In Stock
- In Stock Items. Ships Today. (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- In Stock Items, Including at a Supplier. Ships In a Few Days. (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- All Items, Including Not In Stock (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Make/Model
Make/Engine
Filter Options
- Made In USA (1)

Selected Filters

Availability

- In Stock Items. Ships Today. (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- In Stock Items, Including at a Supplier. Ships In a Few Days. (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- All Items, Including Not In Stock (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Filters
Make/Model
Make/Engine
Filter Options
- Made In USA (1)

Borla Polyphonic Harmonizers

5.0 out of 5 stars 2 Customer Reviews

Borla polyphonic harmonizers replace the mufflers behind the primary mufflers in the S-type system to attain the louder sound level of an ATAK system. The technology utilizes patented units that contain pipes of different diameters and lengths, creating multiple exhaust notes that harmonize to deliver a clean, rich, full-bodied sound. Borla polyphonic harmonizers are manufactured from 304 stainless steel.

Showing In Stock Items. Show All 1 Items.

Results 1 - 1 of 1

Borla Polyphonic Harmonizers 60680

Borla Polyphonic Harmonizers 60680

Polyphonic Harmonizer, Secondary Muffler, ATAK Sound, Chevy, GMC, 6.2L, Each

Part Number: BOR-60680

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 2/16/2026 if shipped by air

Page 1 of 1