TeraFlex 4403450

Delta Brake Kit is the ultimate upgrade for JL/JLU and JK/JKU Wrangler models with oversized and heavier wheels/tire combos requiring increased braking performance. A must for 33-42” tires or heavy-laden overland rigs. Includes all the components required to upgrade both front and rear axles.
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. The Delta Brake Calipers features a high-modulus bridge.


Front & Rear Calipers:
Opposed 4-piston caliper design w/ 2” 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 & 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 forged steel bridges w/ T6 6061 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 & release
Low-profile bridge accepts 14” diameter rotors behind 17” wheels
1,000-hour salt spray tested zinc-& E-dipped coating on bridges & mounts
300,000 psi steel-formed hardware
Calipers feature built-in auto bleeding check ball, valve, & spring for easy bleeding
Hard-coat anodized, scratch-resistant piston bores


Front & Rear Brake Rotors:
Massive 14” x 1.25” 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


Front & Rear Brake Pads:
Proprietary composite-resin, semi-metallic pads provide excellent full temperature stopping power for maximum initial speed scrub w/ increased pad life & reduce noise & dust
Drop-in pad design – no need to disassemble calipers to replace pads


Stock Brake Rotor Reference:
JL/JLU Sport front: 12.9” x 0.94” (330mm x 24mm) vented rotors
JL/JLU Sport rear: 12.9” x 0.47” (328mm x 12mm) solid rotors
JL/JLU Sahara/Rubicon front: 12.9” x 1.1” (330mm x 28mm) vented rotors
JL/JLU Sahara/Rubicon rear: 13.4” x 0.55” (342mm x 14mm) solid rotors
JK/JKU front: 11.9” x 1.1” (302mm x 28mm) vented rotors (U.S.-spec)
JK/JKU rear: 11.9” x 1.1” (302mm x 28mm) vented rotors (U.S.-spec)