The Radium Engineering FCST-X is a lightweight 2.6L fuel cell surge tank that feeds high-pressure pumps without starvation during hard cornering, braking, and acceleration. This version accepts Bosch BR540 (DW400) pumps in swappable modules (up to 4), with fast 9-bolt pump access and an integrated lift handle. Compatible with E85 and other fuels. Universal fitment; pumps not included.
| Product | FCST-X Fuel Cell Surge Tank |
| Capacity | 2.6L |
| Pump Compatibility | Bosch BR540 / DeatschWerks DW400 |
| Fuel Compatibility | Gasoline / E85 |
| Fitment | Universal |
| Pumps Included | No |
| Part Number | 20-1991-00 |
Shipping: In-stock orders placed before 3 PM EST ship the same day, and everything else ships within 24 hours. Standard, expedited, and overnight options are available at checkout. Backordered items ship as soon as we get them back in stock. Contact us for lead times. See the full Shipping Policy.
Returns: 30-day returns on new, unused items in original packaging. See the full Refund Policy.
