Compatible with classic muscle cars and modern V‑8s
Fitment Notes
Requires welding or clamp‑in installation
Sold as a pair (both mufflers included)
Check clearance and local noise regulations before installing
Features
Hand‑polished 304 stainless steel construction
Ceramic‑wrapped, perforated core reduces high‑freq noise and resonance
Full straight‑through flow design offers minimal restriction
Bare steel embossed with classic SLP logo
Prized for deep, aggressive tone reminiscent of factory Loud Mouth units
Ultra‑durable build; limited lifetime warranty covers welds and corrosion
Specifications
Part Number: 31064
Inlet/Outlet Diameter: 2.5″ (center‑in/out)
Body Diameter: 4.5″; Length: 18.1875″ (~18.2″)
Material: 304 stainless steel
Weight: Approx. 11.3 lb per muffler
Warranty: Limited Lifetime for exhaust components
Included Components
2x SLP Loud Mouth II mufflers (pair)
Installation instructions
Product Description
The SLP 31064 Loud Mouth II mufflers are designed for enthusiasts seeking maximum exhaust flow with a throatier, race‑inspired sound. Featuring hand‑polished 304 stainless steel shells and a ceramic‑wrapped perforated core, they minimize high-frequency drone and in‑cab resonance--yet still produce an assertive exhaust note .
These bullet‑style mufflers are universally compatible with 2.5″ piping and can be welded or clamped in place. At approximately 18.2″ long with clean, embossed SLP branding, they fit elegantly in tight chassis spaces. While aggressive in tone, they come with a limited lifetime warranty--ideal for classic muscle rides or modern V‑8 swaps.
*Parts are for USA spec vehicles, please contact us to verify fitment on JDM & international models.
· · · SHIPPING · · ·
Free shipping across the contiguous 48 United States (excludes Hawaii and Alaska). Item(s) ships on the same day or within 1 business day. Delivery time is within 2 to 4 business days excluding next day deliveries. Orders over $750 require signature for delivery.
Canada customers - If eBay does not collect import & duty fees during checkout, the shipping carrier will collect them prior to delivery.
· · · RETURNS · · ·
Your complete shopping satisfaction is our #1 priority. If an item you ordered from us does not meet your expectations, please contact us within 30 days of receiving the item(s). If your order arrives damaged from shipping please contact us and we will provide a prepaid return label to send back for a replacement or refund.
Returned items must be in the original packaging (including plastic wrapped items) and in brand new condition.
Any returns received installed, mounted, used or missing components will be subject to return fee's.
· · · PAYMENTS · · ·
We accept all payment methods through eBay's payment system
PayPal, and all major credit cards/debit cards are accepted.
· · · FEEDBACK · · ·
Customer satisfaction is a top priority for us. If you have any issues with your order, please let us know. We will make every effort to resolve any problems and ensure you are satisfied.
· · · CONTACT US · · ·
We appreciate your business. If you have any questions, please message us through eBay and we will respond within 24 hours on weekdays. Feel free to browse our eBay store for other available items. Thank you again for choosing to shop with us!
