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TCM ST-450 Switchable Exhaust Mufflers


TCM ST-450 Switchable Exhaust Mufflers

Teague Custom Marine ST-450 switchable exhaust mufflers give you the best of both worlds: wide open performance and sound, as well as comfortable and legal cruising noise levels. Operated by a switch at the dash, these mufflers feature a solenoid that opens and closes an internal butterfly valve to divert exhaust gasses through an outer jacket. No unsightly and bulky Y-Pipes or pneumatic pump setups required; these are the ultimate marine muffler solution. Now USCG approved and Mercury factory certified for warrantied catalyzed Mercruiser engines!



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  1. $1,408.31
    TCM ST-450 SWITCHABLE EXHAUST MUFFLER SYSTEM - 4.0" OD Hose Straight Connection SKU: TCM ST450SSFP
    Manufacturer: TEAGUE CUSTOM MARINE
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  2. $1,408.31
    TCM ST-450 SWITCHABLE EXHAUST MUFFLER SYSTEM - 4.5" OD Straight Connection SKU: TCM ST450HEADER
    Manufacturer: TEAGUE CUSTOM MARINE
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  3. $1,408.31
    TCM ST-450 SWITCHABLE EXHAUST MUFFLER SYSTEM - 4.5" OD Hose Angled Connection SKU: TCM ST450SSHPCMI
    Manufacturer: TEAGUE CUSTOM MARINE
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  4. $134.75
    Actuator ST450 SKU: SYN 1ZE6U1B1S1
    Manufacturer: TEAGUE CUSTOM MARINE
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  5. $8.97
    ST450 Reseal Kit SKU: TCM ST450SEALKIT
    Manufacturer: TEAGUE CUSTOM MARINE
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  6. $34.97
    ST450 Rebuild Kit SKU: TCM ST450REBUILD
    Manufacturer: TEAGUE CUSTOM MARINE
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  7. $22.68
    TCM EXTERNAL 4 1/2" FLAPPER (EACH / 1 piece) SKU: TCM 412SAL
    Manufacturer: TEAGUE CUSTOM MARINE
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  8. $137.44
    4 1/2" Inner Exhaust Flapper Assembly kit (1 pair) SKU: TCM ST450IFA
    Manufacturer: TEAGUE CUSTOM MARINE
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  9. $12.75
    Inner Exhaust Flapper Assembly Rebuild Kit (1 flapper) SKU: TCM ST450FLAP
    Manufacturer: TEAGUE CUSTOM MARINE
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  1. ENGINES 64 items
  2. INTERNAL ENGINE PARTS 170 items
    1. Engine Blocks 5 items
    2. Connecting Rods 10 items
      1. Manley Pro Series Connecting Rods 3 items
      2. Carrillo Pro-H Rods 6 items
      3. GM Connecting Rods 1 item
    3. Crankshafts 7 items
    4. Engine Bearings 6 items
      1. Engine Bearings 6 items
    5. Pistons / Rings / Wrist Pins 31 items
      1. Rings / Wrist Pins 22 items
      2. Pistons 9 items
    6. Harmonic Dampers / Balancers 5 items
    7. Cylinder Heads / Fastener Kits 15 items
      1. Cylinder Head Bolts 11 items
      2. Cylinder Heads 4 items
    8. Valve Train Components 84 items
      1. Roller Lifters 5 items
      2. Timing Chains / Belt Drives 9 items
      3. Rocker Arms / Girdles / Guide Plates 23 items
      4. Valve Springs/ Retainers / Keepers 10 items
      5. Billet Roller Camshafts 8 items
      6. Valves / Valve Seals 29 items
    9. Intake Manifolds 7 items
  3. ENGINE ACCESSORIES 87 items
    1. Engine Accessory Pulleys 10 items
    2. Accessory Brackets 23 items
    3. Oil Pans / Oil Pumps 23 items
      1. Oil Pumps / Drive Rods / Restrictors / Pick ups 10 items
      2. Generation 4 / World / Dart Pans 10 items
      3. Generation 5 / 6 / GM Pans 12 items
    4. Valve Covers 7 items
    5. Oil Filter Adapters / Remote Filter Mounts 8 items
    6. Timing Chain Covers / Pointers 8 items
    7. Engine Mounts 8 items
  4. ACCESSORIES 53 items
    1. Anchors / Lines 9 items
      1. Anchors 6 items
      2. Anchor Line and Hardware 3 items
    2. Bilge Pumps / Blowers 5 items
      1. Bilge Pumps 3 items
      2. Turbo In-Line Bilge Blower 2 items
    3. Cleats 10 items
    4. Trailer Hitches 11 items
    5. Bilge Drains 5 items
    6. Hatch Actuators 6 items
      1. TCM Electric Hatch Actuator 5 items
      2. Hatch Actuator Brackets 3 items
    7. Trailer Accessories 7 items
      1. Buddy Bearing 6 items
      2. Straps 1 item
  5. APPAREL / GIFTS 56 items
    1. Teague Hats 17 items
    2. Mens Apparel 19 items
    3. Ladies Apparel 24 items
      1. Ladies Bling Rhinestone Apparel 15 items
      2. Tee Shirts, Tanks and Dresses 8 items
    4. Kids Apparel 5 items
    5. Jackets / Sweatshirts 8 items
    6. Gifts & Accessories 6 items
    7. SALE Apparel 3 items
  6. BELTS 16 items
    1. Engine Accessory Belts 5 items
    2. Serpentine Blower Belts 6 items
    3. 8MM Blower Belts 5 items
  7. ELECTRICAL 22 items
    1. Circuit Breakers 4 items
    2. Marine Ignition Switches 3 items
    3. Dash Switches / Military Toggles 15 items
      1. Military Toggles Switches 3 items
      2. Toggle Switches 3 items
      3. Rocker Switches 7 items
      4. Cole Hersee Push-Pull Switches 1 item
      5. Push Button Momentary Switch 1 item
  8. ENGINE STARTING / CHARGING 32 items
    1. High Torque Starters 4 items
    2. Alternators 3 items
    3. Battery Mounts 11 items
    4. Batteries 8 items
      1. Optima Extreme Power Batteries 1 item
      2. Odyssey Extreme Batteries 5 items
      3. Interstate Deep Cycle / Cranking Batteries 2 items
    5. Battery Switches 6 items
  9. EXHAUST / MUFFLERS 185 items
    1. Exhaust Systems 55 items
      1. Manifold Exhaust Systems 24 items
      2. Header Exhaust Systems 31 items
    2. Header Accessories / Tailpipes 42 items
      1. Exhaust Tailpipe Clamp Kits 10 items
      2. Water Distribution Hoses / Clamps / Tubes 9 items
      3. Header Gaskets 8 items
      4. CMI Header Tailpipes 15 items
    3. Manifold Accessories / Risers 20 items
      1. Accessory Relocation Brackets 6 items
      2. Exhaust Manifold Risers 7 items
      3. Exhaust Manifold Gaskets 8 items
    4. Exhaust Mufflers & Tips 54 items
      1. TCM ST-450 Switchable Exhaust Mufflers 9 items
      2. Gibson Performance Mufflers / Turn Downs 9 items
      3. IMCO Gatlin Exhaust Mufflers 7 items
      4. CMI Mufflers / Sound Choice System 14 items
      5. Muffler Rebuild Kits / Parts 8 items
      6. Exhaust Tips / Tip Baffle Inserts 10 items
    5. Exhaust Accessories 18 items
      1. Transom Exhaust Tail Seals and SS Ring Kits 5 items
      2. Exhaust Flappers / SS Block Off Plates 13 items
  10. FILTERS / MOUNTS 55 items
    1. Fuel / Water Separating Filters 5 items
    2. Inline / High Pressure Fuel Filters 13 items
    3. Fuel Filter Mounts 19 items
    4. Oil Filters 9 items
    5. Oil Filter Adapters / Mounts 18 items
    6. Power Steering Filters 5 items
  11. FUEL SYSTEMS 196 items
    1. Carburetors / Rebuild Parts 77 items
      1. Carburetors 4 items
      2. Carburetor Rebuild Kits / Adapters / Spacers 73 items
    2. Fuel Pumps 15 items
      1. Mechanical Fuel Pumps 4 items
      2. Electric Fuel Pumps 11 items
    3. Fuel Pressure Regulators 15 items
    4. Fuel Manifolds 15 items
    5. Fuel Valves 5 items
    6. Fuel Filter Mounts / Filters 30 items
    7. Fuel Hose / Hard Lines 9 items
    8. Air Cleaners / Flame Arrestors / Scoops 32 items
      1. Stainless Steel Flame Arrestors 26 items
      2. Aluminum / Fiberglass Scoops 3 items
    9. Injection Systems 3 items
  12. FLYWHEELS / COUPLERS / DRIVEPLATES 13 items
  13. GASKETS / SEALS 106 items
    1. Exhaust Gaskets 19 items
    2. Carburetor 12 items
    3. Supercharger / Intercooler 12 items
    4. Stern Drive / Transmission 16 items
    5. Heat Exchanger / Oil Cooler 5 items
    6. Intake Manifold Gaskets 10 items
    7. Oil Pan Gaskets 7 items
    8. Cylinder Head Gaskets 15 items
    9. Engine Main Seals 5 items
    10. Engine Gaskets 5 items
  14. GAUGES / CONTROLS / LIGHTS 192 items
    1. Marine Gauges 90 items
      1. Livorsi Mega / Race Series Gauges 49 items
      2. Livorsi Industrial Gauges 24 items
      3. Gauge Bezels Flat / Angled 12 items
      4. Specialty Gauges / TCM Blow Out Gauges 2 items
      5. Air / Fuel Mixture Gauges 5 items
    2. Gauge Senders / Warning Systems 24 items
    3. Control / Indicator Cables 40 items
      1. Mercury Control Cables 2 items
      2. Cable Ends / Clamps 7 items
      3. Teleflex Control Cables 33 items
    4. Controls / Throttles / Shifters 18 items
      1. Standard Handle Controls 7 items
      2. Billet Bent Handle Controls 5 items
      3. Side Mount Controls 4 items
      4. Control Accessories 2 items
    5. Trim Controls 5 items
      1. Stainless Cable Grips 2 items
      2. Clamshells 2 items
      3. Cable Ends 1 item
    6. Marine Navigation Lights 6 items
      1. LED Lights 1 item
      2. Navigation Lights 5 items
  15. HARDWARE 191 items
    1. Billet Aluminum Spacers / Stringer Washers 7 items
      1. Billet Aluminum Washers 3 items
      2. Billet Aluminum Spacers 4 items
    2. SS Hardware / Fasteners 151 items
      1. 1/4" 37 items
      2. 5/16" 38 items
      3. 3/8" 42 items
      4. 7/16" 31 items
      5. 1/2" 7 items
    3. Grade 8 Hardware / Fasteners 3 items
    4. Specialty Hardware / Fasteners 30 items
  16. IGNITION SYSTEMS 54 items
    1. Ignition Components 36 items
      1. MSD Marine Distributors 3 items
      2. Ignition Coils 9 items
      3. Ignition Rev Control 2 items
      4. MSD 6M2L Ignition Box 2 items
      5. Spark Plug Wires 6 items
      6. MSD Parts / Harnesses 8 items
      7. Distributor Caps / Rotors 6 items
    2. Spark Plugs 12 items
    3. Ignition Switches / Accessories 7 items
  17. LUBRICANTS / ADHESIVES / CLEANERS 72 items
    1. Oil / Lubricants 20 items
      1. Transmission Fluid & Gear Lubricants 1 item
      2. Kendall Motor Oil 5 items
      3. Mercury High Performance Gear Lu 6 items
      4. Amsoil Motor Oil 5 items
      5. Mobil 1 Motor Oil 2 items
    2. Spray Paint 1 item
      1. Mercury Paint 1 item
    3. Adhesives 4 items
    4. Solvents 2 items
      1. Solvent 184 1 item
      2. Silicone Solvent 200 1 item
    5. Sealants 14 items
    6. LocTite 8 items
    7. Cleaning / Polishing 26 items
      1. Boat Bling Sauces 4 items
      2. Polish - Wax - Detail Products 4 items
      3. Slimy Grimy Cleaning Products 5 items
      4. Bio-Kleen Products 9 items
      5. Performance Boat Candy 4 items
  18. PLUMBING / RIGGING 500 items
    1. AN Hose Ends / Adapters 222 items
      1. Chrome Brass Adapters / Fittings 124 items
      2. Aluminum Adapters / Fittings 71 items
      3. Stainless Steel Hose Ends & Adapters 69 items
      4. Plumbing Tools 2 items
      5. SS Adapters / Fittings 42 items
    2. SS Water Pick Ups 60 items
      1. SS Transom Mount Water Pick Ups 5 items
      2. SS Cav-Plate / Bottom Mount Water Pick Ups 7 items
      3. SS Curved Water Pick Ups 12 items
      4. SS Adjustable Water Pick Ups 36 items
    3. SS Water Crossovers 21 items
    4. SS Offshore Sea Strainers 33 items
    5. SS Water Dumps / Bulkheads 41 items
      1. Single Dump 6 items
      2. Dual Dump 4 items
      3. Single Dump Flush Mount 12 items
      4. Dual Dump Flush Mount "Wide Body 4 items
      5. Dual Dump Flush Mount "Narrow Bo 9 items
      6. Triple Dump Flush Mount 2 items
      7. Quad Dump Flush Mount 1 item
      8. SS Bulkhead Fittings 3 items
    6. SS Hose Tees 7 items
    7. Hose Clamps 43 items
      1. SS Adel Clamps 11 items
      2. Steel Adel Clamps 11 items
      3. SS Hose Clamps 21 items
    8. Hoses 22 items
      1. Goodridge Stainless Steel Braided Hose 1 item
      2. Shield Marine Wet Exhaust / Water Hose 5 items
      3. Aeroquip Cloth Braided Hose 8 items
      4. Trident Marine Fuel Hose 9 items
    9. Exhaust Plumbing 3 items
    10. Thermostat Housings 27 items
      1. SS Thermostat Housings 26 items
      2. Aluminum Water Dividers 1 item
    11. Engine Plumbing Kits 2 items
    12. Engine Flushing / Ball Valves 17 items
      1. Ball Valves Polished SS 5 items
      2. Ball Valves Brass 5 items
      3. Engine Flush 7 items
    13. Pressure Relief & Check Valves 7 items
  19. PROPELLERS / HUBS / ACCESSORIES 216 items
    1. Propellers 193 items
      1. Mercury Bravo 1 16 items
      2. Mercury Racing Bravo 1 FS 26 items
      3. Mercury Racing Bravo 1 Lab Finish 30 items
      4. Mercury Racing MAX-5 49 items
      5. Mercury Racing Maximus Lab Finish 51 items
      6. Mercury Mirage Plus 7 items
      7. Mercury Revolution 4 5 items
      8. Mercury High Five 4 items
      9. Mercury Racing CNC Pro Finish Cleavers 4 items
      10. Hydromotive Propellers 1 item
    2. Hub Kits / Installation 10 items
    3. Prop Wrenches / Mounts / Covers 7 items
    4. Propeller / Stern Drive Locks 6 items
  20. SAFETY 22 items
    1. LIFELINE JACKETS 16 items
    2. BELL HELMETS 6 items
  21. STEERING 138 items
    1. External Hydraulic Assist Kits 58 items
    2. Hydraulic Steering Hose Kits 19 items
    3. Tie Bars / Steering Caps 15 items
    4. Steering Wheels 14 items
    5. Full Hydraulic Helm Kits 9 items
    6. Pumps / Tanks / Brackets 19 items
    7. Filters 5 items
    8. Hydraulic Steering Parts / Fittings / Accessories 7 items
  22. STERN DRIVES / TRANSOMS 198 items
    1. Stern Drives / Upgrades 88 items
      1. Complete Stern Drives / Uppers / Lowers 50 items
      2. Drive Components 38 items
    2. Transom Assembly / Gimbal 47 items
      1. Transom Assemblies 6 items
      2. Gimbal Helmets / Rings / Service Parts 41 items
    3. Flush Kits 7 items
    4. Drive Spacers 13 items
    5. Extension Boxes 4 items
    6. Trim Pumps / Reservoirs / Tanks 12 items
    7. Nose Cones 1 item
    8. Bravo Drive Showers 18 items
    9. Propeller Aerator Kits 9 items
    10. Mercruiser Accessories 9 items
  23. SUPERCHARGERS / INTERCOOLERS 230 items
    1. Marine Superchargers 102 items
      1. Whipple Superchargers 82 items
      2. Roots Style Blowers 18 items
      3. Blower Hardware 3 items
    2. Intercoolers 57 items
      1. Whipple Marine Intercoolers 8 items
      2. Superchillers 10 items
      3. Intercooler Parts / Accessories 39 items
    3. Blower Drive Belts 15 items
      1. Serpentine Blower Belts 10 items
      2. 8mm Blower Belts 5 items
    4. Supercharger Pulleys 41 items
      1. 8mm Gilmer Pulleys 30 items
      2. 16 Rib B&M Style Pulleys 11 items
    5. Throttle Linkage Kits 15 items
    6. Mercury Racing ECU Upgrades 11 items
  24. TOOLS 14 items
  25. TRANSMISSION / ACCESSORIES 20 items
    1. Bellhousings / Coolers / Accessories 12 items
    2. Hydraulic Transmissions 7 items
  26. TRIM TABS 26 items
    1. Livorsi Trim Tabs 15 items
    2. Trim Tab Inside Hoses 8 items
    3. Mercury K-Plane Trim Tabs 4 items
  27. V-DRIVE 33 items
    1. Prop Puller 1 item
    2. Split Couplers 4 items
    3. Stuffing Boxs 16 items
    4. Marine Propshaft Bearings 12 items
      1. Aqua-Lube Propshaft Bearings 3 items
      2. BJ Marine Propshaft Bearings. 9 items
  28. WATER PUMPS / OIL COOLERS 57 items
    1. Water Pumps / Parts 29 items
      1. Sea Pump Rebuild Kits 11 items
      2. Back Plates / Brackets / Pulleys 6 items
      3. Sea Water Pumps 13 items
    2. Oil Coolers / Parts 28 items
      1. Oil Coolers 18 items
      2. SS Oil Cooler Brackets 6 items
      3. Oil Cooler Gaskets 5 items
  29. NEW / USED SPECIALS 17 items
    1. Engines & Parts 7 items
    2. Fuel Injection Kits 5 items
    3. Fuel System Parts / Accessories 4 items
    4. MSD Ignitions Systems 1 item
    5. Intercoolers 1 item
    6. Gauges / Controls (Specials) 1 item
    7. Cleaning Supplies 1 item
  30. HOT ITEMS 17 items
Price
  1. $0.00 - $999.99 6 items
  2. $1,000.00 and above 3 items
Manufacturer
  1. TEAGUE CUSTOM MARINE 9 items
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