Flowmaster 42441 40 Series Muffler
2.25 Offset In and 2.25 Center Out - Aggressive Sound
Price as of 2026-06-20. Check Amazon for the current price.
Quick Decision
Is This Right For You?
- •Flowmaster loyalists — the brand spans 23 products in our database
- •Cherry Bomb 87529CB 87529 Glasspack Muffler offers a better rating (4.6/5) at a similar or lower price ($37)
- •Cherry Bomb 87529CB 87529 Glasspack Muffler — 59% cheaper at $37 (Score A)
- •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 Flowmaster 42441 40 Series Muffler | Most Popular Thrush Muffler Deep Performance Tone Inlet 2.5 Pipe | Best Rated MagnaFlow Exhaust Products MagnaFlow Performance Exhaust Muffler 10414: 2"/2" | Best Value Cherry Bomb 87529CB 87529 Glasspack Muffler | |
|---|---|---|---|---|
| Price | $89.96 | $49.99 | $105.99 | $37.30 |
| Rating | 4.5/5 | 4.5/5 | 4.7/5 | 4.6/5 |
| Reviews | 588 | 1,780 | 1,081 | 564 |
| Mubboo Score | B+ | A | B+ | A |
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 Flowmaster
- 23 products in our database
- Average rating: 4.6/5 across all products
- Price range: $89.96 – $269.95
- Categories: exhaust-systems-and-parts
Other exhaust systems and parts
Bottom Line
Flowmaster 42441 40 Series Muffler earns Mubboo Score B+. Priced at $90 — a mid-range option, above the category average of $79. Rated 4.5/5 from 588+ reviews. Strong buy if: flowmaster loyalists. Skip if: cherry bomb 87529cb 87529 glasspack muffler offers a better rating (4.6/5) at a similar or — Thrush Muffler Deep Performance Tone Inlet 2.5 Pipe (Score A, $50) may fit better.
Frequently Asked Questions
Is the Flowmaster 42441 40 Series Muffler worth buying in 2026?
It earns a Mubboo Score of B+, with a 4.5/5 rating from 588 reviews — better than 47% of exhaust systems and parts we track.
How much does the Flowmaster 42441 40 Series Muffler cost?
It is currently $89.96 — mid-tier pricing for exhaust systems and parts.
How does the 42441 40 Series Muffler compare to other exhaust systems and parts?
The category's most-reviewed alternative is the Thrush Muffler Deep Performance Tone Inlet 2.5 Pipe (4.5/5, 1,780 reviews, $49.99). The 42441 40 Series Muffler carries a Mubboo Score of B+ vs A.
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.