// 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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Haltech 250 PSI TI Fuel/Oil/Wastegate Pressure Sensor
Regular price $205.99Regular priceSale price $205.99 -
Haltech Bosch 145 PSI Fuel/Oil Pressure & Temperature Sensor
Regular price $175.99Regular priceSale price $175.99 -
Haltech 1/4in Open Tip Thermocouple 51in Long (No Fitting Hardware)
Regular price $99.99Regular priceSale price $99.99 -
Haltech 1/4in Open Tip Thermocouple 37-1/2in Long (No Fitting Hardware)
Regular price $99.99Regular priceSale price $99.99 -
Haltech 1/4in Open Tip Thermocouple 33in Long (No Fitting Hardware)
Regular price $99.99Regular priceSale price $99.99 -
Haltech 1/4in Open Tip Thermocouple 87in Long (No Fitting Hardware)
Regular price $99.99Regular priceSale price $99.99 -
Haltech LSU4.9 Wideband Hardware Pack
Regular price $199.99Regular priceSale price $199.99Sold out -
Haltech 1/4in Stainless Compression 1/8in NPT Thread Fitting Kit w/Nut & Ferrule
Regular price $21.99Regular price$21.00Sale price $21.99 -
Haltech 1/4in Stainless Steel Weld-On Kit w/Nut & Ferrule
Regular price $21.99Regular price$21.00Sale price $21.99 -
Sold outHaltech NTK Wideband Hardware Pack
Regular price $230.99Regular price$215.00Sale price $230.99Sold out -
Haltech LSU4.9 Wideband Adaptor Harness LSU4.9 to DTM6
Regular price $33.99Regular priceSale price $33.99 -
Haltech Onboard Wideband Sensor Pack for Elite PRO Plug-in ECUs
Regular price $199.99Regular priceSale price $199.99 -
Haltech Wideband O2 Sensor (NTK LZA08-H5)
Regular price $199.99Regular price$180.00Sale price $199.99 -
Haltech Wideband O2 Sensor (Bosch LSU 4.2)
Regular price $160.99Regular priceSale price $160.99 -
Haltech O2 Sensor Weld-On Bung w/Copper Washer & Blanking Plug M18 x1.5
Regular price $17.99Regular price$16.00Sale price $17.99 -
Haltech Oil Temperature Sensor High Range 150 Deg C 1/8 NPT Thread w/Bosch EV1 Plug & Pins
Regular price $95.99Regular price$88.00Sale price $95.99Sold out -
Haltech GT101 Style High Frequency Hall Effect Sensor
Regular price $95.99Regular priceSale price $95.99 -
Haltech Throttle Position Sensor (Motorsport Contactless/8mm D-Shaft/CW & CCW Rotation)
Regular price $205.99Regular priceSale price $205.99 -
Haltech Throttle Position Sensor (Grey/8mm D-Shaft/CW & CCW Rotation)
Regular price $175.99Regular price$160.00Sale price $175.99 -
Haltech 12 Position Rotary Trim Module
Regular price $90.99Regular priceSale price $90.99 -
Haltech Air Temp Sensor 1/8 NPT Thread
Regular price $56.99Regular priceSale price $56.99Sold out -
Haltech Coolant Temp Sensor 1/8 NPT Thread
Regular price $56.99Regular priceSale price $56.99 -
Haltech Coolant Temp Sensor M12 x 1.5 (Incl Delphi Plug & Pins)
Regular price $56.99Regular priceSale price $56.99 -
Haltech 5 Bar Motorsport Stainless Steel Diaphragm MAP Sensor 1/8 NPT w/Plug & Pins
Regular price $265.99Regular priceSale price $265.99
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?