Wilwood 120-17683 Forged Dynalite Internal 4-Piston Caliper, Anodized

Vehicle Fitment

• Universal fit - lug-mount caliper (5.25" mounting center).
• Suitable for custom, track, or high-performance street applications.

Features

• Forged aluminum body for high strength and lightweight performance
• 4 stainless-steel pistons delivering consistent, powerful braking
• Stress-flow design with a single split bridge for enhanced rigidity
• Type III hard-anodized finish for durability and corrosion resistance
• High rotor compatibility - supports large-diameter and thick rotors
• Compact lug-mount architecture to fit a wide variety of configurations
• No spacer needed - modern design improves structural integrity
• Universal mounting side for flexible installation

Specifications

• Part Number: 120-17683
• Series: Forged Dynalite Internal
• Piston Count: 4
• Total Piston Area: 4.80 in²
• Piston Bore: 1.75" x 4
• Rotor Diameter Compatibility: 10.00" - 13.06"
• Rotor Width Compatibility: 1.20" - 1.28"
• Pad Area: 6.36 in²
• Pad Volume: 2.10 in³
• Mount Center: 5.25" lug
• Mount Hole Size: 0.39"
• Mount Height: 2.03"
• Inlet Thread: 1/8-27 NPT
• Weight: ~3.6 lb per caliper

Included Components

• 1x caliper body - Wilwood 120-17683 (Anodized)
• 4x stainless steel pistons with seals
• Bleed screw
• Installation instructions

Product Description

The Wilwood 120-17683 is a high-performance, 4-piston caliper designed for strength, precision, and reliability. Crafted from forged aluminum using stress-flow technology, its single split-bridge design improves rigidity and reduces the risk of deflection under load.

With four stainless pistons and a total piston area of 4.80 in², this caliper delivers strong and consistent braking force. It supports rotors up to 13.06" in diameter and 1.28" in width, making it well-suited for a wide range of performance and racing applications.

Its lug-mount configuration (5.25" center) and universal mounting side provide great flexibility for custom setups. The anodized finish offers durable protection against corrosion, making this caliper a reliable choice for demanding environments. Proper installation and bleed technique will ensure optimal performance.