Wilwood Forged Dynalite Internal brake caliper on a white background
Technical drawing of Wilwood Dynalite 5.25 inch lug mount calipers with dimensions and specifications
Forged aluminum 4 piston caliper on a white background
Wilwood Forged Dynalite Internal Lug Mount Brake Caliper R/H
Wilwood Forged Dynalite Internal Lug Mount Brake Caliper R/H
User 1 Gray Wilwood Dynalite lug mount caliper on white background
Wilwood Forged Dynalite Internal brake caliper on a white background
Technical drawing of Wilwood Dynalite 5.25 inch lug mount calipers with dimensions and specifications
Forged aluminum 4 piston caliper on a white background
Wilwood Forged Dynalite Internal Lug Mount Brake Caliper R/H
Wilwood Forged Dynalite Internal Lug Mount Brake Caliper R/H
User 1 Gray Wilwood Dynalite lug mount caliper on white background

Wilwood Forged Dynalite Internal Lug Mount Brake Caliper R/H

WIL120-13843-BK

$252.03
/
Shipping calculated at checkout.

The Forged Dynalite Internal 4 Piston Lug Mount Brake Caliper is the next generation evolution of the legendary Dynalite series from Wilwood, engineered to deliver increased strength, reduced deflection, and a cleaner, more refined appearance. Featuring a single split bridge, spacerless design, this caliper represents the stiffest and most visually refined Dynalite design to date.

Structural deflection and volume displacement testing have proven the Forged Dynalite Internal to outperform all comparable calipers in its class, while maintaining an ultra lightweight design starting at just 3.0 lbs.

Includes:

  • (1) Forged Dynalite Internal Lug Mount Brake Caliper
  • Stainless steel pistons
  • Internal fluid passages with single inlet
  • Spacer-less forged caliper body
Specifications
  • Manufacturer: Wilwood
  • Caliper Series: Forged Dynalite Internal
  • Mount Type: Lug Mount
  • Mount Side: Universal
  • Mount Center Spacing: 5.25 in
  • Mount Hole Size: 0.39 in
  • Mount Height: 2.03 in
  • Inlet Thread Size: 1/8-27 NPT
  • Pistons: 4
  • Piston Bore: 1.75 in (x4)
  • Total Piston Area: 4.80 in²
  • Piston Material: Stainless Steel
  • Dust Boots: No
  • Caliper Body Material: Forged Aluminum
  • Weight: 3.6 lbs
Fitment
  • Direct fit for 5.25" lug-mount brake systems
  • Rotor Diameter Range: 10.00 in – 13.06 in
  • Rotor Width Range: 0.25 in – 0.38 in
  • Compatible with Dynalite Type 7112 brake pads
  • Vehicle-specific mounting brackets and rotor hats may be required depending on application.
Tech Insight

Unlike traditional billet machined calipers, the Forged Dynalite Internal benefits from stress flow forging that preserves continuous grain structure throughout the caliper body. This, combined with FEA designed radial transitions, significantly increases stiffness while minimizing weight. The spacer-less internal bridge design further reduces deflection, delivering improved pedal feel, consistent braking performance, and increased reliability in high load environments such as road racing, off-road racing, autocross, and performance street builds.