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Ships within 48 hours · Estimated delivery Jul 5 - Jul 10
For Your Every Summer RSVP, with Code: SUMMER15
Description
Borla 04-07 STi XR-1 Cat-Back ExhaustPart# 140075 is the more Aggressive "S Type" Cat Back(tm). The mellow "Touring" Cat Back(tm) exhaust is part# 140053 Borla(r) Performance once again leads the industry with a high flow performance exhaust for the hot Subaru WRX and WRX STI. This Cat Back(tm) system, Borla(r) #140075, is custom designed by Borla(r) engineers for the 2. 5L turbocharged 4 cylinder engine with automatic and manual transmissions. Winning on racetracks around the world has
Part# 140075 is the more Aggressive "S-Type" Cat-Back(tm). The mellow "Touring" Cat-Back(tm) exhaust is part# 140053 Borla(r) Performance once again leads the industry with a high flow performance exhaust for the hot Subaru WRX and WRX STI. This Cat-Back(tm) system, Borla(r) #140075, is custom designed by Borla(r) engineers for the 2.5L turbocharged 4-cylinder engine with automatic and manual transmissions. Winning on racetracks around the world has given Borla(r) a leg up on the competition with trickle down technology from the world's fastest cars. The unique design is a direct bolt-on fit that meets all emission requirements. The system has shown significant flow and performance improvements by virtue of Borla(r) XR-1 patented technology utilizing 3" tubing that exits with a super looking Borla(r) logo embossed 4"angle cut, rolled edge, single round polished T-304 stainless steel tip. More flow means more power, and if you tune this turbocharged super import, that flow will simply allow even more power. When you get a close look inside this muffler, you can see the patented Borla(r) XR-1 multi cores -- that look says total performance. Increased fuel mileage is an added benefit. And, one more thing, it has a great sound, too, but then you've come to expect that from Borla(r). Add a Borla(r) header (#17217) for even more performance. Borla(r) Performance Industries, the original pioneers of high quality T-304 austenitic stainless steel (superior to T-409 or aluminized steel) free flow exhaust utilizes its patented award and race winning technology to deliver quality, sound, performance gains and enhanced fuel economy all with an easy bolt-on installation. All Borla(r) street products carry the famous Borla(r) written million-mile warranty.Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 351 reviews
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Product Reviews
★★★★★ 5
Excellent choice
Size: silicone wire 40ft, Color: Yellow
This stuff is great. I love the silicon insulation. It doesn't curl or tangle.
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Reviewed in the United States on October 20, 2025
★★★★★ 4
Solders nice, extremely flexible maybe too flexible
Size: silicone wire red 20ft and black 20ft, Color: Red and Black
The wire solders very nicely. It's very flexible, perhaps a little too flexible. I used this wire in a couple speaker building projects. I like to put the wire in a drill and twist the wires together, it's a nice look and helps with wire management. The too flexible part makes it so the wire doesn't stay tightly twisted. To remedy that I use heat shrink at either end to at least keep the wires somewhat together.
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Reviewed in the United States on January 12, 2021
★★★★★ 5
Quality heat resistant wire.
Size: silicone wire red 25ft and black 25ft, Color: Red and Black
Quality, heat resistant silicone wire for my heating coil wine bottle cutting project. I didn’t need very much, but provided me the best price and option. No regrets.
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Reviewed in the United States on November 16, 2025
★★★★★ 5
Best for 12S high current battery wires
Size: silicone wire red 25ft and black 25ft, Color: Red and Black
High quality flexible silicone wire. Perfect for high current large motor & battery wires.
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Reviewed in the United States on May 23, 2026
★★★★★ 5
Loong jumper test cables.
Size: silicone wire red 25ft and black 25ft, Color: Red and Black
Over-kill makes nice tools. This is good tinned fine stranded wire with quality silicone insulation. Five-star stuff, without buying some expensive large quantity minimum from a high-end wire manufacturer.
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Reviewed in the United States on December 6, 2025