Custom forged wheels Singapore
LFI plans each REX-03M set from Singapore around the car's brake package, tyre target, ride height, offset window, load target, centre bore, TPMS transfer and finish direction.
LFI REX-03M Founder's Edition Magnesium Forged Wheel
$1,179.00
Price per Wheel
MaterialAZ80A-T6 magnesium
Sizing18-21 inch
Width7.5J to 13J
OffsetDesign dependent
Load targetUp to 890 kg
Forging15,000-ton forged
Founder's Edition / Magnesium Forged
LFI REX-03MMagnesium Forged Wheel
The REX-03 wide-spoke architecture in a lighter material. Deeper concavity potential than the aluminium version, same per-vehicle fitment, higher price, more care required.
Starting from USD 980 per wheel
- AZ80A-T6 forged magnesium
- 16 to 21 inch applications
- Brake clearance planned per car
- Width, offset, centre bore and finish built to order
WhyMagnesium
REX-03M takes the REX-03 spoke architecture and forges it in magnesium. Approximately 25% less mass than the aluminium equivalent at the same specification - for drivers who want the last increment of unsprung mass reduction and accept the material trade-offs.
Magnesium forged wheels are not for every build. They are lighter than aluminium - approximately 20-30% less mass at equivalent specification - but they demand a different ownership conversation.
Magnesium is more susceptible to corrosion than aluminium. The protective coating is critical. Stone chips, kerb damage and harsh cleaning chemicals can compromise the surface and expose the substrate. Road salt accelerates the process.
Magnesium wheels are also more expensive to produce and insure. The forging process is more demanding. Repair is more limited. Most wheel repair shops will not touch a magnesium wheel.
For the right owner - a driver who wants the lightest possible forged wheel, keeps the car clean, inspects the wheels regularly and understands the material - REX-03M is the answer. For a daily driver parked outdoors, the aluminium REX-03 is usually the better long-term choice.
Engineering note
ρmagnesium ≈ 1,740–1,830 kg/m³
ρaluminium 6061-T6 ≈ 2,700 kg/m³
Mass reduction ≈ 25–35% at equivalent geometry, before machining differences.
ρaluminium 6061-T6 ≈ 2,700 kg/m³
Mass reduction ≈ 25–35% at equivalent geometry, before machining differences.
Density comparison. Final mass also depends on width, offset, brake clearance and load target.
AZ80A-T6magnesium alloy monobloc
15,000thigh-pressure forged construction
890 kgload rating target
From USD 1240starting price
REX-03MDesign Direction
The REX-03 wide-spoke architecture in a lighter material. Deeper concavity potential than the aluminium version, same per-vehicle fitment, higher price, more care required.
wide-spoke magnesium architecture
The face profile, brake clearance and machining depth are specified to the platform and load target.
Fitment locked before machining
Every magnesium wheel is specified to the car's load target, brake package and tyre size. The material changes the mass; the fitment process does not change.
REX-03MBest Fit
Best for grand tourers, luxury sedans, clean coupes, and owners who want magnesium performance with a more elegant look.
01
Lower unsprung mass.
Lower wheel mass can improve steering response, braking feel, acceleration, and suspension control.
02
Performance-specific material.
AZ80A-T6 magnesium is used where the build priority is weight reduction with real structural review.
03
Custom fitment.
Width, offset, bolt pattern, center bore, brake clearance, and finish are confirmed before production.
ApproximateREX-03M Weights
Approximate weights. Final mass confirmed per vehicle specification.
| 18 inch | Weight | 19 inch | Weight | 20 inch | Weight | 21 inch | Weight |
|---|---|---|---|---|---|---|---|
| 20x8J | 6.13 kg / 13.5 lb | 21x8J | 7.03 kg / 15.5 lb | ||||
| 19x8J | 5.23 kg / 11.5 lb | 20x8.5J | 6.35 kg / 14 lb | 21x8.5J | 7.25 kg / 16 lb | ||
| 18x8J | 4.33 kg / 9.5 lb | 19x8.5J | 5.45 kg / 12 lb | 20x9J | 6.58 kg / 14.5 lb | 21x9J | 7.48 kg / 16.5 lb |
| 18x8.5J | 4.55 kg / 10 lb | 19x9J | 5.68 kg / 12.5 lb | 20x9.5J | 6.8 kg / 15 lb | 21x9.5J | 7.7 kg / 17 lb |
| 18x9J | 4.78 kg / 10.5 lb | 19x9.5J | 5.9 kg / 13 lb | 20x10J | 7.02 kg / 15.5 lb | 21x10J | 7.92 kg / 17.5 lb |
| 18x9.5J | 5 kg / 11 lb | 19x10J | 6.12 kg / 13.5 lb | 20x10.5J | 7.25 kg / 16 lb | 21x10.5J | 8.15 kg / 18 lb |
| 18x10J | 5.22 kg / 11.5 lb | 19x10.5J | 6.35 kg / 14 lb | 20x11J | 7.47 kg / 16.5 lb | 21x11J | 8.37 kg / 18.5 lb |
| 18x10.5J | 5.45 kg / 12 lb | 19x11J | 6.57 kg / 14.5 lb | 20x11.5J | 7.7 kg / 17 lb | 21x11.5J | 8.6 kg / 19 lb |
| 18x11J | 5.67 kg / 12.5 lb | 19x11.5J | 6.8 kg / 15 lb | 20x12J | 7.93 kg / 17.5 lb | 21x12J | 8.83 kg / 19.5 lb |
| 18x11.5J | 5.9 kg / 13 lb | 19x12J | 7.03 kg / 15.5 lb | 20x12.5J | 8.15 kg / 18 lb | 21x12.5J | 9.05 kg / 20 lb |
| 18x12J | 6.13 kg / 13.5 lb | 19x12.5J | 7.25 kg / 16 lb | 20x13J | 8.38 kg / 18.5 lb | 21x13J | 9.28 kg / 20.4 lb |
| 18x12.5J | 6.35 kg / 14 lb | 19x13J | 7.47 kg / 16.5 lb | ||||
| 18x13J | 6.57 kg / 14.5 lb |
REX-03MBuild Data
| Specification | REX-03M value | Fitment note |
|---|---|---|
| Model | LFI REX-03M Magnesium Forged Wheel | Founder's Edition Magnesium AZ80A-T6 monoblock forged magnesium wheel. |
| Construction | Monoblock forged magnesium wheel | One-piece forged layout for low mass, direct response and clean load transfer. |
| Material | AZ80A-T6 forged magnesium | Material and final machining depth are reviewed against size, offset and load target. |
| Forging | Monoblock forged wheel blank | Vehicle-specific machining confirms final width, PCD, centre bore, offset and brake clearance. |
| Design | wide-spoke magnesium architecture | The face profile, brake clearance and machining depth are specified to the platform and load target. |
| Diameter range | 16 to 21 inch | Diameter is selected around brake package, tyre package, vehicle use and stance. |
| Width range | 5.5J to 13J | Width is matched to tyre support, fender clearance, concavity and intended use. |
| Offset range | Vehicle-specific | Offset is reviewed with brake envelope, hub position, suspension clearance and face depth. |
| Load target | Confirmed per vehicle | Load target is confirmed against vehicle mass, use case, tyre package and road or track duty. |
| Brake clearance | Built to order | Spoke profile, backpad, barrel shape and balancing-weight clearance are checked around the caliper. |
| Warranty | 2-year REX-03M structural warranty | Subject to LFI warranty terms at Warranty. |
| Starting price | USD 980 to USD 1240 per wheel | Final price confirmed after width, offset, finish and load-target specification. |
Forging Profile Option
EnhancedConcavity
LFI concave profiles are built around wheel width, offset, diameter, brake clearance, and forging depth. The goal is to push the face as deep as the car allows, without compromising fitment, caliper clearance, or structural integrity.
Three concavity levelsOffset-sensitive designCost option
Maximum Concave Face
The Maximum Concave Face option is available for selected LFI magnesium forged wheel designs. Depending on wheel width and offset, the face profile can be tuned from mild concave to a deeper spoke drop.
Wider wheels and lower offsets generally allow stronger concavity. Final availability depends on the vehicle body, suspension, brake package, and selected forging blank.
Three Concavity Levels
Concavity is not selected by diameter alone. The final face depth is calculated from the full fitment package.
The exact concavity level is confirmed during fitment planning.
Anti-Slip Knurled Beads
Knurled bead seats can help reduce tire movement during hard acceleration, braking, cornering, drag launches, and sticky tire use.
Annular Reinforcement Ribs
Reinforcement ribs can improve stiffness, stress distribution, and durability where the vehicle load, tire package, or road conditions call for extra reserve.
Fitment PlanningFor Your Build
USA and international orders
US and international customers can order in English through WhatsApp or email. Send vehicle photos, brake details, current wheel and tyre sizes, ride height, fitment goals, intended use and delivery ZIP/postcode. LFI confirms the REX-03M specification remotely, supports DDP shipping where available, and coordinates production updates before dispatch.
Where REX-03MMakes Sense
European performance
Porsche 911, Cayman / Boxster, BMW M3/M4, BMW M2, Audi RS5, Mercedes-AMG GT. Founder's Edition wheels suit the platforms where the wheel is a major visual statement.
Japanese performance
GR Supra, Civic Type R, Lexus IS, GR86. Aggressive offsets and wide tyre support with a forged wheel that reads as premium.
Supercars and exotics
Porsche 911 Turbo/GT3, Lotus. The Founder's Edition series is built for cars where the wheel is judged as closely as the car itself.
More ProofBehind The Spec
More on the engineering behind REX-03M.
Combined-load FEA
Why radial load alone is not enough for wheel design, and how braking, cornering and combined loads change the engineering picture.
Bespoke FEA reports
How LFI reviews custom forged wheel specifications with material inputs, load cases, stress maps, displacement plots and optional report documentation.
Testing & compliance
How LFI validates forged wheel designs against JWL, VIA and TUV SUD standards, with named reference tests and per-build specification review.
Forged wheel value
A buyer-facing guide to when forged wheels matter: weight, stiffness, fitment accuracy, brake clearance and long-term build quality.
2-Year StructuralWarranty
LFI REX-03M Magnesium Forged Wheel is covered for 2 years upon delivery or collection against defects in structural integrity, subject to LFI's full warranty terms and exclusions.
What it covers
The warranty covers defects in structural integrity for 2 years upon delivery or collection, subject to LFI's full warranty terms.
What to check
Coverage is limited by the full warranty terms, including exclusions for impact damage, misuse, improper tyre use, road hazards, unauthorised repair, refinishing, heating, bending, cutting or welding.
Magnesium-specific: Magnesium requires more attentive care than aluminium. Stone chips, kerb contact, harsh chemicals and road-salt exposure can compromise the protective coating. Regular inspection and prompt touch-up of surface damage are recommended. Damage from neglect, impact or improper cleaning is not covered.
Actual GoogleReview Excerpts
Brock Mitchell
★★★★★LFI built a set of forged wheels for my track car. The fitment was spot-on. Brake clearance was handled without spacers. The weight difference was immediately noticeable on turn-in.
Read on GoogleIan Tan
★★★★★Kenny walked me through the whole specification process. Every dimension was confirmed against my car before production started. Wheels arrived exactly as planned.
Read on GoogleGerald Tan
★★★★★Third set from LFI. Each time the fitment has been perfect. The engineering conversation before ordering is what sets them apart from catalogue wheel sellers.
Read on GoogleREX-03MQuestions
Is REX-03M built to order?
Yes. Every REX-03M set is forged and machined around your specific vehicle: diameter, width, offset, brake clearance, load target, bolt pattern, centre bore, concavity and finish are all confirmed before production.
How much does REX-03M weigh?
See the approximate weight table above. Final weight depends on your width, offset, bolt pattern, brake clearance, load target and finish. Verified weight is confirmed on the finished wheel.
Can REX-03M clear big brakes without spacers?
Yes, when the final specification is drawn around the actual brake package. LFI checks spoke shape, backpad, barrel clearance, balancing-weight clearance, centre profile and offset before production.
Can REX-03M be used for track or fast-road driving?
Yes. LFI reviews vehicle mass, tyre package, braking load, road surface, load rating, bead-seat needs and optional reinforcement details before confirming a fast-road or track specification.
What information does LFI need to start a REX-03M build?
Share the vehicle model, current wheel and tyre sizes, brake package, ride height, intended use, stance direction, finish direction and any load or track-use requirements.
Can I choose custom finishes?
Yes. LFI can quote gloss, satin, brushed, polished, black, silver, bronze, body-colour and selected custom finishes depending on the final specification and production route.
Does REX-03M include warranty?
Yes. REX-03M is covered for 2 years upon delivery or collection against defects in structural integrity, subject to LFI's full warranty terms and exclusions.
How does LFI support Singapore, USA and international orders?
Singapore builds can be planned directly with LFI. US and international customers can order in English through WhatsApp or email by sending vehicle photos, brake details, current wheel and tyre sizes, ride height, fitment goals, intended use and delivery ZIP/postcode.
Build REX-03M Around Your Car
Send LFI your exact model, year, brake package, current tyre size, target wheel diameter, preferred stance, use case and finish direction. LFI will confirm whether REX-03M is the right forged wheel direction before production.