MagnaFlow Exhaust Products MagnaFlow Performance Exhaust Muffler 11386: 4" x
9" Body, 14" Length | Dual 2.5" ID Inlet and Outlet Connections | Stainless Steel with Satin finish
Price as of 2026-06-20. Check Amazon for the current price.
Quick Decision
Is This Right For You?
- •Buyers who prioritize quality over price in exhaust systems and parts
- •You're on a tight budget — $73 above the category average of $79
- •MagnaFlow Exhaust Products MagnaFlow Performance Exhaust Muffler 10414: 2"/2" offers a better rating (4.7/5) at a similar or lower price ($106)
- •Flowmaster 42543 Chambered Muffler 40 Series 2.50 Offset In — 41% cheaper at $90 (Score B+)
- •MagnaFlow Exhaust Products MagnaFlow Performance Exhaust Muffler 10414: 2"/2" — higher rated at 4.7/5 ($106)
📊 Based on data analysis of 193 products in this category.
Mubboo Score: B
How we calculate the Mubboo Score
Quality (45%): customer rating, normalized to a 10-point scale
Popularity (35%): review volume vs the category leader, log-scaled
Value (20%): price position vs other exhaust systems and parts
Computed from live Amazon rating, review count, and price across 193 exhaust systems and parts · last refreshed 2026-06-20.
How It Compares
This Product MagnaFlow Exhaust Products MagnaFlow Performance Exhaust Muffler 11386: 4" x | Most Popular MagnaFlow Exhaust Products MagnaFlow Performance Exhaust Muffler 10414: 2"/2" | Best Rated Vibrant Performance 1141 2.5' Ultra Quiet Resonator | Best Value Flowmaster 42543 Chambered Muffler 40 Series 2.50 Offset In | |
|---|---|---|---|---|
| Price | $152 | $105.99 | $125.78 | $89.96 |
| Rating | 4.6/5 | 4.7/5 | 4.7/5 | 4.7/5 |
| Reviews | 490 | 1,081 | 1,021 | 531 |
| Mubboo Score | B | B+ | B+ | B+ |
What People Say
Synthesized from 40 reviews · 100% verified purchases.
Choose mufflers matching your engine size and volume preference; Thrush and MagnaFlow offer deep drone-free tones for most engines, while Cherry Bombs are very loud and may degrade to a straight pipe over time. For heat wraps, proper surface preparation and extra adhesive prevent peeling.
- Affordable price and great value
- Easy installation
- Deep, aggressive sound without excessive drone
- Effective heat reflection and protection
- Sound may be weak or raspy on certain engines
- Minor manufacturing and quality inconsistencies
- Adhesive weakness or peeling on heat tape
Related Video Reviews
- 📹 🔊Top 7 Exhausts for 5.0 F150 (‘15–‘20) | Best Deals 2026 — MyOffroadGear
About MagnaFlow Exhaust Products
- 18 products in our database
- Average rating: 4.6/5 across all products
- Price range: $105.99 – $358
- Categories: exhaust-systems-and-parts
Other exhaust systems and parts
Bottom Line
MagnaFlow Exhaust Products MagnaFlow Performance Exhaust Muffler 11386: 4" x earns Mubboo Score B. Priced at $152 — a premium option, above the category average of $79. Rated 4.6/5 from 490+ reviews. Strong buy if: buyers who prioritize quality over price in exhaust systems and parts. Skip if: you're on a tight budget — MagnaFlow Exhaust Products MagnaFlow Performance Exhaust Muffler 10414: 2"/2" (Score B+, $106) may fit better.
Frequently Asked Questions
Is the MagnaFlow Exhaust Products MagnaFlow Performance Exhaust Muffler 11386: 4" x worth buying in 2026?
It earns a Mubboo Score of B, with a 4.6/5 rating from 490 reviews — better than 74% of exhaust systems and parts we track.
How much does the MagnaFlow Exhaust Products MagnaFlow Performance Exhaust Muffler 11386: 4" x cost?
It is currently $152 — premium-tier pricing for exhaust systems and parts.
How does the MagnaFlow Performance Exhaust Muffler 11386: 4" x compare to other exhaust systems and parts?
The category's most-reviewed alternative is the MagnaFlow Exhaust Products MagnaFlow Performance Exhaust Muffler 10414: 2"/2" (4.7/5, 1,081 reviews, $105.99). The MagnaFlow Performance Exhaust Muffler 11386: 4" x carries a Mubboo Score of B vs B+.
Sources & References
Mubboo may earn a commission on purchases made through affiliate links. This does not affect our Mubboo Score, product rankings, or editorial judgments. Prices are accurate as of the last sync (2026-06-20) and may change.