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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. $12.75
    Inner Exhaust Flapper Assembly Rebuild Kit (1 flapper) SKU: TCM ST450FLAP
    Manufacturer: TEAGUE CUSTOM MARINE
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  3. $137.44
    4 1/2" Inner Exhaust Flapper Assembly kit (1 pair) SKU: TCM ST450IFA
    Manufacturer: TEAGUE CUSTOM MARINE
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  4. $22.68
    TCM EXTERNAL 4 1/2" FLAPPER (EACH / 1 piece) SKU: TCM 412SAL
    Manufacturer: TEAGUE CUSTOM MARINE
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  5. $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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  6. $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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  7. $8.97
    ST450 Reseal Kit SKU: TCM ST450SEALKIT
    Manufacturer: TEAGUE CUSTOM MARINE
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  8. $34.97
    ST450 Rebuild Kit SKU: TCM ST450REBUILD
    Manufacturer: TEAGUE CUSTOM MARINE
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  9. $115.50
    Actuator ST450 SKU: SYN 1ZE6U1B1S1
    Manufacturer: TEAGUE CUSTOM MARINE
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  1. ENGINES 65 items
  2. INTERNAL ENGINE PARTS 173 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 6 items
    7. Cylinder Heads / Fastener Kits 15 items
      1. Cylinder Head Bolts 11 items
      2. Cylinder Heads 4 items
    8. Valve Train Components 88 items
      1. Roller Lifters 3 items
      2. Timing Chains / Belt Drives 8 items
      3. Rocker Arms / Girdles / Guide Plates 24 items
      4. Valve Springs/ Retainers / Keepers 14 items
      5. Billet Roller Camshafts 10 items
      6. Valves / Valve Seals 29 items
    9. Intake Manifolds 5 items
  3. ENGINE ACCESSORIES 80 items
    1. Engine Accessory Pulleys 10 items
    2. Accessory Brackets 22 items
    3. Oil Pans / Oil Pumps 18 items
      1. Oil Pumps / Drive Rods / Restrictors / Pick ups 4 items
      2. Generation 4 / World / Dart Pans 8 items
      3. Generation 5 / 6 / GM Pans 8 items
    4. Valve Covers 7 items
    5. Oil Filter Adapters / Remote Filter Mounts 7 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 55 items
    1. Teague Hats 16 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 5 items
    7. SALE Apparel 3 items
  6. ELECTRICAL 33 items
    1. Circuit Breakers 1 item
      1. Watertight Circuit Breakers/Swit 1 item
    2. Fuse Blocks / Terminal Strips 14 items
      1. Cole Hersee Terminal Blocks 7 items
      2. Blocks for ATC or ATO Fuses or P 4 items
      3. COH Fuse Blocks 3 items
    3. Marine Ignition Switches 3 items
    4. 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
  7. ENGINE STARTING / CHARGING 30 items
    1. High Torque Starters 4 items
    2. Alternators 4 items
    3. Battery Mounts 6 items
    4. Batteries 10 items
      1. Optima Extreme Power Batteries 3 items
      2. Odyssey Extreme Batteries 5 items
      3. Interstate Deep Cycle / Cranking Batteries 2 items
    5. Battery Switches 6 items
  8. EXHAUST / MUFFLERS 185 items
    1. Exhaust Systems 59 items
      1. Manifold Exhaust Systems 26 items
      2. Header Exhaust Systems 33 items
    2. Header Accessories / Tailpipes 38 items
      1. Exhaust Tailpipe Clamp Kits 10 items
      2. Water Distribution Hoses / Clamps / Tubes 8 items
      3. Header Gaskets 8 items
      4. CMI Header Tailpipes 12 items
    3. Manifold Accessories / Risers 22 items
      1. Accessory Relocation Brackets 8 items
      2. Exhaust Manifold Risers 9 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 8 items
      4. CMI Mufflers / Sound Choice System 14 items
      5. Muffler Rebuild Kits / Parts 8 items
      6. Exhaust Tips / Tip Baffle Inserts 9 items
    5. Exhaust Accessories 16 items
      1. Transom Exhaust Tail Seals and SS Ring Kits 5 items
      2. Exhaust Flappers / SS Block Off Plates 11 items
  9. FILTERS / MOUNTS 50 items
    1. Fuel / Water Separating Filters 6 items
    2. Inline / High Pressure Fuel Filters 13 items
    3. Fuel Filter Mounts 14 items
    4. Oil Filters 8 items
    5. Oil Filter Adapters / Mounts 14 items
    6. Power Steering Filters 5 items
  10. FUEL SYSTEMS 206 items
    1. Carburetors / Rebuild Parts 78 items
      1. Carburetors 4 items
      2. Carburetor Rebuild Kits / Adapters / Spacers 74 items
    2. Fuel Pumps 15 items
      1. Mechanical Fuel Pumps 4 items
      2. Electric Fuel Pumps 11 items
    3. Fuel Pressure Regulators 14 items
    4. Fuel Manifolds 14 items
    5. Fuel Valves 5 items
    6. Fuel Filter Mounts / Filters 26 items
    7. Fuel Hose / Hard Lines 10 items
    8. Air Cleaners / Flame Arrestors / Scoops 46 items
      1. Stainless Steel Flame Arrestors 27 items
      2. Aluminum / Fiberglass Scoops 3 items
    9. Injection Systems 2 items
  11. FLYWHEELS / COUPLERS / DRIVEPLATES 15 items
  12. GASKETS / SEALS 99 items
    1. Exhaust Gaskets 19 items
    2. Carburetor 12 items
    3. Supercharger / Intercooler 12 items
    4. Stern Drive / Transmission 15 items
    5. Heat Exchanger / Oil Cooler 5 items
    6. Intake Manifold Gaskets 8 items
    7. Oil Pan Gaskets 3 items
    8. Cylinder Head Gaskets 15 items
    9. Engine Main Seals 5 items
    10. Engine Gaskets 5 items
  13. GAUGES / CONTROLS / LIGHTS 185 items
    1. Marine Gauges 91 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 13 items
    3. Control / Indicator Cables 42 items
      1. Mercury Control Cables 2 items
      2. Cable Ends / Clamps 9 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 6 items
      1. Stainless Cable Grips 3 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
  14. HARDWARE 97 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 57 items
      1. 1/4" 20 items
      2. 5/16" 17 items
      3. 3/8" 20 items
      4. 7/16" 5 items
      5. 1/2" 1 item
    3. Grade 8 Hardware / Fasteners 3 items
    4. Specialty Hardware / Fasteners 30 items
  15. IGNITION SYSTEMS 50 items
    1. Ignition Components 33 items
      1. MSD Marine Distributors 2 items
      2. Ignition Coils 9 items
      3. Ignition Rev Control 2 items
      4. MSD 6M2L Ignition Box 2 items
      5. Spark Plug Wires 7 items
      6. MSD Parts / Harnesses 4 items
      7. Distributor Caps / Rotors 7 items
    2. Spark Plugs 11 items
    3. Ignition Switches / Accessories 6 items
  16. SUPERCHARGERS / INTERCOOLERS 226 items
    1. Marine Superchargers 101 items
      1. Whipple Superchargers 82 items
      2. Roots Style Blowers 17 items
      3. Blower Hardware 3 items
    2. Intercoolers 55 items
      1. Whipple Marine Intercoolers 6 items
      2. Superchillers 11 items
      3. Intercooler Parts / Accessories 38 items
    3. Blower Drive Belts 13 items
      1. Serpentine Blower Belts 9 items
      2. 8mm Blower Belts 4 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
  17. STEERING 141 items
    1. External Hydraulic Assist Kits 60 items
    2. Hydraulic Steering Hose Kits 20 items
    3. Tie Bars / Steering Caps 18 items
    4. Steering Wheels 14 items
    5. Full Hydraulic Helm Kits 9 items
    6. Pumps / Tanks / Brackets 16 items
    7. Filters 5 items
    8. Hydraulic Steering Parts / Fittings / Accessories 6 items
  18. PROPELLERS / HUBS / ACCESSORIES 205 items
    1. Propellers 183 items
      1. Mercury Bravo 1 16 items
      2. Mercury Racing Bravo 1 FS 26 items
      3. Mercury Racing Bravo 1 Lab Finish 29 items
      4. Mercury Racing MAX-5 24 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 17 items
    2. Hub Kits / Installation 10 items
    3. Prop Wrenches / Mounts / Covers 6 items
    4. Propeller / Stern Drive Locks 6 items
  19. STERN DRIVES / TRANSOMS 192 items
    1. Stern Drives / Upgrades 86 items
      1. Complete Stern Drives / Uppers / Lowers 50 items
      2. Drive Components 36 items
    2. Transom Assembly / Gimbal 40 items
      1. Transom Assemblies 6 items
      2. Gimbal Helmets / Rings / Service Parts 34 items
    3. Flush Kits 7 items
    4. Drive Spacers 13 items
    5. Extension Boxes 8 items
    6. Trim Pumps / Reservoirs / Tanks 10 items
    7. Nose Cones 1 item
    8. Bravo Drive Showers 18 items
    9. Propeller Aerator Kits 9 items
    10. Mercruiser Accessories 6 items
  20. TRANSMISSION / ACCESSORIES 13 items
    1. Bellhousings / Coolers / Accessories 9 items
    2. Hydraulic Transmissions 4 items
  21. BELTS 14 items
    1. Serpentine Blower Belts 6 items
    2. 8MM Blower Belts 4 items
    3. Engine Accessory Belts 4 items
  22. WATER PUMPS / OIL COOLERS 54 items
    1. Water Pumps / Parts 27 items
      1. Sea Pump Rebuild Kits 11 items
      2. Back Plates / Brackets / Pulleys 6 items
      3. Sea Water Pumps 11 items
    2. Oil Coolers / Parts 27 items
      1. Oil Coolers 17 items
      2. SS Oil Cooler Brackets 6 items
      3. Oil Cooler Gaskets 5 items
  23. PLUMBING / RIGGING 561 items
    1. SS Water Crossovers 19 items
    2. SS Offshore Sea Strainers 33 items
    3. 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
    4. SS Hose Tees 7 items
    5. Hose Clamps 43 items
      1. SS Adel Clamps 11 items
      2. Steel Adel Clamps 11 items
      3. SS Hose Clamps 21 items
    6. Hoses 27 items
      1. Goodridge Stainless Steel Braided Hose 6 items
      2. Shield Marine Wet Exhaust / Water Hose 5 items
      3. Aeroquip Cloth Braided Hose 8 items
      4. Trident Marine Fuel Hose 9 items
    7. Exhaust Plumbing 3 items
    8. SS Water Pick Ups 56 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 32 items
    9. Thermostat Housings 30 items
      1. SS Thermostat Housings 29 items
      2. Aluminum Water Dividers 1 item
    10. Engine Plumbing Kits 2 items
    11. Engine Flushing / Ball Valves 12 items
      1. Ball Valves Polished SS 5 items
      2. Engine Flush 7 items
    12. Pressure Relief & Check Valves 7 items
    13. AN Hose Ends / Adapters 286 items
      1. Chrome Brass Adapters / Fittings 119 items
      2. Aluminum Adapters / Fittings 140 items
      3. Stainless Steel Hose Ends & Adapters 69 items
      4. Plumbing Tools 2 items
      5. SS Adapters / Fittings 41 items
  24. TOOLS 14 items
  25. 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
  26. SAFETY 21 items
    1. LIFELINE JACKETS 15 items
  27. LUBRICANTS / ADHESIVES / CLEANERS 72 items
    1. Oil / Lubricants 21 items
      1. Transmission Fluid & Gear Lubricants 1 item
      2. Kendall Motor Oil 5 items
      3. Mercury High Performance Gear Lu 5 items
      4. Amsoil Motor Oil 7 items
      5. Mobil 1 Motor Oil 2 items
    2. Spray Paint 2 items
      1. Mercury Paint 2 items
    3. Adhesives 4 items
    4. Solvents 2 items
      1. Solvent 184 1 item
      2. Silicone Solvent 200 1 item
    5. Sealants 12 items
    6. LocTite 6 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
  28. NEW / USED SPECIALS 17 items
    1. Engines & Parts 5 items
    2. Exhuast Systems & Parts 1 item
    3. Fuel Injection Kits 3 items
    4. Fuel System Parts / Accessories 2 items
    5. MSD Ignitions Systems 3 items
    6. Intercoolers 1 item
    7. Gauges / Controls (Specials) 1 item
  29. HOT ITEMS 17 items
  30. 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
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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