RAYS VOLK RACING TE37SL Forged Wheels
RAYS VOLK RACING TE37SL — TE37 DNA Engineered for Street Survival
The RAYS VOLK RACING TE37SL answers a question that drivers have asked since the original TE37 launched: can you have the iconic six-spoke monoblock on a daily-driven car without sacrificing durability? The SL designation stands for Street Legal — an acknowledgement that the TE37SL departs from the TE37's pure race specification in specific ways that directly benefit road use. A reinforced double-flange construction, a slightly higher lip profile, and a tuned spoke radius together create a wheel that absorbs the inevitable kerb grazes, pothole impacts, and road-temperature cycling of street driving that would challenge a race-optimised wheel.
Available Sizes
- Diameters: 13" | 14" | 15" | 16" | 17" | 18" | 19" | 20" | 21" | 22" | 23" | 24"
- Available Widths: 5J to 14.5J
- Typical Offsets: ET+35 through ET+55 for most street applications
- Bolt Patterns: 4×100, 5×100, 5×114.3, 5×120, 5×112 and others on request
- Center Bore: 73.1mm standard; hub-centric rings available
The TE37SL is the most popular RAYS VOLK RACING model for high-performance road cars precisely because it bridges the gap between circuit capability and street practicality. Most TE37SL buyers run the wheel on a car that sees occasional track days but daily road use — the SL is built for exactly this dual role.
Need a Different Size?
The TE37SL catalogue covers the widest range of sizes in the VOLK RACING lineup, reflecting its broad appeal across compact sports cars, hot hatches, and mid-size performance sedans. For applications outside standard sizing — extra-wide barrels for aggressive cambered stances, unusual PCDs for European platforms, or the specific ET required for a fender-flush fitment — our concierge team sources direct from RAYS Japan. We also offer an AI Wheel Design Service if you want a custom spoke pattern or finish concept designed before committing to production.
Technical Specifications
- Construction: 1-piece forged monoblock (A6061-T6 aluminium alloy)
- Manufacturing: RAYS die forging; double-flange lip reinforcement
- Spoke Layout: 6-spoke, TE37-derived geometry with street-tuned radii
- Weight Range: 6.4 kg (17×7.5J) to 10.2 kg (18×10J)
- Surface Treatment: Alumite-base coat with polyurethane topcoat
- Available Colourways: Bronze, Satin Silver, Gloss Black, Gun Metal, Diamond Cut
- Load Rating: 600 kg per corner (reinforced for street loading cycles)
- Available Widths: 5J to 14.5J
- Certification: JWL-VIA (Japan), TÜV (Europe), ECE (European market)
Watch the RAYS VOLK RACING TE37SL in Action
Vehicle Fitment Guide
The TE37SL suits any platform where the TE37 family's aesthetic is desired but the road-use demands exceed what a pure race wheel can reliably sustain. Most popular pairings:
- Honda Civic Type R FK8/FL5: 18×9.5J ET+45 | 5×120 — the most frequently spec'd TE37SL combination
- Subaru WRX STI (VA generation): 18×10J ET+38 | 5×114.3
- Honda S2000 AP1/AP2: 17×9J ET+35 | 5×114.3 — classic daily-driven sports car fitment
- Toyota GR86 / Subaru BRZ: 17×9J ET+45 | 5×100
- Volkswagen Golf R (MK7/MK8): 18×9J ET+45 | 5×112
- Audi RS3/S3 (8V/8Y): 19×9J ET+45 | 5×112
- Mitsubishi Lancer Evolution X: 18×9.5J ET+38 | 5×114.3
Confirm calliper clearance before ordering. Our fitment team at [email protected] maintains a vehicle-specific clearance database.
Other Bolt Patterns Available
- 4×100 — Honda Jazz, Mazda2, Peugeot 206/207
- 5×100 — Subaru Impreza GC8/GD, Toyota Celica, early VW Golf
- 5×112 — Audi, VW, Mercedes-Benz platforms
- 5×114.3 — most Japanese sports and performance cars
- 5×120 — BMW 1/2/3-series, Honda Civic Type R
TE37SL Heritage: Street-Legal Evolution of a Racing Icon
When RAYS Engineering introduced the TE37SL in 2010, the original TE37 had already accumulated fourteen years of motorsport pedigree. The challenge the RAYS team faced was not designing a wheel from scratch — it was modifying one of the most celebrated wheel designs in history in ways that served the majority of buyers who drive on public roads every day, without undermining the motorsport identity that made the TE37 desirable in the first place.
The solution was surgical rather than comprehensive. RAYS' engineers identified the specific failure modes most commonly observed in street-driven TE37s: outer lip deformation from kerb impacts, fatigue cracking at spoke-barrel junctions under repeated pothole loading, and surface coating adhesion loss in climates with road salt exposure. The TE37SL addressed each systematically: a double-flange outer lip design redistributes kerb-impact energy across a wider material cross-section; additional forging thickness at spoke-barrel roots reduces fatigue stress concentrations; and an enhanced alumite pre-treatment process provides superior corrosion resistance for salt-belt markets.
The visual result is deliberately subtle. TE37SL wheels are visually distinguishable from TE37s primarily by the lip profile — the double flange is visible on close inspection — and by the slightly higher overall wheel weight that results from the additional material. RAYS made a conscious decision not to change the spoke aesthetics, preserving the design language that made the TE37 iconic while delivering meaningfully improved street durability underneath.
Double-Flange Construction Explained
The distinguishing engineering feature of the TE37SL versus its TE37 sibling is the double-flange outer lip. Where the TE37 uses a single-thickness forged lip optimised for minimum weight, the TE37SL's lip section incorporates a secondary inner flange that runs parallel to the outer edge. This secondary flange performs two functions. First, it provides structural redundancy in kerb-impact scenarios: an impact that might permanently deform a single-flange lip instead distributes its force across both flanges, reducing the likelihood of permanent deformation. Second, the double-flange acts as a stiffer structural ring around the barrel perimeter, increasing the wheel's resistance to lateral deflection under cornering loads — a benefit that contributes to steering feel consistency on road surfaces.
The weight penalty of this construction compared to a standard TE37 is approximately 300–500 grams per wheel depending on size. For drivers who prioritise lap times above all else, this is a reason to choose the TE37. For the considerably larger population who want a beautiful forged wheel that reliably survives years of street use, the TE37SL's reinforcement is a compelling benefit.
TE37SL vs Street Performance Competition
| Model | Construction | Weight 18×9.5J | Street Durability | Track Capability |
|---|---|---|---|---|
| RAYS VOLK RACING TE37SL | Forged monoblock double-flange | ~6.9 kg | Excellent | High |
| RAYS VOLK RACING TE37 | Forged monoblock single-flange | ~6.5 kg | Good | Very High |
| Enkei NT03+M | Flow-formed cast | ~7.6 kg | Good | Moderate |
| BBS RS-GT | Forged 3-piece | ~8.5 kg | Excellent | Moderate |
Explore the Full RAYS VOLK RACING Lineup
- RAYS VOLK RACING TE37 — the pure race-specification six-spoke monoblock, track-optimised single-flange
- RAYS VOLK RACING TE37 SAGA — 25th-anniversary edition with evolved aesthetics and deeper concave
- RAYS VOLK RACING ZE40 — circuit time attack specialist with WTAC championship pedigree
- RAYS VOLK RACING TE37 SONIC — aerodynamic six-spoke variant for Super GT-class competition
- RAYS VOLK RACING TE37 ULTRA — large-PCD TE37 variant for Porsche, BMW M, and performance sedans
- RAYS VOLK RACING RE30 — heritage fan-spoke forged classic from Japan's touring car era
- Browse all forged wheels at Hodoor World
Can't Find the Right Configuration?
If the TE37SL standard catalogue doesn't cover your exact requirements, Hodoor offers a custom forged wheel manufacturing service for bespoke specifications. Our team can source special offsets, non-catalogue widths, and proprietary PCD combinations via direct liaison with RAYS Japan, all carrying full factory quality documentation. You can also use our AI Wheel Design Service to visualise your concept before production begins.
How to Order the RAYS VOLK RACING TE37SL
- Verify your vehicle's bolt pattern, hub bore, and minimum offset requirement
- Select diameter, width, and preferred finish — Bronze is the most popular TE37SL colourway
- Contact [email protected] with vehicle details for calliper clearance verification
- Approve your specification — special sizes require a deposit at order placement
- Your TE37SL set ships from in-stock inventory or via RAYS Japan direct with certification documentation
- Track delivery via our portal at hodoor.world
TE37SL Frequently Asked Questions
Q: Should I choose the TE37 or TE37SL for a car that sees both track days and daily street use?
A: For dual-use builds, the TE37SL is almost always the correct answer. The 300–500g per wheel weight penalty is negligible on the street, and the double-flange protection against kerb damage more than compensates on cars that navigate parking garages and urban environments between circuit events. Dedicated track-only builds that are trailered to events benefit from the TE37's lower weight.
Q: Is the TE37SL compatible with stock brake callipers on the Honda Civic Type R FK8?
A: Yes. The 18×9.5J ET+45 TE37SL in 5×120 fitment provides adequate clearance for the FK8 Brembo callipers in standard configuration. For FK8 cars with upgraded Brembo or AP Racing callipers, please confirm clearance with our fitment team before ordering.
Q: Can the TE37SL be used with winter tyres?
A: The TE37SL's alumite-base coating provides corrosion resistance superior to painted wheels, making it suitable for winter use in salted conditions provided wheels are cleaned thoroughly and regularly. RAYS recommends a separate dedicated winter wheel set to protect the finish, but the TE37SL is mechanically appropriate for winter fitment with appropriate tyres.
Q: What is the difference between the TE37SL and TE37SL Super Lap Edition?
A: The TE37SL Super Lap Edition is a track-day variant of the TE37SL with a slightly thinner spoke cross-section and reduced spoke-flange transition radius — moving the specification back toward the TE37 in some respects while retaining the double-flange barrel. It is a limited-availability special edition; contact our team for current stock status.
Discover Hodoor World
Hodoor World brings together RAYS Engineering, Brixton, Forgeline, Work Wheels, and other premier forged wheel manufacturers in a single, expertly curated catalogue. Our fitment specialists are available at hodoor.world to guide your selection from concept to delivery.
Wheel Care and Maintenance
TE37SL wheels respond well to consistent basic care that preserves the coating and prevents corrosion accumulation:
- Clean regularly with pH-neutral wheel shampoo — increase frequency during winter salt-exposure periods
- Apply iron fallout remover monthly to dissolve brake particulates before they bond to the surface
- Treat all surfaces with a quality ceramic wheel coating for maximum long-term protection
- Inspect the double-flange lip after any kerb contact — minor cosmetic marks are normal; deformation warrants inspection
- Torque lug nuts to specification (typically 108 Nm on 5×114.3 platforms) and recheck after 100 km
- Do not use wire brushes or abrasive pads on any coated surface
International Delivery
Hodoor World supplies RAYS VOLK RACING TE37SL wheels to buyers across the UK, Europe, North America, Australia, and Asia-Pacific. Duties and taxes are handled transparently at checkout for DDP-supported destinations. In-stock configurations ship within 2–4 business days; custom sizes from RAYS Japan require 6–10 weeks production lead time. For freight rates and documentation, contact [email protected].
