SSR GTX01 vs GTX04: Design, Sizes & 5x100/5x114.3 Fitment
SSR GTX01 and GTX04 are two genuine Japanese performance wheels in the SSR GT range. Both are one-piece, flow-formed designs, but their spoke profiles and available faces are different. This buyer's guide compares the actual wheel specifications offered by HausofWheels, explains why wheel width and offset matter, and helps you choose a listing without assuming that a matching PCD guarantees fitment.
Quick answer: Choose the GTX01 if you prefer its motorsport-style ten-spoke design. Consider the GTX04 if you prefer its more aggressively weight-optimised spoke and centre design. For either model, brake clearance, face shape and actual vehicle fitment depend on the exact diameter, width, offset and PCD—not only the model name.
SSR GTX01 vs GTX04: what is different?
| Feature | SSR GTX01 | SSR GTX04 |
|---|---|---|
| Construction | One-piece, FFT-R flow-formed design | One-piece, FFT-R flow-formed design |
| Design emphasis | Ten-spoke racing-inspired layout with a distinct centre dimple | Material reduction through spoke, centre and rim shaping |
| Face profiles | Multiple faces across the size range | SMI, CV and SC face options across the range |
| Choice depends on | Exact wheel size, offset, PCD, brake package, tyre clearance and preferred styling | |
Both models use SSR's flow-forming approach, but flow forming is not the same as a fully forged monoblock wheel. SSR describes the GTX01's ten-spoke design as informed by racing development, while the GTX04 emphasises reducing material in specific wheel areas. Do not use a generic model weight claim when comparing different sizes.
Real examples from the HausofWheels catalogue
These are distinct configurations, not interchangeable fitment recommendations. Stock and pricing can change; use each product page for the current position:
- SSR GTX01 Dark Silver, 5x100, 18x9.5 +40: view the exact listing.
- SSR GTX01 Flat Black, 5x100, 18x9.5 +40: view the exact listing.
- SSR GTX04 Dark Gunmetal, 5x100, 17x9 +38: view the exact listing.
- SSR GTX04 Dark Gunmetal, 5x114.3, 18x9.5 +40: view the exact listing.
Compare the wider SSR GTX01 collection with the SSR GTX04 collection, or view genuine wheels listed as Sydney Stock. 'Available to Order' and Sydney Stock are different statuses, and a zero-quantity listing should not be treated as physically ready for pickup.
5x100: which size should a GR86, BRZ or WRX owner consider?
The 5x100 bolt pattern is common across Toyota 86 / GR86, Subaru BRZ and certain Subaru WRX generations. It does not mean a GTX01 or GTX04 fits all those cars. An 18x9.5 +40 GTX01 differs significantly from a 17x9 +38 GTX04 in both diameter and width. Even where the offset values look close, those are not like-for-like wheel positions.
Before comparing options, check the specific chassis, wheel diameter, brake package (including Brembo or aftermarket callipers), suspension height, alignment, tyre dimensions and guard clearance. GR86/BRZ owners can start with our GR86 and BRZ guide and Brembo clearance guide. WRX owners should check whether their vehicle actually uses 5x100 or 5x114.3.
5x114.3: why caliper clearance remains the deciding check
Selected WRX/STI, Lancer Evolution, Nissan Silvia and other performance vehicles use 5x114.3. However, a matching five-stud pattern alone never certifies fitment. Wheel barrel diameter, spoke profile and the distance between spoke back and brake caliper all matter. The GTX04 18x9.5 +40 5x114.3 listing is one example to evaluate against the exact car and brake setup—not an automatic approval for every 5x114.3 model.
See our wheel and brake-clearance guide before committing to a set. When comparing similar advertised sizes, also check the exact face variant and hub/centre-bore requirements.
GTX01 and GTX04: five checks before you buy
- Confirm the bolt pattern: Check 5x100, 5x114.3 or your vehicle's actual PCD. Do not choose on appearance alone.
- Compare both width and offset: For example, 17x9 +38 and 18x9.5 +40 are not equivalent positions even though the offset numbers are similar.
- Check the brakes: Standard, upgraded and six-pot calipers can require different spoke and barrel clearance.
- Check the hub, wheel nuts and accessories: Verify centre bore, any required hub-centric rings and the correct nut seat/thread for the wheel and vehicle. Centre caps may be optional.
- Verify the listing's status: Sydney Stock, enquiry and pre-order listings have different availability implications. Confirm pickup or freight before purchase.
Frequently asked questions
Is SSR GTX04 always lighter than GTX01?
Do not assume that from the names alone. SSR describes weight reduction as a GTX04 design focus, but a trustworthy comparison needs manufacturer weight data for the same diameter, width, offset and PCD.
Does 18x9.5 +40 guarantee clearance on a WRX or Evo?
No. Matching the size and PCD does not verify spoke-to-caliper clearance, strut clearance or tyre-to-guard clearance. Brake and suspension variants can change the outcome.
Are either of these SSR wheels forged?
These GTX01 and GTX04 models use SSR's FFT-R flow-forming manufacturing method; they should not be advertised as fully forged monoblock wheels.
Can HausofWheels fit or test-fit the wheels?
No. We supply genuine wheels only. Sydney pickup is by confirmed appointment in Hurstville; Australia-wide shipping is available. Provide your exact vehicle and brake details if you need help narrowing the options.
Compare genuine SSR wheels
Browse GTX01 wheels, GTX04 wheels, all 5x100 wheels or all 5x114.3 wheels. For an uncertain fitment, use the HausofWheels Fitment Finder or contact us with your year, model, trim, brake package, suspension, wheel size and tyre plan.
Manufacturer references: SSR GTX01 product specifications and features and SSR GTX04 product specifications and features. Individual part numbers and availability should be checked against current manufacturer information.
Considering another SSR GT design?
The SSR GTX05 DR Edition collection adds a different design with 5x100, 5x112 and 5x114.3 PCD options to compare. The exact offset and face profile can vary by bolt pattern; do not assume a GTX05, GTX04 or GTX01 with a similar diameter clears the same brakes. Match the manufacturer's correct specification and confirm availability before ordering.