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What's New?
ARP Bolts
Power Slot Rotors
HASport Mounts
Ground Control
What's Hot?
Exedy Clutch
ACT Clutch
Thermal Exhaust
APEXi Exhaust
TiAL Wastegates
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Borla Exhaust
| Product Description | Inlet Diameter (ID) | Outlet Diameter (OD) | Primary Tube OD | Case Size | Diameter | Part# |
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| XR-1® Stainless Collector Muffler |
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| SHORTY / Full Chassied Cars (Accepted in NHRA, IHRA, Hot Rod Series, Brackets, Super Chevy, NSCA) |
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| 2" | 3 1/2" | | 14" | 6 1/4" | 40998 |
| 2 1/8" | 3 1/2" | | 14" | 6 1/4" | 40997 |
| 2 1/4" | 4" | | 14" | 6 3/4" | 40976 |
| 2 3/8" | 4 1/2" | | 14" | 6 3/4" | 40977 |
| 2 1/2" | 5" | | 14" | 6 3/4" | 40784 |
| STANDARD / Dragsters, Altereds, Roadsters |
|---|
| 2" | 3 1/2" | | 18 1/2" | 6 1/4" | 40702 |
| 2 1/4" | 4" | | 20 1/2" | 6 3/4" | 40728 |
| 2 3/8" | 4 1/2" | | 20 1/2" | 6 3/4" | 40703 |
| 2 1/2" | 4 1/2" | | 20 1/2" | 6 3/4" | 40743 |
| XR-1® Stainless Racing Dragster Headers |
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| DOWNSWEPT |
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| | | 2 1/4" | | | 17105 |
| | | 2 3/8" | | | 17106 |
| UPSWEPT |
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| | | 2" | | | 17103 |
| | | 2 1/4" | | | 17104 |
| | | 2 3/8" | | | 17107 |
| | | 2 1/2" | | | 17109 |
| XR-1® Stainless Header/Collector/Muffler Systems |
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| DOWNSWEPT / Dragsters, Altereds |
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| 2 1/4" | 4" | 2 1/4" | | | 17082 |
| 2 3/8" | 4 1/2" | 2 3/8" | | | 17095 |
| UPSWEPT / Dragsters |
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| 2" | 3 1/2" | 2" | | | 17035 |
| 2 1/4" | 4" | 2 1/4" | | | 17036 |
| 2 3/8" | 4 1/2" | 2 3/8" | | | 17096 |
| 2 1/2" | 4 1/2" | 2 1/2" | | | 17098 |
| XR-1® Stainless Racing Bullet Mufflers |
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| Midgets, 3/4 Midgets, Mini Sprints, Dwarf Cars |
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| 2 1/4" | 2 1/4" | | 14" | 3 1/2" | 40640 |
| 2 1/2" | 2 1/2" | | 14" | 3 1/2" | 40641 |
| XR-1® Stainless Shoot-Out Racing Mufflers |
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| Large Displacement Full-Bodied Cars with 4 1/2" & 5" Collector, NOS |
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| 4 1/2" | 4 1/2" | | 16" x 5 1/2" x 8 1/2" | | 40769 |
| 5" | 5" | | 16" x 5 1/2" x 8 1/2" | | 40770 |
| XR-1® Stainless Sportsman Racing Mufflers |
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| OFFSET / NHRA Stock Eliminator and Super Stock, Sprints, Midgets |
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| 3" | 3" | | 14" x 4" x 8" | | 40078 |
| 4" | 4" | | 14" x 4" x 8" | | 40080 |
| OVAL / All Full-Bodied Cars |
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| 2 1/2" | 2 1/2" | | 12" x 4 1/2" x 7 7/8" | | 40941 |
| 2 1/2" | 2 1/2" | | 16" x 4 1/2" x 7 7/8" | | 40942 |
| 3" | 3" | | 12" x 4 1/2" x 7 7/8" | | 40943 |
| 3" | 3" | | 16" x 4 1/2" x 7 7/8" | | 40944 |
| 3 1/2" | 3 1/2" | | 12" x 4 1/2" x 7 7/8" | | 40945 |
| 3 1/2" | 3 1/2" | | 16" x 4 1/2" x 7 7/8" | | 40946 |
| 4" | 4" | | 12" x 4 1/2" x 7 7/8" | | 40947 |
| 4" | 4" | | 16" x 4 1/2" x 7 7/8" | | 40948 |
| XR-1® Stainless Sportsman Racing Mufflers |
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| ROUND / All Race Venues Requiring Highest Flow Muffler, Space Allowing |
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| 3" | 3" | | 15" | 5" | 40085 |
| 3 1/2" | 3 1/2" | | 15" | 5" | 40086 |
| XR-1® Stainless Junior Dragster Racing Mufflers |
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| FULL SIZE / 8, 9, 10, and 11 Second Bracket |
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| 3 Core | 1 3/4" | 2 1/4" | | 13" | 4 1/2" | 40483 |
| 4 Core | 1 3/4" | 2 1/4" | | 15" | 4 1/2" | 40484 |
| XR-1® Stainless Junior Dragster Headpipe |
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|
|---|
| | | | | | 60072 |
| XR-1® Stainless Turndowns/Turnouts |
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| Designed to Deflect Exhaust Gases Away from Valence/Body Panels |
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| 3 1/2" | | | 7" length | | 20145 |
| 4" | | | 7" length | | 20146 |
| XR-1® Stainless Multicore Racing Mufflers |
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| OVAL / All Full-Bodied Cars |
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| 3" | 3" | | 16" x 4 1/4" x 7 7/8" | | 40575 |
| 3 1/2" | 3 1/2" | | 12" x 4 1/4" x 7 7/8" | | 40726 |
| 3 1/2" | 3 1/2" | | 16" x 4 1/4" x 7 7/8" | | 40727 |
| ROUND / All Race Venues Requiring Highest Flow Muffler, Space Allowing |
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| 3 1/2" | 3" | | 12" | 6 1/4" | 40720 |
| 4" | 4" | | 12" | 6 1/4" | 40740 |
| 4" | 4" | | 16" | 6 1/4" | 40741 |
| XR-1® Stainless Race Adapters |
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| 3" | 3 1/2" | | 6" | | 60062 |
| 3 1/2" | 4" | | 6" | | 60063 |
| Universal Performance Mufflers |
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| TURBO |
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| 2" | 2" | | 13 1/4" x 4" x 9 1/2" | | 40651 |
| 2" | 2" | | 14" x 4 1/4" x 7 7/8" | | 40657 |
| 2 1/4" | 2 1/4" | | 13 1/4" x 4" x 9 1/2" | | 40652 |
| 2 1/4" | 2 1/4" | | 14" x 4 1/4" x 7 7/8" | | 40658 |
| 2 1/2" | 2 1/2" | | 13 1/4" x 4" x 9 1/2" | | 40653 |
| 2 1/2" | 2 1/2" | | 14" x 4 1/4" x 7 7/8" | | 40659 |
| 2 1/4" | 2 1/4" | | 13 1/4" x 4 1/4" x 7 7/8" | | 40981 |
| 2 1/2" | 2 1/2" | | 13 1/4" x 4 1/4" x 7 7/8" | | 40980 |
| TURBO XL |
|---|
| 2 1/4" | 2 1/4" | | 19" x 4" x 9 1/2" | | 40664 |
| 2 1/2" | 2 1/2" | | 19" x 4" x 9 1/2" | | 40665 |
| 3" | 2 2 1/4" | | 19" x 4" x 9 1/2" | | 40670 |
| Borla Boomers |
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| THUMPER (Oval) | 2 1/4" | 4" Side Round | | 14" x 4 1/2" x 7 7/8" | | 40057 |
| ROCK-IT (Round) | 2 1/4" | 4 1/2" Round | | 14" x 6 3/4" x 6 3/4" | | 40058 |
| SPIT FIRE (Oval) | 2 1/4" | 3" Dual DTM | | 14" x 8 1/2" x 5 1/2" | | 40059 |
| BLOW TORCH (Oval) | 2 1/4" | 4" Side Round | | 14" x 8 1/2" x 5 1/2" | | 40060 |
| WAILTAIL (Oval) | 2 1/4" | 5" Side Round | | 14" x 8 1/2" x 5 1/2" | | 40061 |
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