SP-51

Spec-1 SP-51: A Clean Split-Spoke Monoblock for Tuner Builds

The Spec-1 SP-51 is a monoblock wheel built for compact and sport-import platforms that want a sharp, mesh-influenced split-spoke face without the boutique price. The spokes fan out to a tucked lip, giving the wheel depth on the popular offsets it's stocked in. It sits within the wider Spec-1 wheel lineup as one of the daily-friendly street designs, aimed at owners who want a finished look on a real-world budget.

Sizes and Fitments Stocked

The SP-51 comes in 17, 18 and 20 inch diameters, in widths of 7.5, 8 and 8.5, with offsets of +38 and +42. Bolt patterns cover a wide spread of front-drive and import applications: 4x100, 5x100, 5x105, 5x108, 5x110, 5x112 and 5x114.3.

For concrete examples, the 4x100/4x114.3 17x7.5 +42 in Gloss Black is a common Civic and Miata-era size, while the 18x8 +38 in Gloss Black & Machined steps up the diameter for a more aggressive stance. Five-lug owners can look at the 5x100/5x114.3 17x7.5 +42 or the 5x100/5x114.3 18x8 +38. Browse related fitments through the Spec-1 5x100, 5x114.3 and 4x100 pages.

Finishes

Three finishes are offered: Gloss Black, Gloss Black & Machined, and Gloss Black & Red Machined for a touch of contrast on the spoke faces. See more options on the black Spec-1 and red Spec-1 collection pages.

Price and Who It Suits

SP-51 pricing runs from $133 to $451 per wheel depending on size, bolt pattern and finish. It suits import and compact owners chasing a clean split-spoke look on a sensible budget. If you want alternatives within the same family, the SP-52 and SP-53 offer different face designs at similar price points, the SP-55 and SP-57 lean into other spoke patterns, and the SP-60 is worth a look if you want a different profile.

Ordering and Fitment

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. Not sure which SP-51 spec works on your car? Run the numbers with our wheel fitment calculator or call our team at 813-535-5801. Spread the cost with Affirm, Katapult, Klarna, PayPal Credit and Snap Finance at checkout.

Spec-1 SP-51: A Clean Split-Spoke Monoblock for Tuner Builds

The Spec-1 SP-51 is a monoblock wheel built for compact and sport-import platforms that want a sharp, mesh-influenced split-spoke face without the boutique price. The spokes fan out to a tucked lip, giving the wheel depth on the popular offsets it's stocked in. It sits within the wider Spec-1 wheel lineup as one of the daily-friendly street designs, aimed at owners who want a finished look on a real-world budget.

Sizes and Fitments Stocked

The SP-51 comes in 17, 18 and 20 inch diameters, in widths of 7.5, 8 and 8.5, with offsets of +38 and +42. Bolt patterns cover a wide spread of front-drive and import applications: 4x100, 5x100, 5x105, 5x108, 5x110, 5x112 and 5x114.3.

For concrete examples, the 4x100/4x114.3 17x7.5 +42 in Gloss Black is a common Civic and Miata-era size, while the 18x8 +38 in Gloss Black & Machined steps up the diameter for a more aggressive stance. Five-lug owners can look at the 5x100/5x114.3 17x7.5 +42 or the 5x100/5x114.3 18x8 +38. Browse related fitments through the Spec-1 5x100, 5x114.3 and 4x100 pages.

Finishes

Three finishes are offered: Gloss Black, Gloss Black & Machined, and Gloss Black & Red Machined for a touch of contrast on the spoke faces. See more options on the black Spec-1 and red Spec-1 collection pages.

Price and Who It Suits

SP-51 pricing runs from $133 to $451 per wheel depending on size, bolt pattern and finish. It suits import and compact owners chasing a clean split-spoke look on a sensible budget. If you want alternatives within the same family, the SP-52 and SP-53 offer different face designs at similar price points, the SP-55 and SP-57 lean into other spoke patterns, and the SP-60 is worth a look if you want a different profile.

Ordering and Fitment

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. Not sure which SP-51 spec works on your car? Run the numbers with our wheel fitment calculator or call our team at 813-535-5801. Spread the cost with Affirm, Katapult, Klarna, PayPal Credit and Snap Finance at checkout.