fifteen52 Holeshot RSR 19x9.5 5x114.3 38mm ET 73.1mm Center Bore Rally White

Flow-Formed Motorsport Mesh in Rally White for 5x114.3 Fitments

The fifteen52 Holeshot RSR RSHRW-99554+38 is a flow-formed, one-piece wheel combining a cast center with a flow-formed barrel for a lighter, stronger construction than standard cast wheels. The 10 Y-spokes are ball-cut and scalloped to reduce rotational mass while maintaining rigidity, and variable-depth lug bowls further trim unnecessary weight. A reinforced outer lip and oversized lug pockets make this design track-capable. The Rally White finish is a gloss white powder coat applied over the A356-T6 aluminum alloy casting. At 19x9.5 with a 38mm offset and 73.1mm center bore, RSHRW-99554+38 drops directly onto 5x114.3 vehicles without adapters. TPMS sensors are supported. Each RSHRW-99554+38 wheel carries a 1,551 lb load rating and weighs approximately 25.3 lbs. Sold individually.

This Part Fits

Key Features

• Flow-formed construction: cast A356-T6 center with flow-formed barrel for reduced weight and increased tensile strength
• 10 scalloped Y-spokes with ball-cut detail and variable-depth lug bowls minimize rotational mass
• Reinforced outer lip and oversized lug pockets for track-ready durability
• Rally White gloss finish applied over the A356-T6 alloy
• TPMS compatible with standard 5x114.3 TPMS valve stems
• 73.1mm hub bore fits most 5x114.3 vehicles; use a hub-centric ring if your hub is smaller
• MPN: RSHRW-99554+38 (also referenced as RSHRW-99554+38-2 for the Face 2 profile)

What is Included

• 1 x fifteen52 Holeshot RSR 19x9.5 5x114.3 38mm Rally White wheel (RSHRW-99554+38)
• 1 x color-coded fifteen52 center cap
• Center caps and lug hardware sold separately unless noted

Installation Instructions

1. Confirm your vehicle uses a 5x114.3 bolt pattern and that the hub diameter is 73.1mm or smaller (use a hub-centric ring if smaller).
2. Torque lug nuts to your vehicle manufacturer specification in a star pattern; typical range is 85 to 100 ft-lbs for most 5x114.3 applications.
3. Verify TPMS sensor compatibility with your vehicle before installation.
4. After 25 to 50 miles of driving, re-torque lug nuts to confirm proper seating.
5. For track use, inspect and re-torque before each session per RSHRW-99554+38 specs.
6. Confirm brake caliper clearance before mounting tires; the 19x9.5 diameter accommodates most factory and aftermarket calipers on S197/S550 Mustang platforms.

Specifications

Frequently Asked Questions

Q: Does RSHRW-99554+38 require hub-centric rings?
A: The wheel has a 73.1mm center bore. Most 5x114.3 vehicles (Mustang, 370Z, WRX) have a hub diameter at or below 73.1mm. If your hub measures less than 73.1mm, hub-centric rings are recommended for smooth, vibration-free operation.

Q: Is RSHRW-99554+38 the same as RSHRW-99554+38-2?
A: Yes. The -2 suffix on some retailer SKUs designates the Face 2 profile, which is the standard 19x9.5 5x114.3 offering. RSHRW-99554+38 is the base MPN.

Q: What lug nuts do I need?
A: The Holeshot RSR uses exposed lug bowls. You will need 12x1.5 or 12x1.25 open-ended acorn lug nuts depending on your vehicle's thread pitch. Confirm your vehicle thread pitch before ordering.

Q: Will this wheel fit my Subaru WRX STI with factory big brakes?
A: The 19x9.5 size with 73.1mm bore is compatible with WRX STI 5x114.3 applications. Verify caliper clearance if running aftermarket big brake kits; spacers or a different offset may be required.

Q: What is the Rally White finish made of?
A: Rally White is a gloss white powder coat finish applied over the A356-T6 cast aluminum alloy. It is durable for street use. Avoid harsh wheel cleaners and acid-based tire dressings to maintain finish integrity.

Q: Is RSHRW-99554+38 rated for track use?
A: Yes. The flow-formed barrel and reinforced outer lip are designed for repeated track use. Always inspect for damage after track sessions and re-torque lug nuts before each event.

Q: How does flow-forming differ from standard casting?
A: Flow-forming (also called rotary forging or rim-rolling) applies heat and pressure to the cast barrel section, aligning the aluminum grain structure. This produces a stronger, lighter barrel compared to a fully cast wheel at a lower cost than full forging.

Q: What tire sizes pair well with 19x9.5 38mm on an S550 Mustang?
A: Common pairings for the S550 Mustang are 275/35R19 or 265/35R19 front and rear. Confirm with your alignment shop that the 38mm offset maintains acceptable scrub radius for your suspension setup.

Prop 65 Warning

WARNING: This product can expose you to chemicals including nickel, which is known to the State of California to cause cancer, and lead, which is known to cause birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.