These are the finest EFI fuel pressure regulators ever built. All share the same highly developed valve geometry for the most stable and accurate fuel pressure regulation. The F4 is our flagship model, with four pressure ports to maximize your fuel hose routing possibilities. The F2 is our most popular model, and the F1 is the value oriented customer's dream product...check out the price!!!

All Fore Precision Regulators:
1:1 boost referenced (boost reference may be disabled)
Stable and controllable up to 2000 hp
Low mass valve poppet for ultra quick response
Nomex reinforced Viton diaphragm for longest life in high heat and aggressive fuel applications. 
Fine pitch adjustment screw with ball bearing mechanism for precise pressure adjustment 
Adjustable for 25-70 psi base pressure
Streamlined housing internals for no loss in flow-through applications
Chatter-free design reduces wear and fatigue on all internal components
Low stress spring design for superior long term stability and spring life 
Low valve seat force and hardened poppet ensures long valve life
Indexable spring hat to orient boost port in any direction (1/8NPT to 1/4" hose barb fitting included) 
All stainless steel hardware

These are the finest EFI fuel pressure regulators ever built. All share the same highly developed valve geometry for the most stable and accurate fuel pressure regulation. The F4 is our flagship model, with four pressure ports to maximize your fuel hose routing possibilities. The F2 is our most popular model, and the F1 is the value oriented customer's dream product...check out the price!!!

All Fore Precision Regulators:
1:1 boost referenced (boost reference may be disabled)
Stable and controllable up to 2000 hp
Low mass valve poppet for ultra quick response
Nomex reinforced Viton diaphragm for longest life in high heat and aggressive fuel applications. 
Fine pitch adjustment screw with ball bearing mechanism for precise pressure adjustment 
Adjustable for 25-70 psi base pressure
Streamlined housing internals for no loss in flow-through applications
Chatter-free design reduces wear and fatigue on all internal components
Low stress spring design for superior long term stability and spring life 
Low valve seat force and hardened poppet ensures long valve life
Indexable spring hat to orient boost port in any direction (1/8NPT to 1/4" hose barb fitting included) 
All stainless steel hardware

These are the finest EFI fuel pressure regulators ever built. All share the same highly developed valve geometry for the most stable and accurate fuel pressure regulation. The F4 is our flagship model, with four pressure ports to maximize your fuel hose routing possibilities. The F2 is our most popular model, and the F1 is the value oriented customer's dream product...check out the price!!!

All Fore Precision Regulators:
1:1 boost referenced (boost reference may be disabled)
Stable and controllable up to 2000 hp
Low mass valve poppet for ultra quick response
Nomex reinforced Viton diaphragm for longest life in high heat and aggressive fuel applications. 
Fine pitch adjustment screw with ball bearing mechanism for precise pressure adjustment 
Adjustable for 25-70 psi base pressure
Streamlined housing internals for no loss in flow-through applications
Chatter-free design reduces wear and fatigue on all internal components
Low stress spring design for superior long term stability and spring life 
Low valve seat force and hardened poppet ensures long valve life
Indexable spring hat to orient boost port in any direction (1/8NPT to 1/4" hose barb fitting included) 
All stainless steel hardware