411 Works 1.5" Steel Cups | Precision CNC Machined | Fabrication Components

Overview

The 411 Works 1.5" Steel Cups are precision-machined components designed for custom fabrication projects, including tubular subframes and tubed front and rear ends. These cups serve as reliable mounting or spacer solutions where a durable, accurately sized steel cup is required. Available in two variations—Deep and Scallop—they accommodate various fabrication needs with bolt hole sizes of M10 and 3/8, making them versatile for many custom Subaru chassis builds and suspension setups.

Manufactured in-house on HAAS CNC machines using high-quality 1018 steel sourced from North America, these cups reflect 411 Works’ commitment to precision and quality. The use of 1018 steel ensures a strong yet workable material that can withstand the stresses of performance applications while maintaining excellent machinability. The cups’ dimensions—1.5" diameter and 1" tall—are optimized for compatibility with common fabrication hardware, providing a seamless integration into custom Subaru suspension and chassis projects.

For Subaru enthusiasts undertaking custom suspension or chassis modifications, these steel cups offer a dependable and precise solution that complements other 411 Works components. Their robust construction and exact sizing help maintain structural integrity and alignment, which are critical for handling and safety in performance builds. Whether you’re fabricating a tubular subframe for a WRX, STI, or other Subaru platform, these cups provide the quality and fitment consistency needed for professional results.

Features & Specifications

This 411 Works 1.5" Steel Cup is engineered for custom fabrication applications and features a 1.5" diameter with M10 and 3/8 bolt hole sizes. Constructed from North American 1018 steel, it delivers strength and precision for Subaru enthusiasts seeking reliable chassis and suspension components.

• Brand: 411 Works
• Product: 1.5" Steel Cups
• Part Number: 411-SCSCM10381
• Fitment: N/A (Universal Fabrication Use)
• Material: 1018 Steel
• Finish: Raw Steel (Uncoated)
• Construction: CNC Machined
• Origin: Made in USA
• Diameter: 1.5 inches
• Height: 1 inch
• Bolt Hole Size: M10 & 3/8 inch
• Variations: Deep and Scallop options available

Key Benefits

• Precision: CNC machining ensures exact dimensions for consistent fitment in custom Subaru chassis projects.
• Durability: Made from high-quality 1018 steel, these cups provide strength and reliability under stress.
• Versatility: Two variations and common bolt hole sizes make these cups adaptable to a wide range of fabrication needs.
• Made in USA: Manufactured domestically with North American steel for quality assurance and material traceability.
• Compatibility: Ideal for custom tubular subframes and suspension components on Subaru WRX, STI, and other platforms.
• Fabrication Support: Designed to pair seamlessly with other 411 Works components for streamlined builds.

What's Included

• 1× 411 Works 1.5" Steel Cup (Deep or Scallop variation)

Installation & Compatibility

Installation of the 411 Works 1.5" Steel Cups requires basic fabrication skills and appropriate tools for welding or bolting into custom chassis or suspension assemblies. These cups are designed for universal use in custom builds rather than direct bolt-on applications, so professional installation or experienced DIY fabrication is recommended. No special tools beyond standard fabrication equipment are necessary. Verify bolt hole size compatibility (M10 or 3/8 inch) with your hardware before installation.

• Professional Installation: Recommended for optimal fit and safety
• Modifications Required: None, but welding or bolting into custom assemblies needed
• Verify Compatibility: Confirm bolt hole size and cup variation for your specific fabrication project

Shop with confidence at Subimods—your Subaru parts specialists.