STI Performance Wheels: Part Numbers, Sizes & Fitment Guide

STI Performance Wheels: Part Numbers, Sizes & Fitment Guide

STI Performance Wheels: genuine Subaru-tuned rollers, sorted by part number

If you've ever tried to buy STI wheels by part number, you know the pain. ST28100-this, ST28119-that, three colours each, and a different list for every chassis. So we've done the sorting for you. Every spec below comes straight from STI's own parts catalogue (sti.jp, Japanese and English), and every wheel listed is up on our store now.

STI Performance Wheel ST28100VV421 18x8.5J +53 5x114.3 in Diamond Black, RAYS forged, for Subaru WRX S4

Why STI wheels and not just "a forged wheel"

STI (Subaru Tecnica International) is Subaru's own performance arm. These aren't generic fitments with a pink badge on the cap. The forged ones are co-developed with RAYS or BBS, and STI says they get stiffness tuning matched to Subaru's chassis.

  • RAYS forged (18"): STI's wording is that the stiffness tuning is applied to the wheel disk, the spokes and the rim, and that the billet forging gives "strength without increasing weight".
  • BBS forged (18" and 19"): developed with BBS, which STI calls a partner brand of the Nürburgring 24-Hour Race. On the 19" WRX set, STI describes billet heated to about 450°C and pressed at no less than 4 tons per square centimetre.
  • Spun cast (17", 18", 19"): a cast wheel whose rim is formed by a spinning process. STI says this gives lower weight with more rigidity. The older GR/GV-era cast sets are made by ENKEI.

The full line-up, by part number

Sizes, offsets, PCD and construction are from STI's catalogue. Weights are STI's "approximately" figures where STI gives one. "Listed for" is the chassis pages STI shows each wheel on. Prices are RZ Crew's, in SGD, per wheel.

Part # (colour) Size / PCD Build Listed for (sti.jp) From (per wheel)
ST28100VV421 Diamond Black
ST28100VV431 Gunmetallic
18x8.5J +53
5x114.3
RAYS forged, approx. 8.9 kg WRX S4 (VB, VA), WRX STI (VA), WRX STI (GR/GV) S$941.10
ST28100VV401 Diamond Black
ST28100VV411 Gunmetallic
18x8.0J +53
5x114.3
RAYS forged, approx. 8.7 kg Levorg (VN, VM), WRX S4 (VA) S$924.20
ST28100VV471 Matte Gun Black 18x8.0J +53
5x114.3
RAYS forged, approx. 8.7 kg Levorg (VN, VM), WRX S4 (VA) S$924.20
ST28100ZR550 Diamond Silver
ST28100ZR560 Black
ST28100ZR570 Dark Silver
19x8.5J +53
5x114.3
BBS forged, approx. 11 kg; clears Brembo 4POT/6POT WRX S4 (VB, VA), WRX STI (VA), WRX STI (GR/GV) S$1,320.20
ST28111V2000 Dark Silver
ST28111V2010 Black
ST28111V2020 Matte Grey
19x8.0J +53
5x114.3
BBS forged Levorg (VN, VM) S$1,273.10
ST28100VV300 Silver
ST28100VV310 Gunmetallic
ST28100VV330 Black
19x8.0J +53
5x114.3
Spun cast, V-spoke; clears Brembo 4POT Levorg (VN, VM), WRX S4 (VA) S$509.20
ST28119S2000 Matte Gun Black
ST28119S2010 Matte Bronze
18x7.5J +46
5x114.3
RAYS forged, approx. 9.0 kg Forester (SL, SK) S$924.20
ST28119S2050 Matte Gun Black
ST28119S2060 Matte Bronze
18x7.5J +53
5x114.3
RAYS forged, approx. 9.0 kg Crosstrek (GU), Levorg Layback (VN), Outback (BT) S$924.20
ST28100ZM000 Matte Grey
ST28100ZM010 Matte Bronze
18x7.5J +45
5x100
BBS forged one-piece, Super GT design BRZ (ZD, ZC) S$1,112.80
ST28100MF250 Silver
ST28100MF260 Gunmetallic
ST28100MF280 Black
18x7.5J +48
5x100
Spun cast, 15 straight spokes; clears Brembo 4POT BRZ (ZD, ZC), Forester (SJ) S$414.90
ST28100MF050 PT Silver
ST28100MF060 Gunmetallic
ST28100MF080 Black
17x7.5J +48
5x100
Spun cast, 15 straight spokes; clears Brembo 4POT BRZ (ZD, ZC), Forester (SJ, SH) S$386.60
ST281004S100 Bright Silver
ST281004S170 Silver
18x8.5J +53
5x114.3
BBS forged; clears Brembo 6POT WRX STI (GR/GV) S$1,065.60
ST281004S180 White 18x8.5J +53
5x114.3
ENKEI cast one-piece, 12 spokes, spun; clears Brembo 6POT WRX STI (GR/GV) S$414.90
ST28100ZR460 Gunmetallic 18x8.5J +53
5x114.3
ENKEI cast, spun rim; clears Brembo 6POT WRX STI (GR/GV) S$414.90

STI notes that part numbers differ by country, and asks buyers to confirm compatibility with a Subaru dealer or distributor. We'll check fitment for your exact car before you order.

WRX S4 & WRX STI (VA/VB): RAYS 18" or BBS 19"?

Want to stay at 18"? The RAYS-forged ST28100VV421/431 is 8.5J +53 at about 8.9 kg. STI recommends 245/40R18 rubber and includes a centre cap and valve. One catch, straight from STI: it can't go on cars fitted with the STI 6POT brake kit (26100ZR000), or on the special-spec R205, S206, WRX STI tS type RA and S207.

Running big brakes? The BBS 19" ST28100ZR5xx is the one. STI lists it as compatible with Brembo 4POT and 6POT calipers, at about 11 kg per wheel. Tyres aren't included.

More on the car itself: Subaru Japan's WRX S4 page.

GR/GV WRX STI: the BBS 18s, still around

Got a GR hatch or GV sedan WRX STI? STI still lists the ST281004S100 (Bright Silver) and ST281004S170 (Silver) for these cars. They're BBS-made forged wheels, 18x8.5J +53, which STI says cut unsprung weight and clear the Brembo 6POT. On a budget, there are two ENKEI-made cast 18s in the same size: the 12-spoke ST281004S180 in white, and the ST28100ZR460 in gunmetallic. Both have spun rims and clear the 6POT. STI also lists the VV421 RAYS 18" and ZR5xx BBS 19" for the GR/GV.

Levorg: three ways to do 19"

Levorg owners get the most choice:

  • ST28111V2xxx: 19x8.0J BBS forged. STI says the rim shape is optimised "with millimeter-level precision" to control tyre deformation.
  • ST28100VV3xx: the V-spoke spun-cast 19", the value pick.
  • RAYS 18": the 8.0J VV401/411 or Matte Gun Black VV471, if you'd rather keep more sidewall.

See the Levorg on Subaru Japan's Levorg page.

BRZ: the Super GT wheel

This is the one we'd pick for a BRZ. STI says the ST28100ZM000/010 (18x7.5J +45, 5x100) carries over the design of the wheel used in actual Super GT races. It's a forged one-piece BBS with anti-slip paint to curb wheelspin, plus steel bushes. Prefer something easier on the wallet? The spun-cast MF series comes in 17" and 18", three colours each, from S$386.60 a wheel.

See the BRZ on Subaru Japan's BRZ page.

Forester, Crosstrek, Layback & Outback: RAYS forged in gun black or bronze

For the SK and SL Forester there's ST28119S2000 (Matte Gun Black) and ST28119S2010 (Matte Bronze), 18x7.5J +46. Crosstrek (GU), Levorg Layback (VN) and Outback (BT) owners get the same RAYS-forged design at +53: ST28119S2050 and ST28119S2060. They're all about 9.0 kg a wheel. STI's note: if your car came on 17" or 19" from the factory, you'll need a set of 18" tyres too.

See the Forester on Subaru Japan's Forester page.

How they're sold

All STI wheels on RZ Crew are sold per piece, so the prices above are for one wheel. They ship from our Japan warehouse by DHL. Browse the full range in our STI collection.

Contact us — email sales@rzcrewgarage.com

Tell us your Subaru, its chassis code and brake setup, and we'll match the right STI part number.