High-RPM Airflow
Naturally Aspirated Air Induction
High-RPM NA - ITB - Carb - Drag - Track - Fabrication - Full Taxonomy
Browse naturally aspirated air induction parts by airflow path, manifold design, throttle strategy, carburetion, ITB systems, ducting, sensors, fabrication, and race-ready intake support. This page leans hard into performance and racing while still covering service and OEM replacement needs.
35+ grouped sections to shop fasterWater Meth style layout across this categoryStreet, service, upgrade, and custom shopping support
35+ Main Sections
Main Sections
High-RPM NA - ITB - Carb - Drag - Track - Fabrication - Full Taxonomy
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Street To Full Builds
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Quick access to the parts families shoppers usually want first.
Routing
Intake Tubes / Pipes / Elbows
Top Seller
Air Filters
Sealed / OEM
Air Boxes / Filter Housings
Browse By Build Type
Using the Water Meth layout as the shared category shell.
Daily Driver
Street / OEM
Factory-style air boxes, replacement tubes, sensors, clamps, and service parts for cleaner daily-driver repairs.
Upgrade
Performance NA
Cold-air systems, manifolds, larger throttle bodies, high-flow filters, and response-focused upgrades for harder-running street cars.
Strip
Drag / Street Performance
Carb spacers, scoop adapters, drop-base cleaners, lightweight tubes, and strip-ready intake pieces for fast naturally aspirated combinations.
Motorsport
ITB / Open Stack / Race
ITB kits, race plenums, trumpet sets, stacks, motorsport air boxes, and high-response hardware for serious racing builds.
Custom
Universal / Fabrication
Custom boxes, filter mounts, pipes, bulkhead routing parts, weld-on fittings, and mounting hardware for swaps and one-off intake systems.
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Find Cold Air Intake Systems
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Find Intake Tubes / Pipes / Elbows
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Find Air Filters
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Grouped the same way as Water Meth so the catalog feels consistent across categories.
Showing 35 of 35 sections
Core Systems
The major naturally aspirated airflow components. This is where the biggest changes happen for throttle response, top-end flow, and overall induction layout.
Core SystemsHigh-RPM Airflow
Cold Air Intake Systems
Cold air intakes, short ram systems, ram air kits, sealed box intakes, and high-flow entry-level upgrades for naturally aspirated builds that need colder, cleaner, and less restrictive airflow.
Best for first-step NA airflow gains, improved induction sound, and cleaner inlet packaging.
Core SystemsRouting
Intake Tubes / Pipes / Elbows
Straight sections, elbows, joiners, and formed intake tubing for replacement, custom routing, engine swaps, and race-focused duct layouts where smooth path control matters.
Best for replacing restrictive tubing or building cleaner custom airflow paths.
Core SystemsTop Seller
Air Filters
Cone, panel, pod, and drop-in filters plus wraps, covers, and heavy-duty protection pieces for street, strip, track, and dusty-use induction systems.
Best for service, airflow improvement, and protecting race or street intake systems.
Core SystemsSealed / OEM
Air Boxes / Filter Housings
Sealed air boxes, carbon housings, lids, bases, snorkels, resonators, and motorsport housings for cooler air control and cleaner intake packaging.
Best for sealed cold-air layouts, OEM-style service work, and premium intake packaging.
Core SystemsPower
Intake Manifolds
Street, race, EFI, carbureted, billet, cast, sheet metal, single-plane, dual-plane, long-runner, short-runner, and tunnel-ram manifolds for serious NA powerband tuning.
Best for major airflow, torque curve, and top-end horsepower changes on NA engines.
Core SystemsThrottle Response
Throttle Bodies
Cable and DBW throttle bodies in single, dual, large-bore, billet, race, universal, and replacement formats for sharper response and stronger inlet control.
Best for throttle response, inlet control, and larger-airflow NA packages.
Core SystemsITB
Individual Throttle Body Systems
Complete ITB systems, manifolds, throttle bodies, linkage, stacks, filters, vacuum manifolds, and service components for serious naturally aspirated performance builds.
Best for sharp response, top-end power, and race-focused naturally aspirated combinations.
Core SystemsCold Air Feed
Intake Ducting / Snorkels / Ram Air
Ram-air ducting, scoops, cowl feeds, snorkels, front-feed ducts, adapters, and relocation ducting for drawing cooler air into NA induction systems.
Best for feeding colder air, improving pressure recovery, and supporting hood, cowl, or front-fed intake designs.
Core SystemsTuning
Variable Intake Runner / Intake Tuning Components
Runner control valves, actuators, intake tuning valves, IMRC deletes, and supporting hardware for tuning runner behavior on street or performance NA setups.
Best for variable-runner tuning, reliability fixes, or deleting restrictive factory control systems.
Core SystemsHigh-RPM
Intake Plenums
Billet, high-volume, upper, replacement, and race plenums plus spacers and covers for engines that benefit from refined plenum volume and high-RPM airflow behavior.
Best for volume tuning, high-RPM airflow stability, and premium custom manifold packages.
Core SystemsOpen Stack
Velocity Stacks / Trumpets
Velocity stacks, trumpets, bellmouths, socks, screens, and backing plates for high-response open-stack and ITB induction combinations.
Best for open-stack NA setups where entry shape, response, and high-RPM airflow matter.
Core SystemsCarb
Carburetion
Street and race carburetors plus classic carb induction support for naturally aspirated builds that stay mechanically simple and performance focused.
Best for carbureted street cars, drag builds, and classic V8 naturally aspirated setups.
Core SystemsClassic / Drag
Air Cleaner Assemblies
Round, oval, low-profile, raised-base, and drop-base air cleaners plus lids, bases, studs, spacers, and filter tops for classic carb setups.
Best for carbureted engines that need hood clearance, cleaner airflow, or old-school race style.
Fabrication, Racing & Specialty
Custom, motorsport, off-road, drag, ITB, and fabrication-focused sections for serious performance work and niche routing needs.
Fabrication, Racing & SpecialtyRace / Track
Race / Performance NA Induction
High-RPM manifolds, carbon intake systems, restriction-reduction parts, track ducting, hood-feed systems, and motorsport intake parts built around NA performance.
Best for serious naturally aspirated builds where airflow and top-end power come first.
Fabrication, Racing & SpecialtyDrag / Strip
Drag Racing / Street Performance Intake
Carb spacers, hood-scoop adapters, raised and drop-base air cleaners, low-restriction filters, lightweight tubes, and drag-oriented duct pieces for strip use.
Best for carb street cars, hood-scoop setups, and drag combinations chasing quick airflow and hood clearance.
Fabrication, Racing & SpecialtyITB / Motorsport
ITB / Motorsports Intake
Motorsport air boxes, trumpet sets, race plenums, ITB hardware, filter socks, backing plates, and vacuum manifolds for dedicated motorsport NA induction.
Best for race-only or race-first ITB packages where response and airflow take priority.
Fabrication, Racing & SpecialtyFabrication
Universal / Custom Fabrication Intake
Universal pipes, filter mounts, custom air boxes, ducting, bungs, sheet-metal parts, couplers, and adapter pieces for one-off naturally aspirated intake builds.
Best for swaps, engine-bay packaging work, and custom NA fabrication from scratch.
Fabrication, Racing & SpecialtyOff-Road
Off-Road / Dust Protection Intake
Snorkels, pre-filters, wraps, sealed air boxes, water-resistant covers, inlet screens, and off-road ducting for harsh-environment NA use.
Best for off-road, rally-style, or dusty-use intake systems that still need to flow well.
Fabrication, Racing & SpecialtyCustom Routing
Firewall / Bulkhead / Pass-Through Intake Parts
Bulkhead plates, sealed pass-throughs, grommets, panels, and feed adapters for compartment-separated routing and advanced custom intake layouts.
Best for cowl-fed, rear-fed, or sealed-compartment intake routing.
Fabrication, Racing & SpecialtyMounting
Intake Fabrication / Mounting
Brackets, hangers, mounting plates, sensor bung kits, weld-on fittings, tabs, and isolation mounts for building NA intake systems that fit clean and stay put.
Best for supporting custom intake systems so they look professional and survive vibration.
Fabrication, Racing & SpecialtyOEM / Service
OEM Replacement / Maintenance Intake
OEM-style air boxes, replacement tubes, resonators, clips, sensors, and filter covers for maintenance-focused repairs and restoration-minded builds.
Best for stock restorations, maintenance work, and quieter daily-driver intake service.
Fabrication, Racing & SpecialtyEVAP / Smog
Emissions / EVAP / Smog Intake Support
EVAP adapters, smog ports, intake caps, hose adapters, vacuum caps, and emissions support parts for making NA intake systems integrate cleanly with compliance hardware.
Best for street cars and swaps that still need emissions or EVAP-related routing support.
Fabrication, Racing & SpecialtyMisc
Replacement / Miscellaneous
Catch-all intake replacements and special-order support parts for vehicle-specific, universal, and oddball naturally aspirated induction needs.
Best for cleanup items, hard-to-place parts, and final oddball intake needs.
Control, Metering & Service
The support pieces that make NA intake systems run clean, seal correctly, meter accurately, and stay serviceable over time.
Control, Metering & ServiceSupport
Throttle Body Components
Adapters, spacers, gaskets, brackets, cables, linkage pieces, DBW conversion parts, and hardware for dialing in throttle actuation and fitment.
Best for adapting throttle bodies to custom manifolds and making race or swap setups work correctly.
Control, Metering & ServiceCarb Support
Carburetor Components
Jets, power valves, accelerator pumps, floats, metering blocks, linkage pieces, choke parts, and rebuild hardware for tuning carb performance and drivability.
Best for tuning fuel curve, launch behavior, and carb reliability on street or strip builds.
Control, Metering & ServiceSensors
MAF / MAP / Air Metering Components
MAF and MAP housings, adapters, flanges, sensor mounts, straighteners, and metering support parts for keeping EFI NA setups happy and calibrated.
Best for EFI conversions, custom tube builds, and keeping meter-based intake systems stable.
Control, Metering & ServiceElectronics
Intake Sensors & Electronics
IAT, MAF, MAP, TPS, idle control, DBW sensor modules, pigtails, relays, and wiring support for modern electronically managed NA induction setups.
Best for keeping modern NA intake control systems reliable, tunable, and responsive.
Control, Metering & ServiceSealing
Intake Gaskets / Seals / O-Rings
Manifold gaskets, throttle-body gaskets, plenum seals, tube seals, injector port seals, and O-rings for sealing vacuum and airflow on NA systems.
Best for eliminating leaks, stabilizing idle quality, and protecting tunability on naturally aspirated setups.
Control, Metering & ServiceRouting Support
Intake Couplers / Hoses / Clamps
Silicone couplers, reducer couplers, bends, hump hoses, flex hoses, and clamp styles used to connect and support intake tube assemblies.
Best for joining tube sections, isolating vibration, and keeping fabricated intake systems sealed.
Control, Metering & ServicePCV / Vacuum
Vacuum / Breather / PCV Intake Support
Vacuum, breather, and PCV support parts including hoses, ports, blocks, check valves, fittings, reservoirs, and caps for stable NA engine behavior.
Best for vacuum signal control, crankcase breathing, and cleaner support plumbing.
Control, Metering & ServiceHardware
Intake Hardware / Fittings / Adapters
Stud kits, bolt kits, fittings, adapters, brackets, sensor bungs, bulkhead fittings, and install hardware for intake assembly and custom routing.
Best for final assembly work and clean, reliable custom fabrication.
Control, Metering & ServiceInstall Kits
Intake Install Kits
Install kits for cold air systems, manifolds, throttle bodies, carbs, ITBs, air boxes, ram-air systems, sensors, and relocation packages.
Best for complete installs when you want hardware, seals, and support parts handled in one shot.
Control, Metering & ServiceService
Intake Service & Rebuild
Rebuild kits, service parts, cleaning kits, bellmouth replacements, and maintenance parts for throttle bodies, carbs, ITBs, filters, and air boxes.
Best for restoring worn intake systems instead of replacing entire assemblies.
Control, Metering & ServiceUpgrades
Intake Accessories & Upgrades
Heat shields, thermal barriers, spacers, bellmouths, dress-up parts, billet caps, acoustic deletes, and sound-tube deletes for better airflow and cleaner engine bays.
Best for reducing heat soak, sharpening inlet flow, and cleaning up packaging.
Control, Metering & ServiceReplacement
Intake Replacement Parts
Replacement tubes, filters, clamps, brackets, sensors, gaskets, resonators, hardware, and air-box service parts for straightforward repairs.
Best for keeping factory or aftermarket NA systems alive without buying full new kits.
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