Wilwood 120-13844 Forged Dynalite 4-Piston Brake Caliper 1.75in .81 Disc

Vehicle Fitment

• Universal motorsports and custom brake system applications (Front or Rear)
• Compatible with custom brake kits using 0.81 in thick rotors and 5.25 in lug mount spacing

Features

• Wilwood Forged Dynalite Internal (FDLI) 4-piston brake caliper
• Stress-flow forged aluminum body for superior strength and rigidity
• Spacer-less bridge design increases stiffness and improves pedal feel
• Four stainless steel pistons provide balanced clamping force
• Type III hard anodized finish improves corrosion and wear resistance
• Internal fluid passages eliminate external crossover tubes
• Compatible with Wilwood 7112 pad shape used in many racing brake kits
• Multiple bleed screw positions allow flexible mounting orientation

Specifications

• Caliper Series: Forged Dynalite Internal (FDLI)
• Position: Universal Front or Rear
• Piston Count: 4
• Piston Diameter: 1.75 in
• Total Piston Area: 4.80 in²
• Rotor Thickness Compatibility: 0.81 in
• Rotor Diameter Range: 10.00 in - 13.06 in
• Mount Type: Lug Mount
• Mount Center Spacing: 5.25 in
• Brake Pad Type: Wilwood 7112
• Pad Area: 6.36 in²
• Pad Volume: 2.1 in³
• Inlet Port Size: 1/8-27 NPT
• Material: Forged Aluminum
• Piston Material: Stainless Steel
• Finish: Type III Anodized
• Dust Boots: No
• Weight: Approx. 3.6 lbs

Included Components

• 1x Wilwood 120-13844 Forged Dynalite Internal Brake Caliper

Product Description

The Wilwood 120-13844 Forged Dynalite Internal (FDLI) brake caliper is a compact, high-strength four-piston caliper designed for racing, performance street vehicles, and custom brake conversions. Manufactured using Wilwood's stress-flow forged aluminum process, the caliper body offers significantly improved grain structure and strength compared to traditional billet designs. This process increases rigidity and minimizes deflection under heavy braking loads, improving braking response and pedal consistency.

Equipped with four 1.75-inch stainless steel pistons and engineered for 0.81-inch rotor thickness, this caliper provides strong and consistent clamping force across the pad surface. The internal fluid passage design eliminates external crossover tubes while the rigid bridge structure improves caliper stability during high-load braking. With 5.25-inch lug mount spacing and compatibility with Wilwood 7112 brake pads, the 120-13844 caliper is widely used in drag racing, road racing, rally, street performance builds, and custom brake systems where lightweight construction and reliable braking performance are required.

Because this caliper is designed for universal motorsports applications, installation typically requires vehicle-specific brackets, rotors, and pads. It is commonly integrated into custom brake kits for classic muscle cars, hot rods, off-road vehicles, and track-focused builds where space efficiency and strong stopping performance are essential.