Enkei - enk3798956538BK - RPF1 18x9.5 Matte Black Wheel

Enkei RPF1 wheels represent an iconic benchmark in modern motorsport, combining Formula One-derived twin-spoke architecture with ultra-lightweight performance for track cars, sport compacts, and sports sedans. Originally developed in collaboration with the McLaren Honda F1 team, the RPF1 utilizes Enkei’s MAT (Most Advanced Technology) flow-forming process to yield an exceptional strength-to-weight ratio, dramatically reducing unsprung mass for blistering acceleration, razor-sharp turn-in, and precise suspension articulation.

• Dual-spoke distribution spreads side stresses across two spokes to increase wheel rigidity under heavy lateral g-forces while optimizing brake caliper clearance
• Built to Enkei’s Spec-E testing standard, demanding higher impact drop energy and 20% more rotational fatigue cycles than standard JWL guidelines
• Multi-stage protective surface treatment shields against extreme track heat cycles, road salt corrosion, and brake dust accumulation
• Precision-machined center bore accepts hub-centric centering rings to eliminate high-speed chassis vibration and wheel stud fatigue
• Pocket milling around the bolt circle relieves extraneous weight from the center hub area without compromising structural integrity

The Enkei RPF1 is a lightweight performance wheel featuring a Formula One-derived twin-spoke design and Enkei’s MAT flow-forming process. This 18-inch wheel is finished in black and combines a 9.5-inch width with a +38 offset and 5x114.3 bolt pattern.

Key Features & Performance Benefits

• Twin-spoke architecture: Distributes side stresses across paired spokes to support wheel rigidity under lateral loads.
• MAT manufacturing process: Designed to provide a strong strength-to-weight ratio and reduce unsprung mass.
• Spec-E testing standard: Tested with higher impact drop energy and 20% more rotational fatigue cycles than standard JWL guidelines, according to the product data.
• Protective surface treatment: Multi-stage treatment helps protect against track heat cycles, road salt corrosion, and brake dust accumulation.

Key Product Specifications & Technical Data

• Brand: Enkei
• Wheel model: RPF1
• Construction: Cast
• Wheel diameter: 18 inches
• Wheel width: 9.5 inches
• Bolt pattern: 5x114.3
• Offset: +38 mm
• Hub bore diameter: 73 mm

What's Included in the Box

One Enkei RPF1 wheel.

Fitment

Fitment data was not provided. Verify vehicle, brake-clearance, hub-bore, offset, and bolt-pattern requirements before ordering.

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Unknown
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1
Construction: Cast
Hub Bore Diameter: 73.00
Offset: +38
Bolt Pattern: 5x114.3
Wheel Diameter: 18.00
Finish: Black
Wheel Model: RPF1
Wheel Width: 9.50