Description
Baer Claw Extreme+ Rear Disc Brake Kit 4262339R
Upgrade your vehicle’s rear braking performance with the Baer Claw Extreme+ Rear Disc Brake Kit, Part Number 4262339R. Designed for demanding street performance and track use, this premium rear brake system combines Baer’s forged six-piston Monoblock caliper technology with a large 14-inch vented rotor for improved braking consistency, heat management, and pedal response.
The Extreme+ range brings race-inspired braking technology to road-going performance vehicles. Its six-piston 6S caliper is machined from a single piece of 2618 forged aluminum, creating a rigid, lightweight caliper structure designed to minimize flex during hard braking.
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Race-inspired six-piston Monoblock caliper
The Baer 6S caliper is one of the most advanced road-going caliper designs in the Baer range. Unlike a conventional multi-piece caliper, the Monoblock body is machined from a single piece of forged 2618 aluminum. This construction helps provide high stiffness with reduced weight, supporting more consistent braking performance under demanding conditions.
The caliper uses staggered piston sizes to promote even pad loading and help minimize uneven pad wear. Stainless-steel pistons, abutments, and noise-suppression springs contribute to dependable operation and controlled pad movement.
For customers comparing premium brake systems, our guide to Baer brakes versus Wilwood brakes explains the differences in caliper construction, rotor design, street performance, and track suitability.
Key caliper features
- Six-piston forged Monoblock 6S caliper
- Machined from a single piece of 2618 forged aluminum
- Red powder-coated finish with machined, hand-painted Baer logos
- Stainless-steel pistons and abutments
- Staggered piston sizes to help reduce uneven pad wear
- Noise-suppression springs included
- D1247/DR11 race pad backing-plate profile
- Dual dust/weather and pressure seals
- Correct banjo-style brake-hose fittings
- Available for rear applications with a parking-brake provision
14-inch vented performance rotors
The included 14-inch rear rotors provide greater thermal capacity than smaller factory-style rotors. Their vented construction helps move heat away from the braking surface, while the cross-drilled and slotted friction surface supports consistent pad contact during repeated braking events.
The slotted design helps refresh the pad contact surface, while the drilled features assist with heat and gas management. Rotor performance depends on correct bedding, pad selection, vehicle setup, and intended use.
If you are replacing individual components or planning a complete braking upgrade, browse our performance brake rotors and high-performance brake pads.
Ceramic brake pads included
This system includes ceramic brake pads selected for street and performance use. Ceramic friction material can offer smooth operation, predictable pedal feel, and reduced dust compared with some aggressive metallic compounds.
Drivers who regularly participate in track events should confirm that the supplied pad compound meets their temperature and friction requirements. For dedicated competition use, a compatible race pad may be preferred.
Before fitting new pads and rotors, read our guide on how to bed new brake pads and rotors. Correct bedding helps establish an even transfer layer and supports consistent braking performance.
Rear parking-brake provision
The Baer Extreme+ rear system incorporates a drum-in-hat parking brake design, allowing the parking brake mechanism to remain separate from the main hydraulic braking surface. This helps preserve parking-brake functionality while providing space for a larger performance rotor and six-piston caliper.
For additional components, see our range of performance brake hoses and fittings.
What is included?
The Baer Claw Extreme+ 4262339R kit includes:
- Two rear six-piston Baer 6S Monoblock calipers
- Rear 14-inch vented rotors
- Cross-drilled and slotted rotor surfaces
- Ceramic brake pads
- Brake hoses
- Correct fittings and hardware for the applicable configuration
- Rear parking-brake provision
The kit does not include:
- Front rotors
- Front calipers
- Master cylinder
- Brake booster
- Front spindles
If you are building a complete braking system, explore our Baer front brake kits to coordinate front and rear braking performance.
Baer Claw Extreme+ 4262339R versus standard rear brakes
| Feature | Standard rear brake system | Baer Claw Extreme+ 4262339R |
|---|---|---|
| Caliper design | Conventional factory-style design | Six-piston forged Monoblock 6S |
| Rotor diameter | Vehicle-dependent | 14 inches |
| Rotor construction | Vehicle-dependent | Vented |
| Rotor surface | Usually plain or standard finish | Cross-drilled and slotted |
| Caliper material | Common cast construction | Forged billet aluminum |
| Pad loading | Standard piston arrangement | Staggered six-piston layout |
| Track suitability | Application-dependent | Suitable for demanding street and track use when correctly configured |
| Parking brake | Vehicle-dependent | Drum-in-hat provision |
| Wheel requirement | Vehicle-dependent | 18-inch minimum recommended |
For help selecting the correct setup, read how to choose a performance brake kit and how to measure brake caliper and wheel clearance.
Wheel clearance and fitment
An 18-inch or larger wheel is recommended, but wheel diameter alone does not guarantee clearance. The inner barrel shape, spoke design, offset, hub configuration, axle type, and wheel manufacturer can all affect caliper clearance.
Before purchasing, check:
- Wheel diameter and inner-barrel clearance
- Spoke-to-caliper clearance
- Rotor and hub compatibility
- Rear axle configuration
- Parking-brake compatibility
- Brake-line routing
- Vehicle-specific Baer fitment requirements
This system is not designed for use with an IRS axle. Verify your vehicle’s axle configuration and compare it with the manufacturer’s fitment information before ordering.
Need help confirming compatibility? Contact our brake-system specialists with your vehicle year, make, model, axle type, wheel specifications, and current brake setup.
Installation and safety information
Brake-system installation should be performed by a qualified technician familiar with high-performance brake components. After installation:
- Inspect all brake hoses and fittings for correct routing.
- Torque fasteners according to the applicable installation instructions.
- Bleed the hydraulic system using the correct brake fluid.
- Check for leaks and verify pedal firmness.
- Confirm wheel and caliper clearance.
- Test the vehicle at low speed in a controlled area.
- Bed the rotors and pads according to the recommended procedure.
Do not drive the vehicle if the pedal feels soft, brake fluid is leaking, or any component interferes with the wheel or suspension.
Recommended blog posts for internal linking
Create these supporting articles and link them naturally to this product page:
- Baer Brakes vs. Wilwood: Which Performance Brake System Is Right for Your Build?
Link from the caliper comparison section. - How to Choose a 14-Inch Rear Brake Kit
Link from the rotor and thermal-capacity section. - Six-Piston Brake Calipers Explained: Benefits, Limitations, and Applications
Link from the Monoblock caliper section. - How to Measure Wheel and Brake Caliper Clearance
Link from the fitment section. - Cross-Drilled vs. Slotted Brake Rotors: Which Is Better?
Link from the rotor description. - How to Bed Performance Brake Pads and Rotors
Link from the ceramic pad and installation sections. - How to Match Front and Rear Brake Kits
Link from the brake-bias and complete-system sections. - Baer Brake Kit Reviews: What Should You Look for Before Buying?
Link from the product-quality and E-E-A-T section.
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