Radium - Top Feed Fuel Rail Kit for Mazda 13B-REW (RX-7 FD3S)
Primary Fuel Rail Only
$188.00
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Radium - Top Feed Fuel Rail Kit for Mazda 13B-REW (RX-7 FD3S)
$188.00
SKU: 20-0445
The Radium Engineering Top Feed Fuel Rail Kit for Mazda 13B-REW (RX-7 FD3S) converts the restrictive rotary factory side-feed setup to modern high-performance top-feed fuel injectors.
Both primary and secondary rails are CNC-machined from billet 6061 aluminum, feature large internal bores, and are equipped with three -8AN ORB ports for custom high-flow plumbing.
Key Features:
- Primary Rail (20-0445): Fits 13B-RE and 13B-REW intake setups using 34mm short top-feed injectors.
- Secondary Rail (20-0447): Fits 13B-REW intake manifolds using 60mm standard top-feed injectors. Compatible with OEM 2-port or aftermarket 4-port manifolds.
- Fuel Compatibility: Safe for all fuels including E85 ethanol and methanol blends.
Motorsport & Competition Notice: This performance component is engineered and intended strictly for off-road closed-course racing and organized motorsport competition use.