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Slip-In Marine Exhaust Silencers
| Silencer Test: With noise legislation becoming a very
real issue, noise regulations are increasingly affecting boaters in many
parts of the United States. Here are some popular tests of
silencers from leading manufacturers. The results are
comprehensive. The Slip-In silencers are a top performer in noise
reduction and a great value for most applications. Here are the
results: Test Boat - 25 foot Eliminator Daytona
Engine - 502-ci Chevrolet/Bravo
Exhaust System - Gil Exhaust Manifolds, pipes & through transom
exhaust tips.
| Silencer Type |
dBA
@idle |
dBA@
3000RPM |
dBA
@WOT |
RPM
@WOT |
| Open Exhaust |
84 |
97 |
103 |
4700 |
| Hardin Marine Slip-In Silencer (410-284401) |
74 |
84 |
92 |
4500 |
Hardin Marine Silencer Tips (410-282405)
Open Position
Closed Position |
82
75 |
87
85 |
100
95 |
4700
4650 |
Gaffrig Power Tip (725-1302)
Open Position
Closed Position |
84
75 |
96
87 |
102
94 |
4700
NA |
| Hardin Marine HP (410-282409) |
76 |
87 |
95 |
4650 |
| Bassett Header Mufflers (410-284402) |
78 |
92 |
98 |
4600 |
| Drew Shotgun III's (400-SG4) |
82 |
92 |
99 |
4700 |
|
Click on the part number to
check pricing or place an order.
Exhaust Silencer
Hardin Marine Slip-In Silencers |
|
These silencers are one of the best values on the
market today. Their unique louvered design out flows all
other imitations with holes. These silencers are constructed
from 100% stainless steel and their compact 5" length
makes them easy to install in most exhaust tips and water
injected headers. Decibel drops of 8 to 10 are commonly seen.
Best suited for under 425 horsepower applications.
|
Part
No. |
Description |
|
410-284401 |
4" Slip-in Silencers (pair) |
|
Exhaust Silencer
High Performance Silencers |
|
These high performance silencers feature large
stainless packed louvered design cores for maximum
performance through a muffler system. They are ideal for blown or
high compression engines. They are approximately 10" long
and slip in a 4" header collector. Best suited for higher
horsepower applications.
|
Part
No. |
Description |
|
410-284402 |
4" Hi-performance Header Silencers (pair) |
|
|