Air and Fuel› Fuel Injection Systems and Components - Electronic

Flow Force

FF640 640cc/725cc Fuel Injector Kit

$329.00

SKU: FF-640-NB

In Stock
In Stock
Ships by Jul 29
Free Shipping
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The FlowForce FF640 is a plug-and-play injector kit for NA/NB Miatas. These injectors flow at 640cc in NA Miatas and 725cc in NB Miatas, providing clean idle quality and headroom for performance builds. The kit uses new OEM EV14 injectors matched to within +/-1% at idle and wide open flow. It is suitable for turbocharged builds targeting approximately 300-350hp.

Fitment

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandFlow Force
Part NumberFF-640-NB
CategoryAir and Fuel

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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