Cannot Establish a Secure Connection

The Internet Browser you are using cannot establish a secure connection to or JavaScript is disabled which will prevent you from being able to Log In or Checkout. If JavaScript is enabled the problem is likely due to SSL 3.0 being your default SSL setting. This makes you vulnerable to the "POODLE exploit" and to ensure your security, it is not allowed on our site. Please change your browser security settings to not allow SSL 3.0 and check to make sure that JavaScript is enabled. You can also update your browser using these links.

In-Store Pickup Location Close

Borla Collector/Mufflers 40977

Borla 40977 - Borla Collector/Mufflers
  • Exhaust Pipe Sizing with Summit Racing

    Exhaust Pipe Sizing with Summit Racing

Now Playing: Exhaust Pipe Sizing with Summit Racing

Loading media

In progress
Get Free Shipping with Your Order over $99!

Collector Muffler, Stainless Steel, Polished, 4 Into 1, 2.375 in. Inlets/4.5 in. Outlet, 14 in. Long, Each

Estimated Ship Date: Today Would you rather pick it up? Select Location

  • This part is normally shipped directly from the manufacturer / Supplier.

  • Order this item and get free delivery and handling on your entire order! Oversize fees also waived on this item. Valid on orders shipped in the contiguous United States.

View Similar Products

Brand: Borla

Manufacturer's Part Number: 40977

Part Type: Collector Mufflers

Product Line: Borla Collector/Mufflers

Summit Racing Part Number: BOR-40977

UPC: 808422409773

Tuneable: No

Inlet Quantity: Four

Inlet Size: 2.375 in.

Outlet Quantity: One

Outlet Size: 4.5 in.

Collector Muffler Length (in): 14.000 in.

Crankcase Evacuation Tube Welded In: No

Collector Muffler Material: Stainless steel

Collector Muffler Finish: Polished

Quantity: Sold individually.

In-Store Pickup: Choose In-store pick-up (OH, GA, NV) on our web site.

Since the dreaded muffler rule is coming to more and more classes, it makes sense to run a muffler proven to reduce sound and free-up horsepower. Ideal for dragsters and roadsters, Borla's fully welded XR-1 collector/mufflers are made from T-304 stainless steel and replace the 4-into-1 collector on your headers. The XR-1s are also suited to Sprint Cars and other Circle Track classes that have room for them. If you run an econo/bracket-style dragster, you can get an XR-1 attached to a stainless steel header. This upswept design is mandrel-bent from the same stainless steel as the muffler.


Some parts are not legal for sale or use in California on any pollution-controlled motor vehicles

Back To Results
Email this page Close