center
Inlet Size (in.):	2.5
Inlet Type:	Single Center
Main Piping Diameter:	2.500 in.
Material:	T-304 Stainless Steel
Muffler Count:	1
Off Road Use Only:	No
Outlet Outside Diameter:	2.500 in.
Outlet Position:	Center
Outlet Size (in.):	2.5
Outlet Type:	Single Center Outlet
Overall Length (in.):	19
Overall Length:	19.000 in.
Part Number:	bor40641
Position:	N/A
Prop 65 (C, R or CR):	CR
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
Prop 65 - Short Label:	Proposition 65 Warning.JPG
Prop 65 Yes/No:	Yes
Shape:	Bullet
Tip / Outlet Finish:	N/A
Title Extended:	XR-1 Bullet 14inx3.5in Round - Racing Muffler Part # 40641
Title:	XR-1 Multi-Core Racing Muffler Bullet 2.5in Center Inlet/ 2.5in Center Outlet 3.5in Round x 14in Long Body

Application Summary

XR-1 Multicore Bullet Racing Muffler - 2.5" Center Inlet/ 2.5" Center Outlet (no neck) 3.5" Round x 14" Long Body 16.75" Overall Length. Universal Part.

Part Type

Exhaust Muffler

Data: v4.2 - Upd: 2026-10-14 02:09:53

Features

2.5" Center Inlet/ 2.5" Center Outlet (no neck) 3.5" Round x 14" Long Body 16.75" Overall Length
Bullet style muffler with neck on inlet end only
Multi-Core 3 tube internal design. High temperature T-304 stainless steel wool for sound control.
Universal muffler. No BORLA(r) logo embossement.
Use on compact applications where no tail pipe or turn down is needed, or weld on your own

Specifications

Product Attributes - Brand: Borla
Product Attributes - Manufacturer's Part Number: 40641
Product Attributes - Part Type: Mufflers
Product Attributes - Product Line: Borla XR-1 Racing Mufflers
Product Attributes - UPC: 808422406413
Product Attributes - Muffler Material: 304 stainless steel
Product Attributes - Inlet Diameter (in.): 2.50 in.
Product Attributes - Outlet Diameter (in.): 2.50 in.
Product Attributes - Inlet Quantity: 1
Product Attributes - Outlet Quantity: 1
Product Attributes - Internal Construction: Straight-through core
Product Attributes - Inlet Location: Center
Product Attributes - Outlet Location: Center
Product Attributes - Case Shape: Round
Product Attributes - Reversible: No
Product Attributes - Muffler Finish: Brushed
Product Attributes - Case Exterior Length (in.): 14.00 in.
Product Attributes - Case Outside Diameter (in.): 3.50 in.
Product Attributes - Overall Length (in.): 20.00 in.
Product Attributes - Outlet Style: Straight tip
Product Attributes - Remanufactured: No
Product Attributes - Quantity: Sold individually.
Product Attributes - Notes: Multi core design. Features stainless steel sound absorbing material to protect against burnout.

Reference Information

Brand Name/s	Borla
StreetFX SKU	bor40641
SFX Item ID	4224839
Supplier Item Code	4224839
Manufacturer SKU	40641
Manufacturer UPC	808422406413
Alternative References	xr-1

Brochures

Primary brochure

Compatibility

XR-1 Multicore Bullet Racing Muffler - 2.5" Center Inlet/ 2.5" Center Outlet (no neck) 3.5" Round x 14" Long Body 16.75" Overall Length. Universal Part.

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