Rotora HD Challenge Front Big Brake Kit for the Jeep Grand Cherokee
The HDGrandCherokee-355×32 front big brake kit upgrades the 2011-2021 Jeep Grand Cherokee with a 6 piston RG608 caliper and 355x32mm 2 piece disc for stronger, more consistent front stopping power. The HDGrandCherokee-355×32 kit is also available in 355x35mm and 390x36mm disc sizes, with an optional CNC engraved HD logo bell hat for a finished, upgraded look.
Key Features
- 355x32mm oversize airfoil slotted or drilled directional disc rings, heat treated and zinc plated for corrosion resistance
- Ductile iron calipers engineered for structural stiffness under repeated heavy braking loads
- Stainless steel pistons and dust boot seals for corrosion free, long life caliper operation
- S45C steel bell hats with stainless steel HD float drive hardware for 2 piece disc expansion management
- S45C carbon steel caliper brackets with all required mounting hardware included
- HD graphite metallic pads with enlarged friction surface area for extended thermal capacity and pad life
- DOT compliant stainless steel braided brake lines that eliminate hose expansion and firm up pedal feel
- 100% bolt on compatibility with OEM master cylinder, ABS, and traction control systems
- Available in slotted or drilled disc finish
Vehicle Fitment
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 2011-2021 | Jeep | Grand Cherokee | Laredo, Limited, Overland, Summit, Trailhawk |
Specifications
| Detail | Value |
|---|---|
| SKU / Part Number | HDGrandCherokee-355×32 |
| UPC | Not published by manufacturer, contact Black Ops Auto Works for verification |
| Axle | Front |
| Disc Size | 355x32mm |
| Disc Type | 2 piece directional rings, heat treated and zinc plated |
| Disc Finish | Slotted or Drilled |
| Caliper Material | Ductile iron |
| Caliper Pistons | Stainless steel |
| Bell Hat Material | S45C steel |
| Bracket Material | S45C carbon steel |
| Pad Compound | HD graphite metallic (upgraded compounds available) |
| Brake Lines | DOT stainless steel braided |
| ABS Compatible | Yes |
| Traction Control Compatible | Yes |
| Sold As | Per axle, complete front axle kit |
What’s Included
- 1 pair of ductile iron calipers with pad retaining hardware
- 1 pair of HDGrandCherokee-355×32 directional disc rings, slotted or drilled, heat treated and zinc plated
- 1 pair of S45C steel bell hats with stainless steel HD float drive hardware
- 1 pair of S45C carbon steel caliper brackets with mounting hardware
- 1 set of HD graphite metallic brake pads for the front axle
- 1 pair of DOT stainless steel braided brake lines with banjo bolts and crush washers
About Rotora
Rotora manufactures high performance and heavy duty brake systems for street, track, and extreme duty vehicle applications. Their engineering background includes supplying brake solutions to armored vehicle, security, and military manufacturers globally. The HD Challenge series applies that expertise to production trucks and SUVs that see real world heavy use. This front system gives the Grand Cherokee braking hardware matched to its performance and duty requirements.
Related Parts on Our Site
- Jeep Grand Cherokee 2011-2021 HD Challenge Rear Brake System
- Jeep Grand Cherokee 2012-2021 Front Stainless Steel Brake Lines
- Jeep Grand Cherokee 2011-2021 Rear Stainless Steel Brake Lines
Frequently Asked Questions
What is the HDGrandCherokee-355×32?
The HDGrandCherokee-355×32 is a Rotora HD Challenge front brake system built for the 2011-2021 Jeep Grand Cherokee Laredo, Limited, Overland, Summit, Trailhawk. It uses a 355x32mm 2 piece disc, ductile iron calipers, and HD graphite metallic pads to deliver more thermal capacity and stopping power than the factory front brakes.
What is the difference between the 355x32mm, 355x35mm, and 390x36mm HDGrandCherokee-355×32 disc options?
All three use the same 6 piston RG608 caliper platform. The 355x32mm HDGrandCherokee-355×32 disc is the standard thickness, the 355x35mm option adds extra thermal mass in the same diameter, and the 390x36mm option increases both diameter and thickness for maximum stopping power and heat capacity.
Will this front kit work with my stock master cylinder?
Yes. It is designed for full compatibility with the factory master cylinder, ABS, and traction control with no electronic bypass or modification required.
Should I choose slotted or drilled front discs?
Slotted discs resist thermal cracking better and suit regular hard use, while drilled discs offer strong wet weather bite and a more aggressive look. Caliper and pad hardware are identical between both options.
What wheel size is needed to clear the 355x32mm front disc?
Larger discs in this size range generally require larger diameter wheels with sufficient offset for caliper clearance. Confirm fitment against Rotora’s wheel clearance chart before ordering.
Can I pair this front kit with a different brand kit on the other axle?
This front system functions independently, but for balanced brake bias Rotora recommends pairing it with the matching HD Challenge system for the opposite axle on the Grand Cherokee.
What pads come installed with this kit?
The kit ships with HD graphite metallic pads sized for the front axle. Upgraded compounds are available from Rotora for track or extreme duty use beyond the included street pads.
Is a brake bed in procedure required after installing this system?
Yes. The new discs carry a zinc coating that must be worn off with light stops before pad material transfers evenly to the disc surface through a series of progressively harder stops.
Does the HDGrandCherokee-355×32 include a warranty?
Rotora HD Challenge systems are covered by Rotora’s manufacturer warranty against defects in materials and workmanship. Contact Rotora or your reseller for full terms.
Install Instructions
- Raise the vehicle, engage the parking brake, and remove both front wheels
- Loosen the hard brake line fitting at each front caliper and cap it to minimize fluid loss
- Remove the OEM caliper, bracket, and rotor assembly from each side
- Clean the hub face and install the new S45C caliper bracket using the original mounting bolts torqued to specification
- Mount the new 355x32mm disc assembly to the hub, confirming directional orientation for each side
- Insert brake pads into the caliper and install guide pins through both pad mounting ears
- Mount the caliper onto the bracket and torque caliper bolts to specification
- Install the directional stainless braided brake lines along the same path as the OEM hoses
- Bleed the brake system starting with the caliper farthest from the master cylinder
- Reinstall wheels torqued to factory spec and complete the full break in procedure before normal driving
WARNING: This product can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and reproductive harm. For more information go to www.P65Warnings.ca.gov.
