63-Series Pro Forged WheelSize: 15" x 3.5"Bolt Circle: 5 x 4.50"Back Spacing: 1.75"Offset: -6.3 mmFinish: Black and Machined Features:Stainless Steel press-in center capMounts with 1/2 in. Shanked lug nutsSFI 15.1 Certification. Race Star Wheels 63-53545172B 63-Series Pro Forged Wheel Size: 15 x 3.5 Bolt Cir. Size: 15" x 3.5". Bolt Circle: 5 x 4.50.Stainless Steel press-in center cap. Around here, we don't just sell parts - we rely on them when driving our own cars around racetracks, dirt trails, and interstates across the country. Parts may be our business - but grease, fuel, exhaust, power, and speed are what we live for. Today, more than 350 people are employed by JEGS and the business draws in hundreds of thousands of customers each year. Yet, we maintain the culture stared by Jeg Coughlin from the very beginning: a family-run performance shop that preserves a trusted relationship with each and every customer.