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This ARP performance fastener, stud, bolt, tool, or assembly is the 2015+ Subaru WRX/STI and 13+ BRZ Extended 5 Wheel Stud Kit. Confirm the exact engine or vehicle application, thread size, length, material, strength series, included quantity, installation lubricant, tightening sequence, and current ARP torque specification before ordering.
Key Features
- Forged 8740 Chromoly Steel: High-strength material heat-treated to 200000 psi tensile strength resists stretching or breaking during hard cornering or drag launches.
- Extended Length Design: 51.75mm overall length with 14mm knurl diameter and M12x1.25 thread provides extra thread engagement for wheels needing 5mm more reach.
- Yes it fits all 2015-2021 WRX models and provides the extra 5mm length for wheels requiring more thread engagement beyond OEM studs.
- Forged from 8740 chromoly steel heat-treated to ARP specifications delivering 200000 psi tensile strength far exceeding OEM requirements.
- Rolled Threads: Precision rolling process increases fatigue strength by 25 percent over cut threads for longer service life in demanding conditions.
- Black Oxide Finish: Resists corrosion and galling during installation and repeated lug nut removal on track days.
Fitment
| Years | Make | Model | Application |
|---|---|---|---|
| Universal or specification-matched application. Verify every dimension, interface, load or operating requirement, and listing note. | |||
Specifications
| Brand | ARP |
|---|---|
| Manufacturer Part Number | 100-7729 |
| Product Type | Wheel Studs |
| Condition | New |
| Configuration | 2015+ Subaru WRX/STI and 13+ BRZ Extended 5 Wheel Stud Kit |
| Forged 8740 Chromoly Steel | High-strength material heat-treated to 200000 psi tensile strength resists stretching or breaking during hard cornering or drag launches |
| Rolled Threads | Precision rolling process increases fatigue strength by 25 percent over cut threads for longer service life in demanding conditions |
| Extended Length Design | 51.75mm overall length with 14mm knurl diameter and M12x1.25 thread provides extra thread engagement for wheels needing 5mm more reach |
| Black Oxide Finish | Resists corrosion and galling during installation and repeated lug nut removal on track days |
| Kit Contents | 12 studs match OEM quantity for complete front and rear replacement on one vehicle |
| Q | Will this kit fit my 2018 Subaru WRX with aftermarket wheels? A: Yes it fits all 2015-2021 WRX models and provides the extra 5mm length for wheels requiring more thread engagement beyond OEM studs |
| Method | UPS Ground or USPS Priority |
| Availability | In stock - ships same or next business day |
| Packaging | Cardboard box 6 x 4 x 1 inches |
| Weight | 1.00 lbs |
| Features Forged 8740 Chromoly Steel | High-strength material heat-treated to 200000 psi tensile strength resists stretching or breaking during hard cornering or drag launches |
What's Included
One new ARP wheel stud in the exact configuration and quantity identified by this listing. Brackets, wiring, air lines, fittings, switches, fasteners, fitting kits, fluids, covers, and accessories are included only when expressly stated for this exact part.
About ARP
Automotive Racing Products manufactures high-performance studs, bolts, nuts, washers, wheel hardware, assembly tools, and installation lubricants for engine, drivetrain, chassis, and racing applications. Thread dimensions, material, preload method, lubricant, torque, and included quantity remain exact-part specific.
Important Disclosures
- California Proposition 65 warning applies. Review the current manufacturer warning before handling or installation.
Related Parts
- Shop all ARP products
- ARP 03-06 Evo 8/9 Wheel Stud Kit (5 Studs/One Wheel)
- ARP 05-14 Ford Mustang Front Wheel Stud Kit (5 studs)
- ARP 05-14 Ford Mustang Rear Wheel Stud Kit (5 studs)
Frequently Asked Questions
How do I confirm the 2015+ Subaru WRX/STI and 13+ BRZ Extended 5 Wheel Stud Kit fits my application?
Match the exact engine family or vehicle, component location, thread diameter and pitch, under-head length, material, strength series, and every current ARP application note.
Can I reuse the factory torque value with this ARP hardware?
Not automatically. Use ARP's current instructions for the exact part, material, lubricant, tightening sequence, and preload method. Factory torque values may be based on different hardware and friction.
What is included with this ARP kit?
Only the studs, bolts, nuts, washers, lubricant, and tools expressly listed for this exact part number are included. Verify the required quantity before disassembly.
Installation Instructions
- Confirm ARP part number 100-7729, the complete application, and every required supporting component before beginning work.
- Clean and inspect all mating threads and components, then verify thread engagement, length, washers, nuts, lubricant, and required preparation before assembly.
- Follow ARP's current tightening sequence, lubricant instructions, torque or stretch method, and any retorque procedure for this exact part.
- Verify clearance, preload, fastener seating, and normal component operation before returning the vehicle or engine to service.
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