Apex SM-8RS 17x8 Forged Wheel - 4x100 BP / ET40 / 54.1mm CB - Satin Bronze (SM8RS178ET40-4100-541-NSBZ)
The Apex SM-8RS brings true motorsport engineering to the Mazda ND MX-5 Miata platform. Part of the Sprint Line family, this forged eight-spoke design takes inspiration from the popular SM-10RS while delivering an exceptional combination of lightweight construction, impressive stiffness, and track-ready durability. Finished in Satin Bronze, the SM-8RS offers aggressive styling backed by serious performance.
Built from forged 6061-T6 aluminum using a massive 10,000-ton forging process, the SM-8RS boasts an impressive 1,400-pound load rating. That's more than 230 pounds above JWL requirements and approximately 185 pounds stronger than many aftermarket ND Miata wheel options. Proprietary motorsport blanks, advanced Finite Element Analysis, and the reinforced Sprint spec inner lip combine to create a wheel that is equally at home on the street or the race track.
Features
- Forged 6061-T6 aluminum construction
- Produced using a 10,000-ton forging process
- Designed specifically for the Mazda ND MX-5 Miata platform
- Outstanding 1,400-pound load rating
- Exceeds JWL requirements by more than 230 pounds
- Approximately 185 pounds stronger than many aftermarket ND Miata wheels
- I-beam side-milled spokes for reduced weight and increased rigidity
- Purpose-built motorsport blank design
- Sprint spec inner lip offers 32% greater strength
- FEA-optimized spoke geometry for maximum stiffness
- Independent testing beyond JWL standards
- Large brake clearance for factory and aftermarket systems
- Paintless knurled bead seats reduce tire slippage
- Compatible with oversized race lugs and impact sockets
- Laser-engraved barrel specifications for easy identification
- Hub-centric design minimizes the need for centering rings
- Includes gloss Bronze Apex center cap
- Compatible with OEM and aftermarket TPMS sensors
- Accepts standard valve stems
- Premium Satin Bronze finish
Specifications
- Part Number: SM8RS178ET40-4100-541-NSBZ
- Series: SM-8RS Sprint Line
- Wheel Size: 17x8
- Bolt Pattern: 4x100 BP
- Offset: ET40
- Center Bore: 54.1mm
- Finish: Satin Bronze
- Material: Forged 6061-T6 Aluminum
- Load Rating: 1,400 lbs
Engineered for Track Duty
The SM-8RS was developed with serious driving in mind. Extensive computer modeling and independent testing helped Apex optimize the wheel for strength and stiffness while maintaining low weight. The result is a wheel that delivers outstanding responsiveness and durability whether you're attacking apexes on a road course or enjoying spirited backroad drives.
Fitment
- Applications utilizing a 4x100 bolt pattern and 54.1mm center bore
- ET40 offset specification
- Verify brake, suspension, tire, and fender clearance before installation
FAQs
Will OEM TPMS sensors work with these wheels?
Yes. The SM-8RS accepts factory and aftermarket TPMS sensors and utilizes standard valve stems.
Can OEM center caps be reused?
No. SM-8RS wheels include a gloss Bronze Apex center cap and are not designed to accept factory center caps.
Why Buy From Beefcake Racing?
At Beefcake Racing, we're enthusiasts who understand performance. Whether you're upgrading your weekend toy or building a dedicated track car, our knowledgeable team is ready to help with expert advice and unmatched customer service.
Email: sales@beefcakeracing.com
Phone: 1-855-827-7223
Note: Wheels that have been mounted with tires are considered used and cannot be returned or refunded. Please verify vehicle fitment before placing your order, and always test fit wheels prior to tire mounting.
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