SP-73

Spec-1 SP-73: Monoblock Tuner Wheel in Gloss Black

The Spec-1 SP-73 is a monoblock wheel built for compact and sport-tuner builds that want a clean, aggressive face with a machined and undercut lip detail. Its split-spoke design and undercut window give it depth without going busy, and the monoblock construction keeps the whole wheel as a single piece. It sits within the Spec-1 lineup as one of the brand's daily-driver and street-style options.

Sizes and fitments stocked

The SP-73 comes in 17x7.5 +42 and 18x8 +38. Bolt patterns cover a wide spread of tuner and Euro applications: 4x100, 5x100, 5x105, 5x108, 5x110, 5x112 and 5x114.3. That range suits Honda, VW, Mazda, Subaru and many other four- and five-lug platforms. If you run a specific pattern, browse the Spec-1 4x100, 5x100, 5x112 and 5x114.3 fitments to confirm what's available.

Concrete examples in stock include the 17x7.5 +42 in Gloss Black, the 17x7.5 +42 in Gloss Black Red Machined & Undercut, and the larger 18x8 +38 in Gloss Black.

Finishes available

The SP-73 is offered in Gloss Black, Gloss Black & Machined & Undercut, Gloss Black Milled & Undercut, Gloss Black Red Machined & Undercut, and Gloss Black & Red Undercut. The red-accent versions add contrast in the undercut and machining, like the 18x8 Milled & Undercut. See more blacked-out options on the Black Spec-1 page and red-accent builds on the Red Spec-1 page.

Price and who it suits

The SP-73 runs from $264 to $365 per wheel depending on size and finish, which makes it a value pick for street builds that want a machined, undercut look without a premium price. It works well on lowered daily drivers and mild track cars.

Compare within the Spec-1 range

If the SP-73 face isn't quite your style, the SP-68 and SP-67 offer different spoke patterns, while the SP-61 and SP-60 give alternate face designs in the same tuner sizing. The SP-57 is another mesh-adjacent option worth a look.

Ordering

ThreePiece.us is an authorized dealer selling 100% genuine wheels, never replicas, with free shipping on all orders and 30-day returns on unmounted wheels. Need help confirming what works on your car? Use the fitment calculator or call 813-535-5801. Financing is available through Affirm, Katapult, Klarna, PayPal Credit and Snap Finance at checkout.

Spec-1 SP-73: Monoblock Tuner Wheel in Gloss Black

The Spec-1 SP-73 is a monoblock wheel built for compact and sport-tuner builds that want a clean, aggressive face with a machined and undercut lip detail. Its split-spoke design and undercut window give it depth without going busy, and the monoblock construction keeps the whole wheel as a single piece. It sits within the Spec-1 lineup as one of the brand's daily-driver and street-style options.

Sizes and fitments stocked

The SP-73 comes in 17x7.5 +42 and 18x8 +38. Bolt patterns cover a wide spread of tuner and Euro applications: 4x100, 5x100, 5x105, 5x108, 5x110, 5x112 and 5x114.3. That range suits Honda, VW, Mazda, Subaru and many other four- and five-lug platforms. If you run a specific pattern, browse the Spec-1 4x100, 5x100, 5x112 and 5x114.3 fitments to confirm what's available.

Concrete examples in stock include the 17x7.5 +42 in Gloss Black, the 17x7.5 +42 in Gloss Black Red Machined & Undercut, and the larger 18x8 +38 in Gloss Black.

Finishes available

The SP-73 is offered in Gloss Black, Gloss Black & Machined & Undercut, Gloss Black Milled & Undercut, Gloss Black Red Machined & Undercut, and Gloss Black & Red Undercut. The red-accent versions add contrast in the undercut and machining, like the 18x8 Milled & Undercut. See more blacked-out options on the Black Spec-1 page and red-accent builds on the Red Spec-1 page.

Price and who it suits

The SP-73 runs from $264 to $365 per wheel depending on size and finish, which makes it a value pick for street builds that want a machined, undercut look without a premium price. It works well on lowered daily drivers and mild track cars.

Compare within the Spec-1 range

If the SP-73 face isn't quite your style, the SP-68 and SP-67 offer different spoke patterns, while the SP-61 and SP-60 give alternate face designs in the same tuner sizing. The SP-57 is another mesh-adjacent option worth a look.

Ordering

ThreePiece.us is an authorized dealer selling 100% genuine wheels, never replicas, with free shipping on all orders and 30-day returns on unmounted wheels. Need help confirming what works on your car? Use the fitment calculator or call 813-535-5801. Financing is available through Affirm, Katapult, Klarna, PayPal Credit and Snap Finance at checkout.