PPR Crab Rear Disc Brake Caliper & Sintered Pads – Moto Upgrade

PPR Heat Dissipation "Crab" Brake Caliper – Rear Wheel Disc Brake Upgrade

Upgrade your motorcycle or electric motorcycle's braking system with the PPR Radiation Fin "Small Crab" Rear Disc Brake Caliper Assembly. Built from precision-machined 6061 aluminum alloy, this dual-piston caliper delivers smooth, progressive braking force, long-lasting durability, and a sleek mechanical aesthetic — all in a compact, bolt-on design that requires zero modifications to your existing setup. Made in Mainland China.

7 Reasons to Upgrade to the PPR Crab Caliper

1. 3D Tooth-Shaped Heat Dissipation Fins

The integrated fin structure dramatically increases the surface area exposed to airflow, rapidly drawing heat away from the caliper during prolonged descents or repeated heavy braking. Brake temperature stays controlled, so your braking force stays consistent and strong — no fade, no surprises.

2. CNC Precision 6061 Aluminum Alloy Body

Every caliper is CNC-machined from a solid block of 6061 aluminum alloy, then hard-anodized for corrosion resistance and a finish that won't chip or fade. The thick-walled shell handles high hydraulic pressure and rough road vibration without deforming or leaking.

3. Dual-Piston Synchronous Clamping

Twin pistons clamp the brake disc with perfectly balanced force, eliminating uneven or one-sided pad wear. The result is a linear, graduated feel — light pressure for gentle slowdowns, firm pressure for confident stops — giving both new and experienced riders precise control at all times.

4. Pre-Installed Sintered Brake Pads Included

High-performance metal sintered brake pads come factory-fitted, so you can bolt the assembly on and ride immediately. Sintered pads resist heat and moisture far better than semi-metallic alternatives, maintaining a stable friction coefficient even on wet, muddy, or gritty roads. Service life is significantly longer than standard pads.

5. Multi-Layer Oil Seal for Smooth Piston Return

A precision multi-layer seal system prevents oil leakage under high hydraulic pressure. When you release the lever, the pistons retract cleanly and automatically — no pad drag on the disc, no energy loss, no premature disc wear.

6. Compact Bolt-On Design – No Grinding, No Adapters

The slim "small crab" profile clears wheels and suspension components without interference. Standard mounting hole spacing ensures compatibility with a wide range of electric motorcycles and motorcycles. No custom adapters or machining needed — a genuine plug-and-play performance upgrade.

7. Aggressive Mechanical Styling

The glossy black anodized shell, two-color PPR embossed logo, and gold accent fastener screws give your build a purposeful, high-end look. Performance and aesthetics upgraded in a single installation.

Product Specifications

• Model: JK26 / PPR Crab Caliper
• Material: 6061 Aluminum Alloy (CNC Machined, Hard Anodized)
• Piston Configuration: Dual Piston (Synchronous Opposing)
• Brake Pad Type: Metal Sintered (Pre-installed)
• Application: Rear Wheel Disc Brake – Electric Motorcycles & Motorcycles
• Fitment: Universal Standard Mounting Holes
• Country of Origin: Mainland China

Compatible With

Suitable for most electric motorcycles and motorcycles with standard rear disc brake caliper mounting positions. No custom adapter bracket required.

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For authoritative guidance on motorcycle safety equipment and braking systems, refer to the U.S. Consumer Product Safety Commission (CPSC).

Frequently Asked Questions

Q: Is the PPR Crab Brake Caliper compatible with my motorcycle or electric motorcycle?

A: The PPR Crab Caliper features standard mounting hole spacing that is compatible with the vast majority of electric motorcycles and conventional motorcycles using a rear disc brake system. No grinding, custom adapters, or extra bracket codes are required — it is designed for direct, non-destructive bolt-on fitment.

Q: Do sintered brake pads perform better than semi-metallic pads in wet conditions?

A: Yes. Sintered (fully metallic) brake pads maintain a more stable friction coefficient across a wider range of conditions, including rain, mud, and grit. Unlike semi-metallic or organic pads, sintered pads are less susceptible to heat fade and moisture absorption, making them a preferred choice for demanding or variable riding conditions. They also tend to last significantly longer overall.

Q: Will the heat dissipation fins actually keep braking performance consistent on long downhill runs?

A: The tooth-shaped 3D fins on the caliper shell greatly increase the surface area in contact with moving air, allowing heat to dissipate faster during sustained or repeated braking. This helps prevent the temperature spike that causes brake fade, so your stopping power remains linear and responsive throughout a long descent or intense riding session.

Q: Does this caliper come with brake pads, or do I need to purchase them separately?

A: High-performance metal sintered brake pads are pre-installed at the factory. The assembly arrives ready to mount — simply install the caliper on your rear disc brake mount and you're ready to ride without purchasing or fitting additional pads.