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Quiet Muffler
Unit above shown without resonator.

Model 3S Super Trapp Quiet Muffler

The Model 3S adapts to a wide range of engines 2 to 50 HP. Recommended for engines up to 10 HP where minimum exhaust noise is required and for larger engines where space is limited (You must use the optional resonators if noise reduction is required). Use 1 disc per 3 HP. Discs are sold in package of 3. USDA Forest Approved spark arrestor No. T-100. Where minimum noise is CRITICAL, use Model 5s + Resonator.

Follow directions below to Order

  • First decide if you will need Clamp-On or Threaded adapter for your particular engine.
  • Then go to the section below for either Threaded or Clamp-On.
  • After you have decided which adapter will fit your engine, you will need to order the correct number of Diffuser Discs. Use 1 disc per 3 HP. These discs control the back pressure on your engine.
  • Order the 3 0r 12 pack of discs below.
  • Next, order the optional resonator. The Resonator is required for noise reduction.
  • Also, remember if noise reduction is critical and you have unlimited space go to the 5S Super Trapp muffler.
Sold as components only. Order discs as required. A Model 3S comes as Base, Cap and Center Bolt. If you are installing on a 6 HP engine order 1 Model 3S and 1 3-Packs of diffuser discs. This will give you a total of 3 discs (use 1 per 3 HP, on a 6HP use 2 discs).
ADAPTER THREADED
COMPLETE UNITS SIZE ORDER
Includes: Base, Cap and
Center Bolt

National Pipe Thread Male:

Measure diameter of hole.
If hole is 1" than you need 3/4" NPT.
If hole measures 1 1/4" than you need 1" NPT.

1/2" NPT
Part# 3S0500T

Our Price: $69.95
Qty:
3/4" NPT
Part# 3S0750T

Our Price: $49.95
Qty:
1" NPT
Part# 3S1000T

Our Price: $49.95
Qty:
1 1/4" NPT
Part# 3S1250T

Our Price: $49.95
Qty:
1 1/2" NPT
Part# 3S1500T

Our Price: $49.95
Qty:
ADAPTER CLAMP-ON (fits over pipe O.D.)
COMPLETE UNITS SIZE ORDER
Includes: Base, Cap and
Center Bolt

Hose Type Clamp-On

1.00"
Part# 3S1000H

Our Price: $49.95
Qty:
1.050"
Part# 3S1050H

Our Price: $49.95
Qty:
1.25"
Part# 3S1250H

Our Price: $49.95
Qty:
1.312"
Part# 3S1312H

Our Price: $49.95
Qty:
1.50"
Part# 3S1500H

Our Price: $49.95
Qty:
1.75"
Part# 3S1750H

Our Price: $49.95
Qty:
2.00"
Part# 3S2000H

Our Price: $59.95
Qty:
DIFFUSER DISCS (1 PER 3 HP)
Diffuser Discs 3-Pack
Part# 3S6503

Our Price: $12.95
Qty:
12-Pack
Part# 3S6512

Our Price: $29.95
Qty:
RESONATOR (REQUIRED FOR NOISE REDUCTION)
Resonator Resonator
Part# 3S5500

Our Price: $59.95
Qty: