Best Toyota GR Supra Mods & Upgrades: 2020-2025 A90

The 2020–2025 Toyota GR Supra (A90) is one of the most rewarding modern sports cars to build, and the right Toyota GR Supra mods can transform its BMW-sourced B58 3.0L turbo inline-six from a strong 382-horsepower cruiser into a genuine track weapon. In our Tampa, FL shop we have helped hundreds of A90 owners spec suspension, exhaust, intake, and cooling upgrades that actually work together instead of fighting each other. This roundup covers the best GR Supra upgrades we stock — from the flagship KW Clubsport coilover kit to bolt-on cat-backs, a dyno-proven cold-air intake, and dry carbon aero — with real specs, prices, and verified fitment.

Why the GR Supra A90 Is a Dream Mod Platform

The A90 Supra is easy to modify because its engine is famously overbuilt. Every 3.0L GR Supra uses the BMW B58 single-turbo inline-six: 2020 cars make 335 hp and 365 lb-ft, while 2021–2025 cars make 382 hp and 368 lb-ft after Toyota fitted new pistons (dropping compression from 11:1 to 10.2:1) and a six-port exhaust manifold. Power runs through a ZF 8-speed automatic to the rear wheels, and at roughly 3,400 lbs the Supra hits 0–60 mph in about 3.9 seconds bone stock.

The closed-deck iron block routinely supports 500–600 wheel horsepower on the factory long block with supporting fuel and cooling mods, which is why the aftermarket exploded around this car. Because the A90 shares its platform with the BMW Z4 (G29), many of the best parts — including the KW coilover kits and the Mishimoto heat exchanger below — cross-fit both cars, giving Supra owners an unusually deep catalog to shop from.

This guide focuses on the 3.0L six-cylinder GR Supra, which is the car most owners modify. The four-cylinder 2.0L B48 (255 hp) shares the chassis but uses different exhaust and intake hardware, so confirm your engine before ordering. Note too that 2023–2025 3.0L cars added an available six-speed manual gearbox, while every year keeps the same B58 short block — so the suspension, cooling, and aero parts in this roundup fit manual and automatic A90 Supras alike.

Best Suspension Upgrade: KW Clubsport Coilover Kit

The KW Clubsport kit is the best all-round suspension upgrade for the A90 Supra, pairing a 20–35mm front and 20–40mm rear drop with motorsport-grade, independently adjustable damping that works on both the street and the track. It uses the same hardware KW develops in professional racing series, with a stainless steel strut body and separate compression and rebound tuning so you can dial in the exact ride you want.

If you want KW quality with a bit more daily comfort and factory adaptive-damper compatibility, the KW Coilover Kit V3 ($3,784.00) includes an electronic damper cancellation kit so the OEM warning stays off. It offers the same inox-line build with independent compression and rebound adjustment, making it our value pick for street-driven A90s that still see occasional track days.

Best Exhaust Upgrades for the GR Supra

For the biggest bark with zero cabin drone, the AWE Track Edition and Borla ATAK cat-backs are the top A90 exhaust picks, while the HKS Super Turbo Muffler is the premium single-exit choice. All three unlock the B58's straight-six growl that Toyota muffled from the factory, and each bolts on with hand tools in about two hours.

The AWE Track Edition is the choice for owners who like it raw. It swaps AWE's 180 Technology drone-cancelling helmholtz chambers for straight-through bullet resonators, so it gets loud and rowdy under mid-range acceleration while shedding roughly 11 lbs versus the factory system. If you want that AWE fit and finish but a slightly calmer commute, the Touring Edition keeps the drone-cancel hardware.

Borla's ATAK (Acoustically Tuned Applied Kinetics) is the brand's most aggressive tune, built from mandrel-bent T-304 stainless with carbon fiber tips. A90 owners consistently report it is louder than stock on cold start with no highway drone, backed by Borla's Million-Mile warranty. It undercuts the AWE Track Edition on price while delivering a similarly rowdy character.

For the JDM purist, the HKS Super Turbo Muffler delivers the iconic single-exit HKS look and tuner note that defined the previous-generation Supra scene. It is the premium exhaust option here at $3,750.00, and it pairs perfectly with a Supra built to lean into its Japanese heritage rather than the dual-exit OEM styling.

Best Cold Air Intake: Injen SP

The Injen SP cold-air intake adds a dyno-proven 15 hp and 17 lb-ft to the A90 Supra with no tune required, making it the best bang-for-buck power mod on this list. It is a genuine bolt-on: the kit drops in with basic hand tools, feeds the B58 through a smooth 6061-T6 aluminum tube, and filters with Injen's serviceable SuperNano-Web dry element for more surface area and airflow.

Prefer to keep the factory airbox for cold-start reliability and a stealth look? The AWE S-FLO Carbon Intake Lid ($485.00) is a sealed carbon-fiber airbox lid that improves airflow while retaining the OEM filter housing — a popular choice for owners who want the underhood carbon look without an exposed cone filter.

Best Cooling Upgrades for a Modified B58

Track-driven and boosted B58 Supras run hot, so a Mishimoto performance aluminum radiator and heat exchanger are the essential cooling upgrades to add before you chase big power. The B58's air-to-water intercooler system relies on coolant temperature, so upgrading heat rejection directly protects your power on repeated pulls and hot laps.

Pair the radiator with the Mishimoto Performance Heat Exchanger ($749.95) to lower charge-air temps on the B58's water-to-air system. Like the KW kits, this heat exchanger cross-fits the BMW Z4 G29, and it is a favorite on tuned A90s that see summer track duty in Florida heat.

Best Carbon Fiber and Aero Upgrades

Seibon's dry carbon rear diffuser and MB-style spoiler are the most popular A90 aero upgrades, cutting weight while sharpening the Supra's rear-end styling. Seibon dry carbon is a matte-finish, autoclave-cured product that shaves grams over the OEM plastic pieces and gives the A90 the purposeful stance most owners are after.

GR Supra Upgrades Compared: Top Pick by Category

Here is how our top A90 Supra upgrade in each category stacks up on the spec that matters most and on price. Every part below is in stock with verified fitment for the 2020–2025 GR Supra.

If you are building in stages, we recommend this order at our Tampa shop: start with the Injen SP intake and a cat-back exhaust for the biggest sound-and-feel change per dollar, add the KW Clubsport coilover kit once you want real handling gains, then fit the Mishimoto radiator and heat exchanger before any tune or big-boost setup so charge-air temperatures stay in check. Carbon aero like the Seibon diffuser is the finishing touch. Sequencing the build this way keeps each upgrade useful on its own and avoids buying cooling you do not need until the power climbs.