West Coast Adapter 4×137 to 4×137 110mm CB 12×1.25 Studs 1" Thick (1-25-4137-4137)
West Coast Wheel Accessories 1-25-4137-4137 Adapter 4×137 to 4×137 110mm CB 12×1.25 Studs 1" Thick are precision-engineered wheel adapters designed to provide a secure and reliable connection for 4×137 bolt pattern wheels. Constructed from high-strength steel with a 110mm center bore, these adapters provide 12×1.25 studs and a 1" thickness, ensuring proper seating, torque transfer, and stable mounting. Ideal for custom wheel setups, performance applications, and safe daily driving.
Maintains or adapts 4×137 bolt pattern for wheel compatibility
110mm center bore ensures proper hub alignment
12×1.25 studs provide strong and secure attachment
1" thick construction supports safe load distribution
High-strength steel for durability and long-lasting performance
Enables installation of custom or aftermarket wheels
Maintains proper wheel alignment and stability
Durable construction resists deformation under load
Provides reliable and secure mounting for performance and daily driving
Technical Specifications:
Model: 1-25-4137-4137
Type: Wheel adapter
Original Bolt Pattern: 4×137
New Bolt Pattern: 4×137
Center Bore: 110mm
Material: High-strength steel
Product identification
- Brand: West Coast Wheel Accessories
- Model / MPN: 1-25-4137-4137





