
Vendor:Speedzone Performance LLC
THERMAL R&D 2012-2015 Honda Civic Si - 2.5" - 4 Door - Catback Exhaust
B180 - C180 System Specifications:
- 2.5" Diameter Tubing
- 4.5" Diameter Tip
- 304 Grade Stainless Steel
The 9th Generation Si exhaust is the first Honda system that introduced our True Helmholtz Technology, offering a top of the line sound in this catback exhaust system. The 2.5” system is made of T304 Stainless Steel with a resonated midpipe and Thermal's signature Helmholtz chamber. This sound control combination was engineered to achieve the desired tone at launch and acceleration, while cancelling the dreaded drone during cruising.
The 4.5” angle cut tip completes the Thermal’s variation on the 9th Gen exhaust. Available in both 4 door and coupe, the system’s tubing is brush finished while mufflers and tip are polished. Hangers mount up to the OEM allowing for and easy direct fit install.
Thermal R&D Exhaust systems are designed with quality of sound and manufacturing as our number one goal. Built from T304 Stainless Steel, the fit and finish of our products are designed for performance on both the street and the track. Understanding that the exhaust is the starting point for many builds, our high-performance exhaust will allow additional modifications to perform at their peak. We engineer our products with the goal of achieving the best all-around product for a given application.
Ships within 1-2 business days.
100% Genuine Parts
Fitment Guaranteed

THERMAL R&D 2012-2015 Honda Civic Si - 2.5" - 4 Door - Catback Exhaust
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FAQs
Please read our FAQs page to find out more.
Are OEM products more expensive than aftermarket alternatives?
OEM products might have a higher upfront cost compared to aftermarket parts, but their superior quality and durability often make them a more cost-effective choice over time. Investing in OEM ensures you’re getting parts specifically designed for your vehicle, which can lead to better performance and longevity.
Can I purchase OEM parts online or do I need to visit a dealership?
You don’t need to visit a dealership to get OEM parts. You can conveniently purchase genuine OEM components from authorized distributors and reputable online retailers like Turbo Tech Performance. Our online store provides a wide selection of high-quality parts delivered straight to your door.
Are parts from brands like Mopar, ACDelco, and Motorcraft interchangeable between different vehicle brands?
No, parts from Mopar, ACDelco, and Motorcraft are typically designed for specific vehicle brands. It’s crucial to ensure compatibility with your vehicle’s make and model by checking part numbers and consulting with a knowledgeable expert.
Can I install OEM parts myself, or is it better to have a professional handle it?
While some OEM parts can be installed by DIY enthusiasts, the complexity of installation can vary. For the best results and to ensure proper fitment and performance, we recommend having a trained mechanic install the parts, especially if you’re unfamiliar with automotive repairs.
Do OEM parts come with a warranty?
Yes, many OEM auto parts come with a manufacturer’s warranty that covers defects or issues. Be sure to check the warranty details for each part at the time of purchase, and keep your receipt for any potential warranty claims.


