Big Twin Air Intake & Fuel System

    Filter
      183 products
      Harley-Davidson aftermarket carburetor filter kit with TC Bros Breather Bolts For 1991-2022 Sportster & EVO Big Twin for improved crankcase venting.
      Harley-Davidson aftermarket carburetor filter kit with TC Bros Breather Bolts For 1991-2022 Sportster & EVO Big Twin for improved crankcase venting.
      TC Bros.
      TC Bros. Breather Bolts for Harley-Davidson Sportster 1991-2022 and Evo Big Twin 1993-1999
      from $44.95
      Various metal and plastic hardware, including bolts, washers, mesh screens, retaining rings, and gaskets—such as TC Bros. Breather Bolts for Harley-Davidson Twin Cam—are displayed on a white background.
      A set of TC Bros breather bolts for all Harley Twin Cam Engines, including crankcase venting.
      TC Bros.
      TC Bros. Breather Bolts for Harley-Davidson Twin Cam
      from $44.95
      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
      170 reviews
      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
      47 reviews
      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
      17 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
      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
      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
      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
      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
      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
      Upgrade your Harley-Davidson with an S&S Cycle Super E Carburetor Kit for 1993-'99 Big Twin Models for increased horsepower.
      S&S Cycle
      Super E Carburetor Kit for 1993-'99 Big Twin Models
      $782.95
      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 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
      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
      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
      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
      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 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
      8 reviews
      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
      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 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
      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 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
      A TC Bros. Finned Polished Air Cleaner HD CV Carbs & EFI on a white background.
      Harley-Davidson motorcycle enthusiasts can now customize their bikes with a TC Bros. Finned Polished Air Cleaner HD CV Carbs & EFI to enhance the classic aesthetic.
      TC Bros.
      TC Bros. Finned Polished Air Cleaner HD CV Carbs & EFI
      $129.95
      4 reviews
      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
      from $62.95
      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 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
      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
      10 reviews
      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
      10 reviews
      A 1/4" NPT Male Brass Fuel Petcock by Prism Supply Co fitting with a threaded end, perfect for connecting to a gas tank.
      A motorcycle with a Prism Supply gas tank attached to it.
      Prism Supply
      1/4" NPT Male Brass Fuel Petcock by Prism Supply Co
      $94.95
      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
      10 reviews
      A S&S Cycle Basic Rebuild Kit for Super E & Super G with gaskets and seals.
      S&S Cycle
      Basic Rebuild Kit for Super E & Super G
      $61.95
      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
      A stainless steel pipe with a Pingel Straight Fuel Valve - 22mm handle on it.
      Pingel
      Pingel Straight Fuel Valve - 22mm
      $178.95
      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
      3 reviews
      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 Yost Intake Manifold Wrench For 1984-up Sportster & Big Twin on a background.
      Yost
      Intake Manifold Wrench For 1984-up Sportster & Big Twin
      $11.95
      A Prism Supply Petcock - 90° 1/4" NPT - Stainless on a white background from Prism Supply.
      A Prism Supply Petcock - 90° 1/4
      Prism Supply
      Prism Supply Petcock - 90° 1/4" NPT - Stainless
      $129.99
      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
      16 reviews
      A black 1/4" Petcock Fuel Valve - Straight - Black by Drag Specialties on a white background.
      Drag Specialties
      1/4" Petcock Fuel Valve - Straight - Black
      $45.85
      A Moto Iron® Black Cam Lock Gas Cap on a white background.
      A Moto Iron® Black Cam Lock Gas Cap with a metal knob on it.
      Moto Iron®
      Black Cam Lock Gas Cap
      $14.95
      15 reviews
      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
      A black mesh bag with the word "Arlen Ness" on it that includes a Rain Sock for Stage 1 Arlen Ness Big Suckers.
      A black cover for a black wheel on a white background, like the Rain Sock for Stage 1 Arlen Ness Big Suckers from Arlen Ness.
      Arlen Ness
      Rain Sock for Stage 1 Arlen Ness Big Suckers
      $39.95
      A Moto Iron® Straight Spigot 3/8" NPT Male Fuel Valve Petcock with a wooden handle and a show chrome finish on a white background.
      A Moto Iron® Straight Spigot 3/8
      Moto Iron®
      Straight Spigot 3/8" NPT Male Fuel Valve Petcock
      $27.95
      2 reviews
      An image of a Moto Iron® 13/16" Female Fuel Valve Petcock 90 Degree with a white background.
      A Moto Iron® 13/16
      Moto Iron®
      13/16" Female Fuel Valve Petcock 90 Degree
      $27.95
      7 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 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
      A Moto Iron® black screw-in gas cap with a light on it.
      An image of a Moto Iron® Black Screw In Gas Cap hose connector.
      Moto Iron®
      Black Screw In Gas Cap
      $14.95
      24 reviews
      A black Accelerator Pump Diaphragm Kit Keihin Carbs 76-Up (Butterfly & CV) & also S&S Super E & G spring and spring kit for the Harley Davidson chopper by Mid-USA.
      TC Bros offers a high-quality Accelerator Pump Diaphragm Kit Keihin Carbs 76-Up (Butterfly & CV) & also S&S Super E & G for Harley Davidson motorcycles, including an accelerator pump diaphragm from Mid-USA for improved performance.
      Mid-USA
      Accelerator Pump Diaphragm Kit Keihin Carbs 76-Up (Butterfly & CV) & also S&S Super E & G
      $15.60
      1 review
      A TC Bros. Ripple Polished Air Cleaner S&S Super E & G Carbs stands out on a white background.
      A vintage TC Bros. Ripple Polished Air Cleaner S&S Super E & G Carbs on a white background.
      TC Bros.
      TC Bros. Ripple Polished Air Cleaner S&S Super E & G Carbs
      $129.95
      2 reviews
      Various components of a vehicle's All Balls fuel pump rebuild kit, including the pump, filter, hoses, and electrical connectors.
      All Balls
      Fuel Pump Rebuild Kit - For '04-'17 Big Twin '05-'17 V-Rod '06-'09 Dyna Models
      $92.24
      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
      A TC Bros. Ripple Raw Air Cleaner HD CV Carbs & EFI on a white background.
      TC Bros. motorcycle with a vintage style and a TC Bros. Ripple Raw Air Cleaner HD CV Carbs & EFI.
      TC Bros.
      TC Bros. Ripple Raw Air Cleaner HD CV Carbs & EFI
      $99.95
      2 reviews
      A Pangor Cycles All Thumbs Idle Speed Screw For S&S Super E / G Carburetor - Antique Brass on a white background.
      A close-up of an adjustable Pangor Cycles All Thumbs Idle Speed Screw For S&S Super E/G Carburetor - Antique Brass machine.
      Pangor Cycles
      Pangor Cycles All Thumbs Idle Speed Screw For S&S Super E / G Carburetor - Antique Brass
      $17.95
      1 review
      An image of a Moto Iron® Straight Spigot 13/16" Female Fuel Valve Petcock on a white background.
      A Moto Iron® straight spigot 13/16
      Moto Iron®
      Straight Spigot 13/16" Female Fuel Valve Petcock
      $27.95
      3 reviews
      A TC Bros. Finned Black Air Cleaner S&S Super E & G Carbs, showcasing a vintage style, on a white background.
      Vintage style TC Bros. Finned Black Air Cleaner S&S Super E & G Carbs kit for motorcycle models Honda CBR600RR, CBR650RR, and CBR.
      TC Bros.
      TC Bros. Finned Black Air Cleaner S&S Super E & G Carbs
      $109.95
      3 reviews
      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
      5 reviews
      A 5/16" blue Helix Fuel Line 3ft made of plasticized PVC on a white background.
      Helix
      5/16" Blue Fuel Line 3ft
      $13.95

      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.