FlowBelow Aero

What FlowBelow Aero does

FlowBelow Aero, Inc. is a privately held U.S. Tier-1 supplier of aerodynamic systems for Class-8 commercial trucks, founded in 2012 in Round Rock, Texas, by mechanical and aerospace engineers Josh Butler (President and CTO) and Kyle Walker (VP Engineering), with Ted Simmonds serving as CEO. The company designs and manufactures a portfolio of patented hardware products—including Quick-Release Wheel Covers, the Tractor AeroKit with Flex Fairing, AeroFender quarter-fender replacements, and the Trailer AeroSlider suspension-mounted system—that reduce aerodynamic drag around exposed rotating wheels and tractor/trailer underbodies, with third-party-verified fuel savings of up to 2.23% per SAE Type II testing.

Product development is grounded in computational fluid dynamics modeling, wind tunnel validation, and over-the-road fleet testing, and is protected by U.S. patents on the quick-release latching and valve-routing mechanisms, registered trademarks across the product family, EPA SmartWay verification, and ISO 9001 / ISO 14001 / IATF 16949 certifications. The flagship Wheel Covers with Easy Air Access, launched in February 2026 in partnership with Pressure Systems International, integrates TireView TPMS infrastructure into the wheel cover to streamline tire-pressure management.

FlowBelow operates an OEM-embedded go-to-market: products are specified as factory-installed options on new Freightliner Cascadia, International LT, Volvo VNL, Mack Anthem, Peterbilt 579, and Kenworth T680 trucks, with both International and Daimler standardizing the wheel covers on their 2021 model-year platforms. Revenue is generated through OEM hardware sales, dealer aftermarket distribution, direct fleet sales, and modification-center installation, with fleet pricing on a quote basis and a limited-time $260 wheel cover promotional price point. Named enterprise customers include Swift Transportation, P.A.M. Transport, Mesilla Valley Transportation, McLane, USA Truck, Bison Transport, Arnold Bros. Transport, and Ascend, with a stated cumulative base of more than 300,000 products deployed and more than 145 million gallons of fuel saved since 2009.

Name

FlowBelow Aero

Legal name

FlowBelow Aero, Inc.

Website

https://flowbelow.com

Company type

Private

Founded year

2012

Operating status

Operating

Headcount range

11–50 employees

Short description

FlowBelow Aero designs and manufactures patented aerodynamic hardware—wheel covers, drive fairings, fenders, and trailer underbody systems—for Class-8 commercial trucks, selling factory-installed to all major North American OEMs and via dealer aftermarket to large fleets to reduce fuel consumption by up to 2.23%.

Ownership category

akta.pro rank

Product category

Commercial Truck Aerodynamics

NAICS

Truck Trailer Manufacturing (336212), Heavy Duty Truck Manufacturing (336120)

SIC

Truck Trailers (3715), Aircraft & Parts (3720)

akta.pro primary industry

Class 4–6 Medium-Duty Truck Manufacturing (IMACABAB)

akta.pro secondary industry

Semi-Trailer Manufacturing (Dry Van/Reefer/Tanker/Lowboy) (IMACAGAB)

Keywords

• Commercial truck aerodynamics
• Fuel-saving aerodynamic kits
• Tractor wheel covers
• Trailer aerodynamic fairings
• Class 8 truck drag reduction

Headquarters

HQ city

Austin

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Personnel, Technology or R&D, Marketing or Sales, Operations

Revenue model

1. Hardware Sales - OEM: Products sold as factory-installed options on new trucks through OEM partnerships with Freightliner, International, Volvo, Mack, Peterbilt, and Kenworth.
2. Aftermarket Hardware Sales: Direct sales of wheel cover kits, AeroKits, and replacement parts through online store and OEM dealers for retrofit installation on existing vehicles.
3. Parts and Accessories: Replacement parts, custom colors, and consumable items sold through parts catalog.

Pricing tiers

Go-to-market motion3 records

Distribution channels4 records

Marketing channels5 records

Core offering

FlowBelow Aero designs, manufactures, and sells aerodynamic systems—including wheel covers, drive wheel fairings, trailer skirts, and fenders—that reduce aerodynamic drag and fuel consumption on Class 8 commercial trucks. Products are sold as factory-installed OEM options through Freightliner, International, Volvo, Mack, Peterbilt, and Kenworth, as well as aftermarket retrofit kits through dealer networks and direct channels.

Product overview

FlowBelow Aero offers a portfolio of fuel-saving aerodynamic products for the commercial trucking industry. The core product line includes the Tractor AeroKit (with Flex Fairing), which combines drive wheel fairings and quick-release wheel covers, and standalone Wheel Cover Kits. Additional products include the AeroFender for quarter fender upgrades and the Trailer AeroSlider for trailer aerodynamics. The Easy Air Access system is an innovative upgrade that integrates tire pressure management into wheel covers. Products are available as factory-installed OEM options or for aftermarket retrofit, and are manufactured in the USA with fuel savings verified by third-party SAE Type II testing.

Differentiator

Problem solved

Functional benefit

Brands

• Tractor AeroKit: Complete aerodynamic system for tractors including drive wheel fairings and wheel covers that reduces aerodynamic turbulence and improves fuel efficiency.
• Trailer AeroSlider
• AeroFender
• Quick-Release Wheel Covers
• Easy Air Access

Products and services

• Wheel Cover Kits Patented Quick-Release Aerodynamic Wheel Covers for tractors and trailers. Tool-free push and turn quick-release latching system for easy wheel access. Saves approximately 7 months ROI for fleets and offers 1.74% fuel savings.
• Tractor AeroKit with Flex Fairing Complete aerodynamic system for tractors including drive wheel fairings and wheel covers. Improves fuel savings by up to 1.26 cents per mile. Features Flex Fairing technology with rubber alloy TPE material that bends under impact and returns to original shape. Includes all-aluminum support brackets and 5-year/500,000-mile warranty.
• AeroFender Aerodynamic quarter fender replacement that reduces drag on day and sleeper-cab trucks. Improves fuel efficiency by up to 1.44% or 0.6 cents per mile by re-directing airflow ahead of and around a power unit's leading drive axle. Installs in 30-45 minutes using existing hole configuration.
• Trailer AeroSlider Aerodynamic system for trailers mounted directly to the sliding trailer suspension. Consists of quick-release wheel covers, fairings positioned between and behind trailer wheels, and aerodynamic mud flaps. EPA SmartWay verified with fuel savings of 1.37% to 2.07% depending on version (Stage 1 or Stage 2).
• Wheel Covers with Easy Air Access Enhanced wheel cover system that extends inner and outer tire pressure valves through the center of the aerodynamic wheel cover. Enables tire pressure checks and inflation without removing wheel covers. Compatible with all TPMS systems including P.S.I. TireView/TireView LIVE. Shaves 90 seconds off tire pressure check activities.

Quantifiable outcome

• Up to 2.23% fuel savings (Tractor AeroKit)
• +7 more outcomes

Named customers8 records

Segments3 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration2 records

Feature4 records

Partnerships

Twelve partnerships are on record, tiered core, flagship and regional.

• Pressure Systems International (P.S.I.)coreTechnology or Integration · 20 March 2026Partnership to develop Easy Air Access aero wheel cover system. P.S.I. supplies air line components and TireView/TireView LIVE TPMS systems integrated into FlowBelow's wheel covers for simplified tire pressure management.
• Mack TrucksflagshipOEM/ Whitelabel/ Licensing Partner · 26 October 2020FlowBelow offered as factory option for Mack Anthem. Maximizes fuel efficiency with factory-installed FlowBelow system.
• Alliance PartsregionalChannel Partner/ Reseller/ Distributor · 1 April 2020Alliance Parts customers gain access to all FlowBelow manufactured parts, expanding distribution reach in North America.
• Navistar Inc.flagshipOEM/ Whitelabel/ Licensing Partner · 27 October 2019Supply agreement for two aerodynamic configurations for International LT Series MPG packages. Jointly developed Custom Drive-Wheel Fairing system for 2020 International LT Series MPG Package.
• Peterbilt Motors Company (PACCAR)flagshipOEM/ Whitelabel/ Licensing Partner · 1 January 2017FlowBelow Tractor AeroKit available as dealer-installed option on Peterbilt 579 and factory-installed option through P.A.M. Transport orders. Tier 1 supplier to PACCAR.
• Daimler Trucks North America (DTNA)flagshipOEM/ Whitelabel/ Licensing Partner · 12 October 2016FlowBelow Tractor AeroKit offered as option on Freightliner Cascadia Evolution and New Cascadia trucks. Tier 1 supplier agreement for factory installation. DTNA also makes products available for aftermarket through all Freightliner dealers.
• Andromeda Business Solutions S.A. de C.V.regionalChannel Partner/ Reseller/ Distributor · 4 October 2016Major Mexican distributor partnership to distribute FlowBelow Tractor AeroKit technology in Mexico. Andromeda supplies FlowBelow's tractor-mounted aerodynamic technology to Mexican carriers.
• Groupe Trans-WestregionalChannel Partner/ Reseller/ Distributor · 1 May 2016Canadian distribution partnership through which Trans-West conducted extensive testing and implemented fleet-wide adoption program. Distribution expanded to Manitoba, Quebec, and Ontario provinces.
• Kenworth (PACCAR)flagshipOEM/ Whitelabel/ Licensing PartnerFlowBelow Tractor AeroKit available for factory installation on new Kenworth T680 trucks through dealer network.
• Volvo TrucksflagshipOEM/ Whitelabel/ Licensing PartnerVolvo offers factory installation for proprietary drive wheel fairings on All New Volvo VNL and VNR. Co-developed Volvo-specific fairing solutions.
• Fontaine Modification CenterregionalImplementation/ SI/ Consulting PartnerModification center for installation of FlowBelow products on Volvo trucks and other applications requiring professional installation.
• MVT SolutionscoreTechnology or IntegrationIndependent third-party fuel economy testing organization that validates FlowBelow product fuel savings through track testing using EPA SmartWay guidelines and SAE Type II procedures.

Scale indicators7 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Stemco (Transportation Technologies / STEMCO parent): Stemco manufactures wheel-end, aerodynamic, and trailer skirt products for commercial trucks — including products acquired from ATDynamics, Transtex, and Laydon. Direct competitor to FlowBelow in trailer side skirts, wheel covers, and trailer aerodynamic kits serving Class 8 fleets.
• Transtex (a STEMCO brand): Transtex is a leading manufacturer of trailer aerodynamic side skirts and tails for Class 8 trailers — directly comparable to FlowBelow's Trailer AeroSlider system serving the same SmartWay-verified trailer-aero fleet segment.
• Laydon Manufacturing: Laydon manufactures trailer side skirts and aerodynamic devices for commercial trailers, primarily serving fleets and OEMs. Directly competes with FlowBelow in the trailer-aero category.

Emerging players

• FreightWing: FreightWing makes aerodynamic side skirts and tail devices for trailers — overlapping FlowBelow's Trailer AeroSlider product line with comparable SmartWay-verified savings claims.
• AeroVolution: AeroVolution produces aerodynamic wheel covers and trailer drag-reduction devices for commercial trucks — a direct product-category peer to FlowBelow's wheel covers and AeroFender, at smaller scale.

Broad incumbents

• SAF-HOLLAND: SAF-HOLLAND is a Tier-1 trailer axle, suspension, and wheel-end supplier serving Class 8 trailer OEMs — overlapping with FlowBelow's OEM channels and increasingly bundling aerodynamic and tire-system products.
• ConMet: ConMet (Consolidated Metco) supplies wheel hubs, brake drums, and structural components to Class 8 truck and trailer OEMs. A broad wheel-end Tier-1 incumbent that could bundle or compete with FlowBelow's wheel-area products.
• WABCO / ZF Commercial Vehicle Control Systems: WABCO (now part of ZF) supplies broad active-safety, braking, and air-management systems to Class 8 OEMs and aftermarket — comparable distribution and OE-embedded business model through Daimler, PACCAR, and Volvo channels similar to FlowBelow's.

Others

• Pressure Systems International (P.S.I.): P.S.I. is FlowBelow's explicit technology partner for TireView / TireView LIVE TPMS integration with Easy Air Access wheel covers. Adjacent rather than directly competing — but a natural peer in commercial-truck tire-management and telemetry.
• Grote Industries: Grote manufactures vehicle lighting, electrical, and safety accessories for commercial trucks, distributed through the same OEM dealer aftermarket channels as FlowBelow — comparable go-to-market infrastructure if FlowBelow expands beyond aerodynamics.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UCBnKk6LzGdLNwmNjNTVmQ0g
• Facebookfacebook.com/FlowBelow
• LinkedInlinkedin.com/company/flowbelow
• Instagraminstagram.com/flowbelow
• Xx.com/FlowBelow

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Funding overview

Funding rounds5 records

Investors2 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about FlowBelow Aero