Apex SM-8RS 17x8 Forged Wheel - 4x100 BP / ET40 / 54.1mm CB - Anthracite (SM8RS178ET40-4100-541-AN)
The Apex SM-8RS was developed specifically for the Mazda ND MX-5 Miata and delivers race-ready performance in a lightweight forged package. As part of Apex's Sprint Line, this 8-spoke design takes inspiration from the popular SM-10RS while offering exceptional strength, stiffness, and weight optimization for enthusiasts who demand maximum performance from their Miata. Finished in Anthracite, the SM-8RS combines aggressive styling with uncompromising durability.
Manufactured from forged 6061-T6 aluminum using an immense 10,000-ton forging process, the SM-8RS features a remarkable 1,400-pound load rating. Extensive Finite Element Analysis, purpose-built motorsport blanks, and the reinforced Sprint spec inner lip allow this wheel to provide exceptional strength while remaining impressively lightweight. Independent testing exceeding JWL standards ensures confidence whether you're carving back roads or spending weekends at the race track.
Features
- Forged 6061-T6 aluminum construction
- Manufactured using a 10,000-ton forging process
- Designed specifically for the Mazda ND MX-5 Miata platform
- Impressive 1,400-pound load rating
- Over 230 pounds stronger than required for JWL certification
- 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 for strength and stiffness
- Independently tested above JWL standards
- Massive brake clearance for OEM and aftermarket applications
- Paintless knurled bead seats maximize tire grip
- Compatible with oversized race lugs and impact sockets
- Laser-engraved wheel specifications for easy identification
- Hub-centric design minimizes the need for centering rings
- Gloss black Apex center cap included
- Compatible with OEM and aftermarket TPMS sensors
- Accepts standard valve stems
- Premium Anthracite finish
Specifications
- Part Number: SM8RS178ET40-4100-541-AN
- Wheel Size: 17x8
- Bolt Pattern: 4x100 BP
- Offset: ET40
- Center Bore: 54.1mm
- Finish: Anthracite
- Material: Forged 6061-T6 Aluminum
- Series: SM-8RS Sprint Line
- Load Rating: 1,400 lbs
Engineered for Real Performance
The SM-8RS is purpose-built for enthusiasts who demand more than appearance alone. Extensive testing, optimized spoke geometry, and a stronger inner lip help deliver the stiffness and durability needed for aggressive driving, autocross competition, and track days while maintaining the lightweight feel that makes the ND Miata such an enjoyable platform.
Fitment
- Applications utilizing a 4x100 bolt pattern and 54.1mm center bore
- ET40 offset specification
- Verify brake, tire, suspension, and fender clearance before installation
FAQs
Are SM-8RS wheels compatible with TPMS sensors?
Yes. All SM-8RS wheels accept OEM and aftermarket TPMS sensors and utilize standard valve stems.
Can factory center caps be reused?
No. The SM-8RS includes a gloss black Apex center cap and does not support OEM center caps.
Why Buy From Beefcake Racing?
Beefcake Racing is committed to helping enthusiasts find the right parts for their build. Whether you're building a dedicated track car or upgrading your street-driven Miata, our knowledgeable team is here to provide exceptional customer service and expert support.
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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