S-Type Cat-Back(tm) Exhaust System For 1986-1991 Chevrolet Corvette (C4) 5.7L V8 Automatic/ Manual Transmission Rear Wheel Drive Coupe/ Convertible (EXCEPT ZR1).
Borla(r) Performance Industries Cat-Back(tm) system for the celebrated 1986-1991 C4 Corvette equipped with a 5.7L V-8 engine has been engineered to work with either the popular manual transmission or the automatic. The premium, high-quality, T-304 Austenitic stainless steel system is easy to bolt on, is a direct replacement for the much heavier (by some 20lbs.!) stock system. A 3" diameter front pipe is mounted just after the catalytic converter leading to a Y-pipe, which splits into two 2-1/2" pipes exiting on each side of the rear. The muffler and tip assemblies use a 10"x 5" diameter round muffler on each side of the vehicle, with polished T-304 stainless steel rectangular, rolled edge, angle cut tailpipe tip at each split rear exit. Tests have shown an exciting 41% increase in flow for dramatic improvement in power or fuel economy. That now famous, aggressive Borla(r) growl and sexy look proclaim this block may be small, but it means all business we guarantee it for a Million-Miles! With race-bred technology that has been transferred from the many successful Borla(r) race programs, it was no accident that this Borla(r) system has won several major Corvette exhaust shootouts. Included in this great and storied past are such famous efforts as the C5-R Race Team that has dominated LeMans along with the Bondurant Corvette program at the Bob Bondurant School of High Performance Driving. Only what you would expect from Borla(r), the most winning exhaust in racing.
Application Summary:
| Year |
Make/Model |
| 1986-1991 |
Chevrolet Corvette |
| Attributes |
| California Proposition 65 |
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov |
| Construction |
All Welded, All Welded |
| Country of Origin (Primary) |
US |
| Emission Code |
Not in CA |
| Exhaust Type |
Cat-Back System, Cat-Back System |
| Exit Position |
Split Rear, Split Rear |
| Exit Style |
Single Split Rear Exit, Single Split Rear Exit |
| GTIN |
00808422400824 |
| Grade Type |
Performance, Performance |
| Harmonized Tariff Code (Schedule B) |
8708925000 |
| Hazardous Material Code |
N |
| Inlet Inside Diameter |
3.000 in., 3.000 in. |
| Inlet Inside Diameter (in.) |
3 |
| Inlet Size (in.) |
3 |
| Life Cycle Status Code |
Available to Order |
| Material |
T-304 Stainless Steel, T-304 Stainless Steel |
| Muffler Type |
Straight-Through, Straight-Through |
| NAFTA Preference Criterion Code |
B |
| Off Road Use Only |
No, No |
| Outlet Outside Diameter |
2.500 in., 2.500 in. |
| Outlet Outside Diameter (in.) |
2.5 |
| Outlet Size (in.) |
2.5 |
| SDR Required Flag |
N |
| System Type |
Cat Back, Cat Back |
| Tail Pipe Diameter |
2.500 in., 2.500 in. |
| Tail Pipe Material |
Stainless Steel, Stainless Steel |
| Tip / Outlet Finish |
Polished T-304 Stainless Steel, Polished T-304 Stainless Steel |
| Tip Diameter |
6.600 in., 6.600 in. |
| Tip Size |
6.6 in. |
| Title Extended |
C4 Corvette 1986-1991 Cat-Back Exhaust System S-Type Part # 140082 |
| Tubing Diameter |
3.000 in., 3.000 in. |
