01
Broad system coverage
FLO Supply spans AN adapters, hose, reusable and crimp ends, bulkheads, clamps, fuel-delivery parts, CO₂ components, valves, tanks, tools, and fabrication hardware.
RACE SPECFLO Supply Performance Plumbing
Performance plumbing without the hype
Why builders choose FLO Supply
The right plumbing is chosen by application—not by the loudest claim. FLO Supply gives racers, builders, and fabricators the hose, fittings, adapters, and supporting hardware needed to plan a connected system around real pressure, temperature, fluid, routing, and service requirements.
Reusable + CrimpedChoose the right assembly method
Complete SystemsHose, ends, adapters and hardware
Technical SupportApplication help from real people
Trackside Identity
Get with the FLO.
Performance plumbing for racers and builders
From the FLO race shop
Hardware built into the program.
Start with the connection, route the system correctly, and finish it with components selected for the job.
01PTFE Series
PTFE Hose Ends
Reusable connection options for compatible FLO PTFE-lined hose assemblies.
→02AN Routing
AN Adapters
Straight, angled, swivel, bulkhead, tee, reducer, and specialty routing solutions.
→03System Control
Control Hardware
Valves, CO₂ components, regulators, solenoids, and system-support hardware.
→Objective advantages
What sets FLO Supply apart?
A serious performance-plumbing line should help you connect, route, secure, service, and finish the complete system—not just sell you one common adapter.
02
Application-focused options
Select components around the fluid, pressure, temperature, connection type, hose size, and routing needs of the vehicle. Always verify the individual product specifications.
03
Reusable or crimped
Choose compatible reusable hose ends for properly planned assemblies or order measured crimped hose assemblies built for applications that require a professional crimp.
04
Performance materials
Many FLO aluminum fittings use 6061 aluminum with an anodized finish. Materials vary by product, so confirm the construction, seal material, and liner for your application.
05
Real technical support
Sales and technical-support staff can help identify thread types, select compatible hose and ends, plan a system, and troubleshoot an installation.
06
Product support
Eligible Nitro Dave's product lines include a limited 90-day warranty against defects in material or workmanship. Review the complete policy and application requirements before purchasing.
More than fittings
Build the complete system.
FLO Supply covers the connections and supporting hardware builders need from initial routing through final service.
Browse the catalog- AN adapters and reducers
- Reusable hose ends
- Crimp hose ends
- PTFE-lined hose
- Synthetic-rubber-lined hose
- Bulkheads, tees and unions
- Caps, plugs and seals
- Clamps and separators
- Fuel-delivery components
- CO₂ hardware
- Catch cans and tanks
- Shut-off valves
- Oil-cooler adapters
- Turbo-drain adapters
- Weld-on bungs
- Installation tools
Race plumbing tech inspection
How to evaluate performance plumbing
A reliable race-car plumbing system begins with the specifications of the complete assembly. Use these requirements to evaluate FLO Supply hose, fittings, adapters, seals, and supporting hardware for your vehicle.
| Inspect | Why it matters |
|---|---|
| Hose construction | PTFE and synthetic-rubber liners differ in fuel compatibility, permeation, flexibility, temperature capability, and intended service. |
| Fluid compatibility | Gasoline, E85, methanol, oil, coolant, brake fluid, air, CO₂, and nitrous may require different hose, fitting, and seal materials. |
| Working pressure | Ratings can change by hose construction, hose size, end design, assembly method, temperature, and manufacturer. |
| Temperature range | Underhood heat and fluid temperature must remain inside the limits published for every component in the assembly. |
| Fitting design | Material, angle, bend radius, machining, sealing method, and overall dimensions affect routing and serviceability. |
| Configurations | Straight and angled ends, adapters, reducers, tees, bulkheads, and specialty connections determine whether a system can be routed cleanly. |
| Assembly method | Reusable, push-on, and crimped systems use different hose, ends, tools, and installation procedures. Components must be designed to work together. |
| System breadth | A broad catalog makes it easier to source related adapters, clamps, valves, filters, tools, and service parts from a connected line. |
| Support & availability | Correct guidance and accessible replacement components can matter when a vehicle is being built, repaired, or serviced at the track. |
Build one connected FLO Supply system.
FLO Supply helps builders plan around hose construction, reusable or crimped ends, AN sizes, fitting angles, adapters, valves, mounting hardware, and application guidance. The correct combination is the one whose published specifications match the fluid, pressure, temperature, routing, and service requirements of the vehicle.
Performance plumbing FAQ
Choose the right AN hose and fittings.
Planning race-car plumbing starts with the application. Before choosing FLO Supply AN fittings, PTFE hose, reusable hose ends, or a custom crimped hose assembly, identify the fluid, operating pressure, temperature, hose size, thread type, routing, and service requirements.
FLO Supply performance plumbing can support fuel-system, oil, coolant, air, vacuum, CO₂, nitrous, catch-can, and fabrication projects when every component is selected according to its published specifications.
Race fuel plumbingPTFE fuel hoseOil linesCoolant linesCO₂ systemsNitrous plumbingTurbo drainsCatch cans
What are AN fittings used for?
AN fittings are threaded fluid connections commonly used in automotive and racing plumbing. Depending on their design and specifications, they may be used in fuel, oil, coolant, air, vacuum, CO₂, nitrous, and other performance systems. The hose, fitting, adapter, and seal must all be compatible with the application.
What is the difference between PTFE and rubber-lined hose?
PTFE-lined hose and synthetic-rubber-lined hose differ in flexibility, vapor permeation, temperature range, pressure capability, and fluid compatibility. PTFE is often considered for modern fuels and demanding performance plumbing, but the exact hose specification—not the liner name alone—must determine suitability.
Should I use reusable or crimped hose ends?
Reusable AN hose ends can be assembled and serviced with the correct compatible hose and tools. Crimped hose assemblies use dedicated ends, collars, dies, and crimp specifications. FLO custom crimped hoses are assembled in the shop to the measurements and configuration selected by the customer.
How do I measure a custom crimped hose?
Measure the completed assembly using the required end-to-end reference for the selected fittings, then confirm hose size, length, fitting angle, clocking, and connection type. Measure the vehicle routing before ordering and avoid forcing the hose below its allowed bend radius.
Can FLO Supply hose be used for E85 or methanol?
Fluid compatibility depends on the exact hose liner, outer construction, fittings, seals, temperature, and pressure. Do not assume every FLO hose or fitting is universally compatible. Confirm the specifications for the individual products before using E85, methanol, gasoline, oil, coolant, or another fluid.
What should I check before ordering FLO performance plumbing?
Confirm hose construction, fluid compatibility, working pressure, temperature range, available AN size, fitting angles, assembly method, routing, bend radius, and connection types. Contact FLO Supply technical support when an application requires additional guidance.
Build it right the first time
The right setup starts with the right specifications.
Start with your fluid, pressure, temperature, hose size, fitting angles, routing, and assembly method—then build a FLO Supply plumbing system designed around the vehicle.