Radium Engineering FCST-X For External Pumps

SKU: 20-1995-00

Radium Engineering FCST-X Fuel Cell Surge Tank for External Pumps

The Radium Engineering FCST-X Fuel Cell Surge Tank, the industry-leading solution designed to eliminate fuel starvation and deliver unmatched performance. Engineered with cutting-edge technology and a decade of refinement, the FCST-X is the top choice for professional racers and motorsport enthusiasts worldwide. This drop-in surge tank system offers superior reliability, simplified installation, and compatibility with high-performance external pumps, making it the best fuel system upgrade for competition vehicles.

Why Radium?

The FCST-X stands head and shoulders above other fuel surge tanks, combining innovative design with robust functionality:

• Unrivaled Performance: Prevents fuel starvation during high-G cornering, acceleration, or low-fuel conditions, ensuring consistent engine performance under extreme racing conditions.
• Advanced Dual-Chamber Design: Unlike basic trap-door systems, the FCST-X features a true 2.2L dual-chamber surge tank that maintains a steady fuel supply to external pumps, even in the most demanding scenarios.
• Seamless Integration: Designed for fuel cells with the industry-standard 6x10 24-bolt fill plate, offering a drop-in solution that eliminates complex plumbing and enhances safety.
• Versatile Pump Compatibility: Configurable with one or two -10AN (5/8") pickups or a single -16AN (1") pickup, supporting inline electric or mechanical pumps for maximum flow and flexibility.
• Enhanced Durability: Constructed from CNC-machined aluminum with anodized surfacing for superior corrosion resistance, compatible with gasoline, E85, methanol, and ethanol.
• Serviceability: Features fast-access lift handles and swappable pump modules for quick maintenance, minimizing downtime during competitive events.
• Proven by Professionals: Trusted by top motorsport teams globally for its reliability and performance in FIA-certified fuel cells and high-horsepower applications.

No other fuel surge tank matches the FCST-X’s blend of innovation, ease of use, and race-proven reliability, making it the definitive choice for serious racers.

Included:

The Radium Engineering FCST-X (SKU: 20-1995-00) is a comprehensive kit designed for external pump configurations, offering everything you need for a seamless installation (fuel pumps and fuel cell sold separately):

FCST-X Surge Tank Assembly: 2.2L dual-chamber canister with integrated lift handle and anti-rotational electrical terminals.

Fuel Pickup Options:

• Two -10AN (5/8") pickups, each with an 80-micron filter for clean fuel delivery.
• One -16AN (1") pickup (requires external filter, not included).

Fittings:

• 10AN ORB to 8AN male adapter for the “PUMP OUT” port (7/8"-14 threads).
• 8AN ORB to 6AN male adapter for the “RETURN” port (3/4"-16 threads).
• 12AN ORB fitting with 8AN male outlet for the “VENT” port (1-1/16"-12 threads, compatible with standard fuel filling).

Filtration:

• Two 80-micron filters for -10AN pickups (included).
• Note: 16AN pickup requires an external filter (e.g., Radium 14-0143 Filter Sock recommended for lift pump).

Mounting Hardware: All necessary stainless steel hardware for secure installation in compatible fuel cells.

Additional Components:

• One-way fill valves to maintain surge tank fuel volume.
• Dynamic safety vent valve with rollover protection and fuel fill shut-off.

Note: Fuel pumps (lift and external) and fuel cell are not included. Recommended lift pump: Walbro F90000295 with 14-0143 Filter Sock for maximum flow. For dual -10AN pickups with 12AN inlet pumps, the 20-0737 Distribution Block is recommended (sold separately). For deep fuel cells (>10" depth), the 20-0214 Lift Pump Extension Bracket is required (sold separately).

Fitment:

The FCST-X (SKU: 20-1995-00) is a universal fuel system component designed for competition vehicles equipped with a compatible fuel cell. It is not vehicle-specific but fits any make, model, or year that meets the following fuel cell criteria:

Fuel Cell Requirements:

• Industry-standard 6x10 24-bolt flange opening on the top face.
• Minimum cell depth of 7.7" (196mm) from the outer top face to the internal bottom face.
• Compatible with Radium Engineering RA-series fuel cells, Fuel Safe Pro Cell®, Enduro®, Race Safe®, and other FIA-FT3 certified fuel cells with foam baffling and a 6x10 24-bolt fill plate.

Applications: Ideal for race cars with high-performance upgrades, including forced induction (turbocharged or supercharged), running alcohol fuels (E85, methanol), or requiring extra fuel flow for engines producing 500+ horsepower.

Examples of Use: Suitable for professional racing disciplines (drift, rally, circuit, drag) and custom builds across brands like Toyota, Nissan, BMW, Ford, Chevrolet, Porsche, Subaru, Mitsubishi, and more, provided the fuel cell meets the above specifications.

Part Numbers

Primary SKU: 20-1995-00 (FCST-X for External Pumps, pumps not included).

Optional Accessories (sold separately):

20-0737: Distribution Block for dual -10AN pickups with 12AN inlet pumps.

20-0214: Lift Pump Extension Bracket for fuel cells deeper than 10".

14-0143: Filter Sock for Walbro F90000295 lift pump.

20-0535: 12AN male fitting for quick-fill dry break systems.

Recommended Lift Pump: Walbro F90000295 (compatible with F90000267/274/285 series).