Enkei - enk3798904435BK - RPF1 18x9 5x112 +35 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 wheel combines Formula One-derived twin-spoke architecture with Enkei’s MAT flow-forming process to deliver lightweight performance for track cars, sport compacts, and sports sedans. This wheel features an 18-inch diameter, 9-inch width, +35 offset, 5x112 bolt pattern, 66.50 mm hub bore, and black finish.

The dual-spoke design distributes side stresses across paired spokes to support wheel rigidity under lateral forces while optimizing brake caliper clearance. Pocket milling around the bolt circle reduces unnecessary weight from the center hub area, and the precision-machined center bore accepts hub-centric centering rings. Enkei’s Spec-E testing standard is described as requiring higher impact drop energy and 20% more rotational fatigue cycles than standard JWL guidelines.

Additional features include a multi-stage protective surface treatment intended to help shield the wheel from track heat cycles, road salt corrosion, and brake dust accumulation. Fitment data was not provided beyond the listed bolt pattern, offset, and hub bore specifications. The box contents were not specified in the available product data.

Key Product Specifications & Technical Data:

• Brand: Enkei
• Wheel Model: RPF1
• Construction: Cast
• Wheel Diameter: 18 inches
• Wheel Width: 9 inches
• Bolt Pattern: 5x112
• Offset: +35 mm
• Hub Bore Diameter: 66.50 mm

Features:

• Twin-Spoke Architecture: Formula One-derived dual-spoke design distributes side stresses across paired spokes.
• MAT Manufacturing Process: Enkei’s Most Advanced Technology flow-forming process is designed to provide a strong strength-to-weight ratio.
• Rigidity and Clearance: Dual-spoke distribution supports rigidity under lateral forces while optimizing brake caliper clearance.
• Spec-E Testing: Described as requiring higher impact drop energy and 20% more rotational fatigue cycles than standard JWL guidelines.
• Protective Surface Treatment: Multi-stage treatment is intended to help protect against track heat cycles, road salt corrosion, and brake dust accumulation.
• Precision Center Bore: The 66.50 mm machined center bore accepts hub-centric centering rings.
• Weight Optimization: Pocket milling around the bolt circle relieves extraneous weight from the center hub area.
• Wheel Specifications: 18-inch diameter, 9-inch width, 5x112 bolt pattern, +35 offset, black finish, and cast construction.

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: 66.50
Offset: +35
Bolt Pattern: 5x112
Wheel Diameter: 18.00
Finish: Black
Wheel Model: RPF1
Wheel Width: 9.00