JL/JLU JK/JKU Delta Brake Kit Front and Rear For 07-18 Jeep JK/JKU Wrangler, For 19-Current Jeep JL/JLU, 2020-Current Jeep JT Gladiator

The TeraFlex Delta Brake System is the ultimate upgrade for JL and JK Wrangler/Unlimited and JT Gladiator models with oversized and heavier wheels/tire combos requiring increased braking performance. A must for 33-42 inch tires or heavy-laden overland rigs. Includes all the components required to upgrade both front and rear axles.

Delta Brake Calipers feature a high-modulus bridge. Modulus measures a material's resistance to elastic (recoverable) deformation under load. A stiff material has a high modulus, which means it only changes shape slightly under high elastic loads before returning to its normal shape.
Fits:

• JL Wrangler (2-door)
• JL Wrangler Unlimited (4-door)
• JK Wrangler (2-door)
• JT Gladiator (pickup)
• JK Wrangler Unlimited (4-door)

Specs:

• Minimum Wheel Diameter: 17 inch
• Back Spacing: 4.75 inch or less
• Bolt Pattern: 5x5 inch
• Install Time: 4 Hours

Includes:

• High-Modulus Brake Caliper Kit with Pads - Front (part number 4403401)
• High-Modulus Brake Caliper Kit with Pads - Rear (part number 4403402)
• 14 inch X 1.25 inch Vented and Slotted Rotors with 5x5 inch - Front (part number 4403455)
• 14 inch X 1.25 inch Vented and Slotted Rotors with 5x5 inch- Rear (part number 4403456)
• All necessary hardware

Delta Brake System Features:

• Significantly improved braking performance over factory brake system
• 100 percent bolt-on upgrade with basic hand tools
• Balanced front to rear brakes tuned specifically for lifted vehicles
• Brake bias and piston sizes optimized for JL and JK Wrangler/Unlimited and JT Gladiator models
• Designed to work with stock proportioning valve and ABS
• 3-year warranty

High-Modulus Brake Calipers Features:

• Opposed 4-piston caliper design with 2 inch front pistons and 1.375 inch rear pistons
• Same flow rate as factory 2-piston calipers - 4 pistons move each side half the distance instead of 2 pistons only moving one side the full distance
• EPDM synthetic boot material keeps water and other contaminants away from piston
• Hard-chrome coating on piston reduces friction to improve performance
• 4-piece High-Modulus bridge caliper design combines heat-treated 4140 cast steel bridges with 6061-T6 forged aluminum piston housings
• Steel bridges resist bending/flex better than standard aluminum or cast iron
• Improved stiffness = consistent brake feel/modulation during brake application and release
• Low-profile bridge accepts 14 inch diameter rotors behind 17 inch wheels
• 1,000-hour salt spray tested zinc- and E-dipped coating on bridges and mounts
• 300,000 psi steel formed hardware
• Calipers feature built-in auto bleeding check ball, valve, and spring for easy bleeding
• Hard-coat anodized, scratch-resistant piston bores

Brake Rotors Features:

• Massive 14 inch x 1.25 inch vented rotors for superior stopping performance
• Larger diameter rotors offer more mechanical advantage for more stopping power
• Heat-treated, heavy cast-iron rotors offer better heat absorption
• Mill-balanced, vented rotors for maximum heat dissipation
• Included slotted rotors offer better gas dissipation than smooth rotors
• Geomet coating on non-friction surfaces resists corrosion

Brake Pads Features:

• Proprietary composite-resin, semi-metallic pads provide excellent full temperature stopping power for maximum initial speed scrub with increased pad life and reduced noise and dust
• Drop-in pad design - no need to disassemble calipers to replace pads
• Stock Brake Rotor Reference:
• JL Sahara/Rubicon front: 12.9 inch x 1.1 inch (330mm x 28mm) vented rotors
• JL Sahara/Rubicon rear: 13.4 inch x 0.55 inch (342mm x 14mm) solid rotors
• JL Sport front: 12.9 inch x 0.94 inch (330mm x 24mm) vented rotors
• JL Sport rear: 12.9 inch x 0.47 inch (328mm x 12mm) solid rotors
• JK front and rear: 11.9 inch x 1.1 inch (302mm x 28mm) vented rotors (U.S.-spec)

Notes:

• Requires a minimum wheel diameter of 17 inch.
• On JK models, we recommend upgrading the stock master cylinder and brake booster to the Mopar Master Cylinder and Brake Booster Kit (part number P5160050).