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'' 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''â„¢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.

WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer, and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov/product features_benefits=Delta Brake System: - Significantly improved braking performance over factory brake system - 100% bolt-on upgrade w/ basic hand tools - Balanced front to rear brakes tuned specifically for lifted vehicles - Brake bias and piston sizes optimized for all JL, JK, and JT models - Designed to work w/ stock proportioning valve and ABS - 3-year warranty Calipers: - Opposed 4-piston calipers w/ 2'' front and 1.375'' rear pistons - Same flow rate as factory 2-piston calipers ''" 4 pistons move each side half the distance instead of 2 pistons only moving 1 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 w/ 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'' diameter rotors behind 17'' wheels - 1,000-hour salt spray tested zinc- and E-dipped coating on bridges and mounts - 300,000 psi steel formed hardware - Built-in auto bleeding check ball, valve, and spring for easy bleeding - Hard-coat anodized, scratch-resistant piston bores Rotors: - Massive 14'' x 1.25'' vented rotors offer more mechanical advantage for superior stopping performance - Heat-treated, heavy cast-iron rotors offer better heat absorption - Mill-balanced, slotted and vented rotors offer maximum gas and heat dissipation, respectively, compared to solid rotors - GEOMET coating on non-friction surfaces resists corrosion Pads: - Proprietary composite-resin, semi-metallic pads provide excellent full temperature stopping power for maximum initial speed scrub w/ increased pad life and reduced noise and dust - Drop-in pad design ''" no need to disassemble calipers to replace pads,fitment_info=Fits: - JL Wrangler (2-door) - JL Wrangler Unlimited (4-door) - JT Gladiator (pickup) - JK Wrangler (2-door) - JK Wrangler Unlimited (4-door) Specs: - Minimum Wheel Diameter: 17'' - Back Spacing: 4.75'' or less - MUST VERIFY FITMENT W/ DOWNLOADABLE TEMPLATE - Bolt Pattern: 8x6.5'' Stock Brake Rotor Reference: - JL Sahara/Rubicon front: 12.9'' x 1.1'' (330mm x 28mm) vented rotors - JL Sahara/Rubicon rear: 13.4'' x 0.55'' (342mm x 14mm) solid rotors - JL Sport front: 12.9'' x 0.94'' (330mm x 24mm) vented rotors - JL Sport rear: 12.9'' x 0.47'' (328mm x 12mm) solid rotors - JT front: 12.9'' x 1.1'' (330mm x 28mm) vented rotors - JT rear: 13.6'' x 0.86'' (345mm x 22mm) solid rotors - JK front and rear: 11.9'' x 1.1'' (302mm x 28mm) vented rotors (U.S.-spec),height=15.5,installation_time=4 Hours,installation_video=https://www.youtube.com/embed/Zadgu69oIjM,https://www.youtube.com/embed/XRkAnIV22pE,length=30,product_image_size=Default,product_notes=- Requires a minimum wheel diameter of 17''.,sw_featured=No,width=15