// FD3S · 13B-REW · RX-7 SPIRIT R
Mazda
RX-7 FD
Forged, track-proven performance parts engineered for the FD3S RX-7 and the legendary 13B-REW rotary. Twin-turbo response, rethought down to the apex seal.
// BUILD YOUR RX-7
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Mazda RX-7 Brakes
The lightweight RX-7 is all about balance and braking feel. Shop performance...
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Mazda RX-7 Cooling
Rotaries live and die by heat management — and the 13B-REW is...
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Mazda RX-7 Drivetrain
Get rotary power to the ground reliably. Shop clutches, differentials, axles, and...
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Mazda RX-7 Electronics
The 13B-REW responds beautifully to proper engine management. Shop standalone ECUs, gauges,...
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Mazda RX-7 Engine Parts
Build your 13B-REW right — and shop the only authorized US source...
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Mazda RX-7 Exterior
The FD RX-7's curves are some of the most beautiful ever drawn....
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Mazda RX-7 Fuel
Rotaries are thirsty, and a high-output 13B-REW needs serious fueling. Shop high-flow...
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Mazda RX-7 Intake & Exhaust
Let the 13B-REW breathe and sing. Shop intakes, exhaust manifolds, downpipes, and...
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Mazda RX-7 Interior
Restore or upgrade the RX-7's driver-focused cabin. Shop gauges, gauge pods, shift...
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Mazda RX-7 Suspension & Steering
The RX-7's near-perfect balance deserves dialed suspension. Shop coilovers, sway bars, control...
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Mazda RX-7 Forced Induction
Boosted rotary power is a thing of beauty — and this is...
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Mazda RX-7 Ignition
Strong spark is everything on a rotary. Shop ignition coils, leading and...
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GReddy Sirius Unify Turbo Boost Gauge Set (Sirius Meter w/Boost Pressure Sensor Set & Vision Displ)
Regular price $850.99Regular price$895.16Sale price $850.99Sale -

GReddy Sirius Meter - Oil Pressure 0/10.0kPa 74mm Analog Gauge (w/Oil Press Sensor & Harness Set)
Regular price $373.99Regular price$393.15Sale price $373.99Sale -

GReddy Sirius Meter - Oil Temp 20/140 (Deg.C) 74mm Analog Gauge (w/Oil Temp Sensor & Harness Set)
Regular price $275.99Regular price$290.32Sale price $275.99Sale -

GReddy Sirius Meter - Fuel Pressure 0/6.0kPa 74mm Analog Gauge (w/Fuel Press Sensor & Harness Set)
Regular price $373.99Regular price$393.15Sale price $373.99Sale -

GReddy Sirius Unify Water Temperature Gauge Set (Sirius Meter w/Water Temp Sensor Set & Vision Disp)
Regular price $769.99Regular price$810.48Sale price $769.99Sale -

GReddy Sirius Unify Oil Temperature Gauge Set (Sirius Meter w/Oil Temp Sensor Set & Vision Disp)
Regular price $769.99Regular price$810.48Sale price $769.99Sale -

GReddy Sirius Unify Fuel Pressure Gauge Set (Sirius Meter w/Fuel Press Sensor Set & Vision Disp)
Regular price $850.99Regular price$895.16Sale price $850.99Sale -
GReddy Sirius Unify Oil Pressure Gauge Set (Sirius Meter w/Oil Press Sensor Set & Vision Disp)
Regular price $850.99Regular price$895.16Sale price $850.99Sale -
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GReddy Sirius OBD Set (Turbo Meter)
Regular price $528.99Regular price$556.45Sale price $528.99Sale -
GReddy Sirius OBD Set (Turbo Unify) - 74mm
Regular price $1,091.99Regular price$1,149.19Sale price $1,091.99Sale -
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GReddy Sirius OBD Set (Water Unify) - 74mm
Regular price $1,045.99Regular price$1,100.81Sale price $1,045.99Sale -
GReddy Sirius OBD Set (Water Temperature Meter) - 74mm
Regular price $517.99Regular price$544.35Sale price $517.99Sale -
GReddy M18 Warning Oil Temp Sensor Fitting
Regular price $12.99Regular price$13.50Sale price $12.99Sale -
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GReddy A/F Gauge Sensor Harness 2.5M
Regular price $45.99Regular price$48.00Sale price $45.99Sale -
GReddy Oil Pressure Sender Electronic & Warning Gauges
Regular price $171.99Regular price$180.00Sale price $171.99Sale -
GReddy 38mm Radiator Hose Temp Sender Adapter
Regular price $57.99Regular price$60.00Sale price $57.99Sale -
GReddy Mazda Miata 4AG BP/B6 Radiator Hose 30mm Upper Water Temperature Adapter
Regular price $57.99Regular price$60.00Sale price $57.99Sale -
GReddy 32mm Radiator Hose Temp Sender Adapter
Regular price $57.99Regular price$60.00Sale price $57.99Sale -
GReddy 40mm Radiator Hose Temp Sensor / Water Pressure Adapter
Regular price $57.99Regular price$60.00Sale price $57.99Sale -
GReddy Sirius Pressure Sensor Harness Extension
Regular price $28.99Regular price$30.24Sale price $28.99Sale -
GReddy 34mm Radiator Hose Temp Sender Adapter
Regular price $57.99Regular price$60.00Sale price $57.99Sale
About the Mazda RX-7 Collection
J-Spec Garage is your home for Mazda RX-7 performance parts — and the only authorized US distributor of RaceOnly rotary engine components. No other US retailer carries RaceOnly. That exclusivity, combined with one of the deepest FD and FC RX-7 catalogs in the country, makes J-Spec the go-to source for serious rotary builds.
Our Mazda RX-7 collection covers over 2,100 products for the FD3S RX-7 (1992–2002, 13B-REW twin-turbo) and the FC3S RX-7 (1986–1991, 13B-T turbocharged). You'll find everything from apex seals, e-shaft components, and rotor housings to turbochargers, fuel system upgrades, standalone engine management, suspension, brakes, cooling, and interior — for every stage of build from a daily street rebuild to a high-horsepower track setup.
Key categories include RaceOnly billet CNC rotary parts, 13B-REW rebuild components, single turbo conversion kits, sequential twin-turbo upgrades, fuel rails and injectors, standalone ECUs, coilovers, and big brake kits. Brands stocked include RaceOnly, HKS, GReddy, Injector Dynamics, Haltech, ECUMaster, Turbosmart, Garrett, Brian Crower, DBA Brakes, and Chase Bays, among many more.
The FD RX-7 is one of the most rewarding — and most demanding — platforms to build. Get it right with parts you can trust, backed by our price match guarantee and fast US shipping.
Shop 2,100+ Mazda RX-7 parts below.
Building a 13B-REW? Read the FD RX7 13B-REW Engine Parts Guide — foundation to fuel system, with RaceOnly billet upgrades called out throughout. New to the rotary platform? Start with What Is the 13B-REW?


















