Big Twin Air Intake & Fuel System

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      The TC Bros. Air Cleaner for Harley-Davidson Bendix, Zenith, and Keihin Butterfly Carburetors features red pleated fabric and a ribbed silver metal cap. This round cleaner by TC Bros. is shown against a white background.
      The TC Bros. Air Cleaner for Harley-Davidson Bendix, Zenith, and Keihin Butterfly Carburetors features red pleated fabric and a ribbed silver metal cap. This round cleaner by TC Bros. is shown against a white background.
      TC Bros.
      TC Bros. Air Cleaner for Harley-Davidson Bendix, Zenith, and Keihin Butterfly Carburetors
      $62.95 from $52.95 Save $10.00
      Sale
      The TC Bros. Chrome Louvered Air Cleaner Kit for Harley-Davidson CV and EFI includes a chrome louvered cover, red filter element, black mounting plate, screws, and wing nut.
      The TC Bros. Chrome Louvered Air Cleaner Kit for Harley-Davidson CV and EFI includes a chrome louvered cover, red filter element, black mounting plate, screws, and wing nut.
      TC Bros.
      TC Bros. Chrome Louvered Air Cleaner Kit for Harley-Davidson CV and EFI
      $62.95 $52.95 Save $10.00
      170 reviews
      TC Bros. offers TC Bros. e-gift cards for motorcycle enthusiasts.
      TC Bros.
      TC BROS. GIFT CARD
      from $10.00
      Sale
      Harley-Davidson aftermarket carburetor filter kit with TC Bros Breather Bolts For 1991-2022 Sportster & EVO Big Twin for improved crankcase venting.
      A close up of a motorcycle with TC Bros Breather Bolts For 1991-2022 Sportster & EVO Big Twin aftermarket air cleaner and a red engine.
      TC Bros.
      TC Bros Breather Bolts For 1991-2022 Sportster & EVO Big Twin
      $44.95 $39.95 Save $5.00
      67 reviews
      Sale
      A TC Bros. Chrome Louvered Air Cleaner for S&S Super E & G Carbs with a chrome cover, a cylindrical red air filter, a black mounting bracket, three bolts, a screw, and a three-spoke wing nut are displayed, perfect for V-Twin engines.
      A TC Bros. Chrome Louvered Air Cleaner for S&S Super E & G Carbs with a chrome cover, a cylindrical red air filter, a black mounting bracket, three bolts, a screw, and a three-spoke wing nut are displayed, perfect for V-Twin engines.
      TC Bros.
      TC Bros. Chrome Louvered Air Cleaner for S&S Super E & G Carbs
      $62.95 $52.95 Save $10.00
      47 reviews
      Sale
      A durable TC Bros. Reserve Fuel Bottle with the word texas on it.
      A durable TC Bros. Reserve Fuel Bottle on a white background.
      TC Bros.
      TC Bros. Reserve Fuel Bottle
      $19.95 $16.95 Save $3.00
      17 reviews
      The Vance & Hines FP4 Fuelpak Tuner for 2011-2022 Harley is a game-changer for Harley-Davidson models, providing live sensor data for optimal performance.
      The Vance & Hines FP4 Fuelpak Tuner for 2011-2022 Harley is a game-changer for Harley-Davidson models, providing live sensor data for optimal performance.
      Vance & Hines
      Vance & Hines FP4 Fuelpak Tuner for 2011-2022 Harley
      $505.95
      Sale
      An Arlen Ness Big Suckerâ„¢ Stage 1 Air Filter Kit - '01-'17 Twin Cam EFI & '99-'06 CV Carb - Black on a white background.
      The Big Suckerâ„¢ Stage 1 Air Filter Kit - '01-'17 Twin Cam EFI & '99-'06 CV Carb - Black by Arlen Ness is the perfect upgrade for your Harley-Davidson motorcycle.
      Arlen Ness
      Big Suckerâ„¢ Stage 1 Air Filter Kit - '01-'17 Twin Cam EFI & '99-'06 CV Carb - Black
      $219.95 $197.96 Save $21.99
      Sale
      The TC Bros. Black Louvered Air Cleaner for Bendix Zenith & Keihin Butterfly Carbs includes a filter, cover, mounting plate, and fasteners, all set against a white background.
      The TC Bros. Black Louvered Air Cleaner for Bendix Zenith & Keihin Butterfly Carbs includes a filter, cover, mounting plate, and fasteners, all set against a white background.
      TC Bros.
      TC Bros. Black Louvered Air Cleaner for HD CV Carbs & EFI
      $62.95 $52.95 Save $10.00
      Motorcycle fuel management system with two connected oxygen sensors and integrated ThunderMax ECM with Integral Auto Tune System for Harley M8 Softail 21-24.
      Motorcycle fuel management system with two connected oxygen sensors and integrated ThunderMax ECM with Integral Auto Tune System for Harley M8 Softail 21-24.
      ThunderMax
      ThunderMax ECM With Integral Auto Tune System For Harley M8 Softail 21-24
      $1,170.95
      A set of Universal Frisco Gas Tank Mounting Kit by TC Bros bolts and washers for a motorcycle, including Stainless steel button head bolts.
      A close up of a motorcycle engine with Universal Frisco Gas Tank Mounting Kit by TC Bros mild steel tophat bungs.
      TC Bros.
      Universal Frisco Gas Tank Mounting Kit by TC Bros
      $28.95
      41 reviews
      A ThunderMax ECM with Autotune closed-loop system for Harley 2001-2010, a black box with two wires attached to it.
      A set of ThunderMax ECM With Autotune Closed Loop System For Harley 2001-2010 wires and cables for a car.
      ThunderMax
      ThunderMax ECM With Autotune Closed Loop System For Harley 2001-2010
      $1,088.95
      A black box with two wires attached to it, featuring the ThunderMax ECM With Integral Auto Tune System For Harley 2004-2013 from the brand ThunderMax.
      A set of ThunderMax ECM With Integral Auto Tune System For Harley 2004-2013 wires and cables for an Auto Tune System-equipped car.
      ThunderMax
      ThunderMax ECM With Integral Auto Tune System For Harley 2004-2013
      $1,088.95
      A set of Moto Iron® Sportster Gas Tank Rubber Mounting Kits on a white background for custom applications.
      A set of Moto Iron® Sportster Gas Tank Rubber Mounting Kits on a white background for custom applications.
      Moto Iron®
      Sportster Gas Tank Rubber Mounting Kit
      $28.95
      24 reviews
      A TC Bros. Choke Relocation Kit with bolts and screws for the highest quality Harley Davidson Keihin CV Carburetors.
      A close up of the TC Bros. Choke Relocation Kit for Harley Davidson CV Carburetors, the highest quality air filter on a motorcycle.
      TC Bros.
      TC Bros. Choke Relocation Kit for Harley Davidson CV Carburetors
      $19.95
      37 reviews
      Sold Out
      A chrome air filter, the Arlen Ness Big Suckerâ„¢ Stage 1 Air Filter Kit - '01-'17 Twin Cam EFI & '99-'06 CV Carb - Chrome, on a white background.
      An Arlen Ness Big Suckerâ„¢ Stage 1 Air Filter Kit - '01-'17 Twin Cam EFI & '99-'06 CV Carb - Chrome for a motorcycle.
      Arlen Ness
      Big Suckerâ„¢ Stage 1 Air Filter Kit - '01-'17 Twin Cam EFI & '99-'06 CV Carb - Chrome
      $219.95 $197.96 Save $21.99
      The Kreem Gas Tank Sealer Kit is a kit designed to prevent internal rust and seal fuel tanks.
      Kreem
      Kreem Gas Tank Sealer Kit
      $54.95
      10 reviews
      Sale
      A set of TC Bros breather bolts for all Harley Twin Cam Engines, including crankcase venting.
      TC Bros Breather Bolts For all Harley Twin Cam Engines by TC Bros. aftermarket air cleaners.
      TC Bros.
      TC Bros Breather Bolts For all Harley Twin Cam Engines
      $44.95 $39.95 Save $5.00
      21 reviews
      The Vance & Hines FP4 Fuelpak Tuner M8 Touring/Trike/Softail incl. CVO '21-'23 is designed specifically for Harley-Davidson motorcycles.
      The Vance & Hines FP4 Fuelpak Tuner M8 Touring/Trike/Softail incl. CVO '21-'23 is designed specifically for Harley-Davidson motorcycles.
      Vance & Hines
      Vance & Hines FP4 Fuelpak Tuner M8 Touring/Trike/Softail incl. CVO '21-'23
      $459.99
      2 reviews
      Sale
      Two TC Bros breather bolts and washers on a white background.
      A pair of TC Bros Breather Bolts For 1991-2022 Sportster & EVO Big Twin - Black on a white background.
      TC Bros.
      TC Bros Breather Bolts For 1991-2022 Sportster & EVO Big Twin - Black
      $49.95 $44.95 Save $5.00
      A device with a yellow cable attached to it, designed for optimal performance and fuel tuning, known as the Dynojet Power Vision.
      A set of Dynojet Power Vision 3 06-13 Touring, 06-10 Softail, 06-11 Dyna & 07-13 Sportster J1850 ECM cables and a remote control for a car, serving as fuel tuner to optimize the car's performance with Dynojet.
      Dynojet
      Dynojet Power Vision 3 06-13 Touring, 06-10 Softail, 06-11 Dyna & 07-13 Sportster J1850 ECM
      $499.99
      A Prism Supply Bristol Breather - CV Tumbled metal filter cover on a white background.
      A Prism Supply Bristol Breather - CV Tumbled metal filter cover on a white background.
      Prism Supply
      Prism Supply Bristol Breather - CV Tumbled
      $55.00
      A Prism Supply Petcock - 90° 1/4" NPT - Brass fitting on a white background.
      A Prism Supply Petcock - 90° 1/4
      Prism Supply
      Prism Supply Petcock - 90° 1/4" NPT - Brass
      $109.99
      The Moto Iron® Keihin CV Carb Rebuild Kit includes assorted gaskets, seals, spring, filter, and O-rings. Fits Sportster 88-06 and Big Twin 90-06 models. All components shown on a white background.
      Moto Iron®
      Keihin CV Carb Rebuild Kit Fits Sportster 88-06, Big Twin 90-06
      $24.95
      7 reviews
      A Moto Iron® Cam Lock Gas Cap on a white background.
      A close up of a motorcycle with a red and black paint job featuring the Moto Iron® Cam Lock Gas Cap, a chrome plated steel vented gas cap.
      Moto Iron®
      Cam Lock Gas Cap
      $14.95
      21 reviews
      Sale
      A TC Bros. Finned Black Air Cleaner HD CV Carbs & EFI on a white background.
      A TC Bros. Finned Black Air Cleaner HD CV Carbs & EFI motorcycle parked in front of a barn.
      TC Bros.
      TC Bros. Finned Black Air Cleaner HD CV Carbs & EFI
      $109.95 $99.95 Save $10.00
      10 reviews
      A Pangor Cycles All Thumbs Idle Speed Screw For S&S Super E / G Carburetor - Brass, made in USA, on a white background.
      A close up of a Pangor Cycles All Thumbs Idle Speed Screw For S&S Super E / G Carburetor - Brass made in USA.
      Pangor Cycles
      Pangor Cycles All Thumbs Idle Speed Screw For S&S Super E / G Carburetor - Brass
      $18.95
      33 reviews
      A Moto Iron® 1/4" Fuel Valve Petcock 90 Degree with a red handle on a white background.
      A close up of a Moto Iron® 1/4
      Moto Iron®
      1/4" Fuel Valve Petcock 90 Degree
      $19.95
      25 reviews
      A ThunderMax ECM With Autotune Closed Loop System For Harley 2008-2013 with two wires attached to it.
      ThunderMax
      ThunderMax ECM With Autotune Closed Loop System For Harley 2008-2013
      $1,088.95
      A black box with two wires attached to it, ThunderMax ECM With Autotune Closed Loop System For Harley Touring 2014-2016, ThunderMax.
      A set of ThunderMax ECM With Autotune Closed Loop System For Harley Touring 2014-2016 wires and cables for a car.
      ThunderMax
      ThunderMax ECM With Autotune Closed Loop System For Harley Touring 2014-2016
      $1,088.95
      Sale
      A set of parts for a motorcycle, including a carburetor and S&S® Teardrop Air Cleaner Kit For 1993-'06 HD® Big Twins with Stock CV carburetors - Chrome from S&S Cycle.
      S&S Cycle
      S&S® Teardrop Air Cleaner Kit For 1993-'06 HD® Big Twins with Stock CV carburetors - Chrome
      $359.95 $323.96 Save $35.99
      A Dynojet Power Vision 3 11-20 Softail, 12-17 Dyna, 14-20 Sportster, 14-20 Touring, 15-20 Street 500/7 voltmeter with a cable attached to it.
      A black cable with two wires attached to the Dynojet Power Vision 3 11-20 Softail, 12-17 Dyna, 14-20 Sportster, 14-20 Touring, 15-20 Street 500/7 and ECU.
      Dynojet
      Dynojet Power Vision 3 11-20 Softail, 12-17 Dyna, 14-20 Sportster, 14-20 Touring, 15-20 Street 500/7
      $477.76
      Sale
      A Moto Iron® 1/4" NPT Male Fuel Valve Petcock with a red handle on it, featuring a stainless steel fuel filter screen.
      A stainless steel Moto Iron® 1/4
      Moto Iron®
      1/4" NPT Male Fuel Valve Petcock
      $34.95 $29.95 Save $5.00
      11 reviews
      The Vance & Hines FP4 Fuelpak Tuner for Pre-2014 Harley (see fitment chart) is a device that provides live sensor data and is compatible with Harley-Davidson models.
      Vance & Hines
      Vance & Hines FP4 Fuelpak Tuner for Pre-2014 Harley (see fitment chart)
      $505.95
      A group of Leather Cushion Washers with 3/8 inch Hole 10 pack, provided by TC Bros., providing paint protection and cushioning on a white background.
      A set of TC Bros. Leather Cushion Washers with 3/8 inch Hole 10 pack, ideal for cushioning and paint protection, on a white background.
      TC Bros.
      Leather Cushion Washers with 3/8 inch Hole 10 pack
      $6.95
      28 reviews
      Sale
      A set of TC Bros. brass fittings and hoses, perfect for the TC Bros. DIY Gas Tank Fuel Sight Gauge Kit.
      A set of TC Bros. brass fittings and Tygon hoses is available for DIY enthusiasts.
      TC Bros.
      TC Bros. DIY Gas Tank Fuel Sight Gauge Kit
      $38.95 $34.95 Save $4.00
      5 reviews
      A black and red Dynojet Power Vision 4 For Harley 2021-2023 car adapter with a red plug.
      The Dynojet Power Vision 4 For Harley 2021-2023, specifically designed for the Harley 2021-2023 models, is the perfect tuner for motorcycles.
      Dynojet
      Dynojet Power Vision 4 For Harley 2021-2023
      $444.43
      Sale
      A pink and white TC Bros. Finned Raw Air Cleaner HD CV Carbs & EFI, with a vintage style, on a white background.
      A close up of a TC Bros. Finned Raw Air Cleaner HD CV Carbs & EFI vintage style motorcycle with a red and black engine.
      TC Bros.
      TC Bros. Finned Raw Air Cleaner HD CV Carbs & EFI
      $99.95 $89.95 Save $10.00
      10 reviews
      A Prism Supply sieve with three holes for sorting and filtering.
      A Prism Supply sieve with three holes for sorting and filtering.
      Prism Supply
      Prism Supply Bristol Breather - S&S Super E Polished
      $60.00
      A Prism Supply Petcock - 1/4" NPT Stainless on a white background, giving off a fuel tank appearance.
      A Prism Supply Petcock - 1/4
      Prism Supply
      Prism Supply Petcock - 1/4" NPT Stainless
      $119.99
      Sale
      An image of a TC Bros. Air Cleaner/Carb Support Bracket for 1989-1999 Evo Big Twin CV and a gasket on a white background.
      TC Bros.
      TC Bros. Air Cleaner/Carb Support Bracket for 1989-1999 Evo Big Twin CV
      $29.95 $24.95 Save $5.00
      10 reviews
      Sale
      The TC Bros. Black Louvered Air Cleaner for S&S Super E & G Carbs is a black air filter assembly kit by TC Bros., featuring a chrome louvered air cleaner, cylindrical filter, mounting bracket, screws, and a star-shaped wing nut.
      The TC Bros. Black Louvered Air Cleaner for S&S Super E & G Carbs is a black air filter assembly kit by TC Bros., featuring a chrome louvered air cleaner, cylindrical filter, mounting bracket, screws, and a star-shaped wing nut.
      TC Bros.
      TC Bros. Black Louvered Air Cleaner for S&S Super E & G Carbs
      $62.95 $52.95 Save $10.00
      Sale
      A vintage style TC Bros. Finned Polished Air Cleaner S&S Super E & G Carbs on a white background.
      A TC Bros. Finned Polished Air Cleaner for a Harley Davidson motorcycle.
      TC Bros.
      TC Bros. Finned Polished Air Cleaner S&S Super E & G Carbs
      $129.95 $119.95 Save $10.00
      6 reviews
      Sale
      A TC Bros Air Cleaner/Carb Support Bracket for HD Twin Cam Engines with a gasket on a white background.
      A black TC Bros Air Cleaner/Carb Support Bracket for HD Twin Cam Engines mount for a gasket and a gasket designed specifically for an TC Bros Air Cleaner/Carb Support Bracket for HD Twin Cam Engines.
      TC Bros.
      TC Bros Air Cleaner/Carb Support Bracket for HD Twin Cam Engines
      $29.95 $24.95 Save $5.00
      8 reviews
      Two TC Bros 3/8 NPT Steel Weld In Petcock Bungs on a white background.
      Two TC Bros. 3/8 NPT Steel Weld In Petcock Bungs on a white background.
      TC Bros.
      3/8 NPT Steel Weld In Petcock Bungs by TC Bros
      $19.95
      6 reviews
      Sale
      Two TC Bros Breather Bolts For all Harley Twin Cam Engines - Black and washers on a white background.
      Two TC Bros Breather Bolts For all Harley Twin Cam Engines - Black and washers on a white background.
      TC Bros.
      TC Bros Breather Bolts For all Harley Twin Cam Engines - Black
      $49.95 $39.95 Save $10.00
      Sale
      A set of brass gas nozzle fittings and cleaning needles from an All Balls Mikuni 42 Series Carburetor Jet Kit arrayed on a white background.
      All Balls
      Mikuni 42 Series Carburetor Jet Kit
      $101.02 $90.92 Save $10.10
      A black V02 Cage Fighter Air Cleaner Kit For Harley 99-17 Twin Cam - Black, designed specifically for Twin Cam motorcycles and manufactured by Vance & Hines.
      Vance & Hines
      V02 Cage Fighter Air Cleaner Kit For Harley 99-17 Twin Cam - Black
      $299.95
      Sale
      A S&S Cycle brass screw on a white background. The S&S Choke Knob Enrichment Device For Super E & G Carburetors is an enrichment device used in carburetors, specifically S&S Super E.
      A brass screw for the S&S Choke Knob Enrichment Device For Super E & G Carburetors on a white background.
      S&S Cycle
      S&S Choke Knob Enrichment Device For Super E & G Carburetors
      $44.95 $40.46 Save $4.49
      16 reviews
      A close-up of a TC Bros. High Performance Washable Air Filter Element for TC Bros Air Cleaners.
      A TC Bros High Performance Washable Air Filter Element for TC Bros Air Cleaners for a white background.
      TC Bros.
      High Performance Washable Air Filter Element for TC Bros Air Cleaners
      $26.95
      18 reviews
      Sale
      A Complete Rebuild Kit Super E Carburetor S&S Cycle #11-2923 for a motorcycle by S&S Cycle.
      S&S Cycle
      Complete Rebuild Kit Super E Carburetor S&S Cycle #11-2923
      $112.95 $101.66 Save $11.29
      A close-up of a motorcycle engine showcases a Sportster points cover with a red and black emblem. Shiny chrome parts reflect light, highlighting Pangor Cycles' Cheap Sucker Bird Catcher/Air Cleaner for Harley-Davidson Carburetors, against a blurred background for sleek focus.
      A close-up of a motorcycle engine showcases a Sportster points cover with a red and black emblem. Shiny chrome parts reflect light, highlighting Pangor Cycles' Cheap Sucker Bird Catcher/Air Cleaner for Harley-Davidson Carburetors, against a blurred background for sleek focus.
      Pangor Cycles
      Cheap Sucker Bird Catcher/Air Cleaner for Harley-Davidson Carburetors and EFI Throttle Bodies
      $49.95
      A slim Prism Supply Bristol Breather - CV Polished mesh filter cover on a white background.
      A slim Prism Supply Bristol Breather - CV Polished mesh filter cover on a white background.
      Prism Supply
      Prism Supply Bristol Breather - CV Polished
      $60.00
      A Moto Iron® chrome-plated steel screw in gas cap on a white background.
      A motorcycle with a Moto Iron® chrome plated steel vented screw in gas cap parked in a garage.
      Moto Iron®
      Screw in Gas Cap
      $14.95
      4 reviews
      A Prism Supply Bristol Breather - S&S Super E Tumbled metal mesh filter on a white background.
      A Prism Supply Bristol Breather - S&S Super E Tumbled metal mesh filter on a white background.
      Prism Supply
      Prism Supply Bristol Breather - S&S Super E Tumbled
      $55.00
      A TC Bros. Gas Tank Sight Glass Kit (with steel weld in bung) and a black nut on a white background in an oil tank.
      TC Bros.
      TC Bros. Gas Tank Sight Glass Kit (with steel weld in bung)
      $29.95
      2 reviews
      A Moto Iron® flexible fuel tubing made of plasticized PVC, suitable for gasoline or alcohol type fuel, on a white background.
      Moto Iron®
      1/4" Translucent "Smoke" Black Fuel Line 3ft
      $8.95
      5 reviews
      Sale
      A Wyatt Gatling 1/4" 90 Degree Petcock With Screen Filter with a red handle on a white background.
      Wyatt Gatling
      1/4" 90 Degree Petcock With Screen Filter
      $29.04 $26.14 Save $2.90
      An image of a valve with a Left Side Spigot 13/16" Female Fuel Valve Petcock and brass handle suitable for Harley Davidson motorcycles. (Brand: Moto Iron®)
      A Left Side Spigot 13/16
      Moto Iron®
      Left Side Spigot 13/16" Female Fuel Valve Petcock
      $27.95
      6 reviews
      Sale
      The TC Bros. Air Cleaner for Harley-Davidson Bendix, Zenith, and Keihin Butterfly Carburetors features red pleated fabric and a ribbed silver metal cap. This round cleaner by TC Bros. is shown against a white background.
      This TC Bros. Streamliner Raw Air Cleaner HD CV Carbs & EFI fits stock motorcycle and motorcycle carburetor.
      TC Bros.
      TC Bros. Streamliner Raw Air Cleaner HD CV Carbs & EFI
      $99.95 $89.95 Save $10.00
      3 reviews

      Air Intake & Fuel System Upgrades for Harley Big Twins. The Big Twin Air Intake & Fuel System collection at TC Bros is built for riders looking to maximize the performance and efficiency of their Harley-Davidson Big Twin motorcycles. This category includes high-quality air cleaners, carburetor components, and fuel system upgrades designed for models like Softails, Dynas, and Touring bikes. Whether you're chasing more horsepower, smoother throttle response, or a bold custom look, these parts are precision-engineered to deliver. Transform your ride with TC Bros—where performance meets reliability for Harley Big Twin builds.