Exhaust› Headers, Manifolds and Components

V8 Roadsters

NA & NB Miata Long Tube Headers

$1,190.00

SKU: V8R-175

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The V8 Roadsters NA & NB Miata Long Tube Headers are constructed from 304SS with 3/8 inch thick flanges. They feature 1-¾ inch primaries and a 3 inch merge collector with welded O2 bungs. These headers are designed to work with V8 Roadsters LSx NA/B conversions and utilize a slip-style collector for improved ground clearance.
Show original supplier description
The V8 Roadsters LSx Long Tube Headers are a performance upgrade for NA and NB Miata models, specifically designed for V8 Roadsters LSx conversions. Constructed from durable 304SS, these headers feature robust 3/8 inch thick flanges and 1-¾ inch primaries that merge into a 3 inch collector. Integrated O2 bungs are welded for sensor installation, and the slip-style collector design enhances ground clearance. Installation may require the removal of the steering shaft and is recommended to be performed from the bottom. Loosening the engine and lifting it, or potentially loosening and suspending the subframe, may be necessary to facilitate installation depending on the specific engine bay configuration and installer's working area. A specific GM starter part number (88878289) is noted for compatibility. It is important to note that GTO and F-Body long style headers will not fit. An optional Jet Hot Ceramic Coating is available for an additional cost, which includes a three-week service time as the headers are shipped to and from Jet Hot. The coating is black. These headers are built by Kooks for V8 Roadsters and have shown documented gains of around 20hp on a stock LS6 compared to shorter, smaller primaries.
Vehicle Symptoms
  • Exhaust smell entering cabin after V8 swap
  • Noticeable power loss at high RPM
  • Check engine light on after engine conversion
  • Excessive heat under hood from exhaust
  • Rough idle with V8 conversion
Relevant Conversations
  • V8 Roadsters long tube headers for Miata
  • NA Miata LS swap exhaust headers
  • V8R-175 header installation guide
  • Miata V8 conversion exhaust clearance issues
  • LSx headers for NB Miata forum
  • Best headers for V8 Roadsters kit
  • Miata V8 long tube header vs shorty
  • V8 Roadsters header steering shaft removal
  • Miata LS swap exhaust leak symptoms
  • V8R-175 vs other Miata V8 headers

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandV8 Roadsters
Part NumberV8R-175
CategoryExhaust
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

Buy with Confidence

Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy

Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

View Full Shipping Policy