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Baer Brakes SS4 Brake System Rear 07-17 Jeep Wrangler JK 18-Current Wrangler JL And 20-Current Gladiator JT W/OE Rear End Graphite Gray – 4402007GG-2

Baer Brakes

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  • Fits 2007–2018 Jeep Wrangler JK, 2018–2025 Wrangler JL and 2020–2025 Gladiator JT with the OE rear end
  • S4 four-piston rear caliper in graphite gray
  • 13 inch one-piece slotted, zinc-plated rotor that fits most 17 inch or larger wheels
  • All mounting brackets and pre-assembled hardware included; hoses not included
  • Part number 4402007GG-2, 5 lug, 5×5.00 bolt pattern

Description

Overview

The Baer Brakes 4402007GG-2 is a rear brake system kit built around the SS4 caliper, made for the 2007 to 2018 Jeep Wrangler JK, 2018 to 2025 Wrangler JL and 2020 to 2025 Gladiator JT with the OE rear end. It pairs a 4-piston S4 caliper in graphite gray with a 13 inch one-piece slotted rotor and the DR1-C pad type.

Rotors come pre-assembled with NAS high grade stainless hardware, and all mounting brackets and hardware are included. The kit is sold as a complete set for these Jeep models. The 13 inch SS4 Plus fits most 17 inch or larger wheels, but fit depends on the wheel style, so compare the S193H template to your wheel before ordering.

Key features

  • 4-piston S4 caliper in a powder coated graphite gray finish
  • Hard anodized aluminum pistons with stainless steel abutments and noise suppression clips
  • Dual seals for dust, weather and pressure
  • CNC machined from US sourced forged or billet aluminum
  • 13 inch one-piece slotted and zinc-plated rotor
  • Rotors pre-assembled with NAS high grade stainless hardware
  • DR1-C pad type
  • Manufactured in Phoenix, AZ

Trail and road use

Graphite gray is a finish choice only. The caliper’s function is set by its piston count, floating design and the rotor it clamps, so the color does not change how the kit performs. Many owners pick a finish to match wheels or a build theme, which is a fair reason as long as fitment has been confirmed first.

A rear kit works as part of the whole braking system. Pad material affects bite, fade and dust, so choose pads that suit the way the vehicle is used, whether that means highway commuting, rock crawling or towing. Pair new rear hardware with fresh fluid, since old fluid absorbs moisture and can soften pedal feel under heavy braking.

  • Choose pads for your main type of driving
  • Replace old brake fluid during the install
  • Clean rotor and caliper mounting faces before fitting
  • Recheck torque on bracket bolts after the first drive

Specifications

Brand Baer Brakes
Part number 4402007GG-2
UPC 90127995556
Sold as Kit
Axle Rear
Caliper S4, 4-piston, floating
Caliper color Graphite gray
Rotor 13.0 inch outside diameter, 1-piece, vented, slotted and zinc plated
Pad type DR1-C
Minimum wheel diameter 17.0 inch
Lug count 5 lug
Wheel bolt pattern 5×5.00 in
Template S193H
Grade type Performance
Country of origin USA

Vehicle fitment

Fitment covers the 2007 to 2018 Jeep Wrangler JK, 2018 to 2025 Jeep Wrangler JL and 2020 to 2025 Jeep Gladiator JT, each with the OE rear end.

Earlier Wrangler generations such as the TJ and LJ, and Grand Cherokee models, are not covered by this kit. Confirm your vehicle’s year, model and trim before ordering.

Installation notes

All mounting brackets and hardware are included, so separate brackets should not be needed. Brake hoses are not included, so plan to source compatible rear hoses separately. Baer recommends comparing the S193H template with your wheel, since Baer cannot guarantee fit for every wheel style or manufacturer.

What’s included

The kit includes the S4 four-piston rear caliper, the 13 inch one-piece slotted and zinc-plated rotor, pre-assembled with NAS high grade stainless hardware, and all mounting brackets and hardware.

Not included: brake hoses.

Specification

Shipping weight 39 lbs
Package dimensions 16.25 × 15.5 × 15.5 in
brands

Sold as

Kit

Wheel bolt pattern (in)

5×5.00

Lug nuts

5 Lug

Rotor type

1-Piece

Country of origin

USA

Fitment

VehicleYearsTrims
Jeep Gladiator2020–2025All
Jeep Wrangler (JK)2007–2018All
Jeep Wrangler (JL)2018–2025All

Use “Select your vehicle” at the top of the page to check this part against your vehicle.

Questions & Answers

Which vehicles does the Baer Brakes 4402007GG-2 fit?

It fits 2007 to 2018 Jeep Wrangler JK, 2018 to 2025 Wrangler JL and 2020 to 2025 Gladiator JT models with the OE rear end. Confirm your vehicle's year, model and trim before ordering.

What is included with the SS4 rear brake kit?

The kit includes the S4 four-piston rear caliper, a 13 inch one-piece slotted and zinc-plated rotor, pre-assembled with NAS high grade stainless hardware, plus all mounting brackets and hardware. Hoses are not included, and the park brake re-uses the OE setup.

Will the 13 inch rotor fit my 17 inch wheels?

The 13 inch SS4 Plus fits most 17 inch or larger wheels, but fit is not guaranteed for every wheel style. Use the S193H template to compare the system with your wheel before ordering.

Can the rear caliper color be changed later?

Caliper finish can be repainted, but coatings must be rated for brake heat. Remove the caliper, clean and degrease it, and mask the piston and seal areas so no paint reaches the moving parts.

How often should the rear rotor be inspected?

Inspect it at every pad change and after any heavy use. Look for deep scoring, heat cracking and uneven thickness, and check for pulsing in the pedal. A rotor showing these signs usually needs replacing rather than resurfacing.

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