SKU: 4308
Thermal R&D 4″ Dia x 8″ Long x 3″ Inlet Dual Wall Flat Cut Exhaust Tip – Polished
The Thermal R&D 4308 is a premium dual-wall flat cut exhaust tip designed for custom builds or upgrading existing aftermarket exhaust systems. Crafted in the USA from high-grade T304 stainless steel with a mirror-polished finish, this tip features a 4″ diameter outlet, 3″ diameter inlet, and 8″ overall length for a bold, aggressive appearance. The dual-wall construction provides superior durability, heat resistance, and a clean look without discoloration from exhaust soot. Perfect for Ford, Dodge, Chevy, or universal applications needing a high-quality tip upgrade. Backed by Thermal R&D’s Lifetime Manufacturing Warranty for lifelong integrity and shine. Easy clamp-on or weld-on installation makes it an ideal finishing touch for performance exhausts.
Key Features & Benefits
- High-Grade T304 Stainless Steel Corrosion-resistant with mirror-polished finish for premium shine
- Dual-Wall Flat Cut Design Durable, heat-resistant, and prevents soot buildup on visible surfaces
- 4″ Outlet / 3″ Inlet / 8″ Length Aggressive sizing for bold rear stance and balanced proportions
- Lifetime Manufacturing Warranty Confidence in long-term durability and quality
- USA-Made by Thermal R&D Precision formed and welded in-house for impeccable fit and finish
| Specification | Detail |
|---|---|
| Part Number | 4308 |
| Brand | Thermal R&D |
| Application | Custom / aftermarket exhaust systems (3″ inlet compatible) |
| Material | T304 Stainless Steel (polished) |
| Included | Single dual-wall flat cut exhaust tip |
| Installation | Clamp-on or weld-on to 3″ exhaust outlet |
| Warranty | Lifetime Manufacturing Warranty |
Whats Included
- One polished T304 stainless steel dual-wall exhaust tip 4″ dia outlet, 3″ inlet, 8″ long
Product Notes
- Dual-wall design protects outer surface from heat and discoloration for lasting polish
- Perfect upgrade for Thermal R&D catback systems or any custom exhaust with 3″ outlet
- Flat cut provides a clean, modern look without angled protrusion
- USA-made with in-house forming and welding for superior quality and fit
- Lifetime warranty covers manufacturing defects and material integrity
Installation Notes
- Estimated time: 10-30 minutes
- Loosen or remove existing tip/clamp
- Slide new 4308 tip over 3″ outlet pipe and secure with clamp (or weld for permanent install)
- Check alignment and tighten securely
- Professional welding recommended if permanent installation is desired
This Part Fits
| Year Range | Make | Model | Engine | Notes |
|---|---|---|---|---|
| Universal | Universal | Universal | Universal | 3″ inlet fits most aftermarket exhaust outlets; ideal for Thermal R&D systems or custom builds, measure outlet diameter for compatibility |
Why Choose Thermal R&D 4308 Exhaust Tip?
- Premium T304 polished stainless with dual-wall protection for lasting shine and durability
- Aggressive 4″ flat cut design adds modern, head-turning style to any exhaust
- Lifetime warranty ensures quality and peace of mind for custom or upgraded setups
- Thermal R&D USA-made performance brand trusted for exhaust finishes and fitment
Frequently Asked Questions
- Q: Will this fit my Thermal R&D catback system?
A: Yes, 3″ inlet designed for Thermal R&D exhaust outlets, confirm your system has 3″ tip section. - Q: Is this tip single or a set?
A: Sold individually- purchase quantity needed for single or dual-exit systems. - Q: Does it require welding?
A: No, clamp-on capable weld for permanent install if preferred.
Shipping and Handling
- Method: UPS / FedEx Ground
- Availability: In stock – ships same or next business day
- Packaging: Secure protective packaging
- Weight: Approx. 2-4 lbs (single tip)
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