SCR 13B FC Intake Manifold Top Hat and Throttle Body Kit
Upgrade your FC inlet manifold with this FD Style  manifold hat, featuring wider, smoother-flowing runners than the OEM FD design. Engineered for DIY builders, this kit replaces your stock FC RX-7 top hat to boost inlet air speeds, unlock horsepower, and simplify access to fuel rails and hidden components—while giving your 13B engine a sleek more modern vibe.
Flow-tested and dyno-proven, it delivers a 31hp gain over OEM at identical boost levels. Now available with an optional idle control motor for enhanced tuning precision!
 
What’s Included:
Top inlet hat (durable black powder-coated finish)
80mm SCR throttle body with TPS (Throttle Position Sensor)
Upper inlet gasket
Wiggins-style clamp
3" 90-degree inlet feed bend (includes sensor port)
Optional idle control motor (selectable at checkout; not needed with DBW option)
 
Drive-By-Wire (DBW) Option:
Available with  additional machining to suit the Bosch 82mm DBW throttle body instead of the 80mm throttle body (Includes modified SCR top hat and upper inlet gasket only)
Bosch 82mm DBW throttle body can be purchased  separately at extra cost
 
Note:
Lower manifold shown in photos is not included
Not compatible with Mazda FD REW manifolds or factory FD/FC throttle bodies
Transform your FC’s performance and build quality with this meticulously designed kit—perfect for rotary enthusiasts chasing power and practicality in their custom projects.
 
WILL NOT FIT A FIT MAZDA FD REW MANIFOLD OR FACTORY FD or FC THROTTLE BODY