M40 CNC Forged Four-Piston Integrated Motorcycle Brake Caliper – 100mm

Upgrade your motorcycle's braking system with the M40 CNC Forged Four-Piston Integrated Brake Caliper. Precision-machined from high-grade forged aluminum, this 100mm caliper delivers consistent, powerful braking performance with excellent heat dissipation — keeping your ride controlled and responsive even under demanding conditions.

Engineered for performance riders and custom motorcycle builders alike, this integrated caliper features a four-piston design that distributes clamping force evenly across the brake pad surface. The high-radiation fin design ensures optimal thermal management, while the CNC-forged construction provides exceptional rigidity and durability compared to cast alternatives.

Key Features

Four-Piston Design: Even clamping force for consistent, fade-resistant braking performance
CNC Forged Construction: Precision-machined from forged aluminum for superior strength and lightweight durability
100mm Integrated Body: One-piece design eliminates flex for sharper braking response
High-Radiation Fin Design: Enhanced heat dissipation keeps caliper temperatures in check during aggressive riding
Custom-Ready Fitment: Ideal for custom builds, modified bikes, and performance upgrades
Durable Finish: Corrosion-resistant surface treatment for long-lasting good looks

Specifications

Model: M40
Piston Configuration: Four-Piston (Integrated)
Disc Size Compatibility: 100mm
Construction: CNC Forged Aluminum
Application: Motorcycle custom/modified brake systems
Country of Origin: Made in China

Why Upgrade to a Forged Caliper?

Forged aluminum calipers offer a superior strength-to-weight ratio compared to cast units. The forging process aligns the grain structure of the metal, resulting in a component that resists cracking and deformation under the high hydraulic pressures typical of motorcycle braking systems. Paired with a four-piston layout, the M40 caliper provides a noticeable improvement in modulation and stopping power over OEM single or dual-piston alternatives.

For more information on motorcycle braking system safety and maintenance standards, visit the U.S. Consumer Product Safety Commission (CPSC).

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Frequently Asked Questions

Q: What motorcycles is the M40 four-piston brake caliper compatible with?

A: The M40 CNC forged four-piston caliper is designed primarily for custom and modified motorcycle builds with 100mm disc compatibility. It is a universal-style caliper, so fitment should always be verified against your specific frame, fork, and disc specifications before installation. We recommend consulting a qualified mechanic for custom fitment.

Q: What material is the M40 caliper made from?

A: The M40 caliper is CNC-machined from forged aluminum, which offers an excellent strength-to-weight ratio, greater structural integrity than cast aluminum, and resistance to the high hydraulic pressures found in motorcycle braking systems.

Q: Why does a four-piston caliper perform better than a single or dual-piston caliper?

A: A four-piston caliper applies clamping force more evenly across the full surface of the brake pad, resulting in more consistent pad wear, better modulation, and improved overall braking performance — especially during extended or high-speed riding sessions where heat buildup can be an issue.

Q: How does the high-radiation fin design help during riding?

A: The high-radiation fin design increases the surface area of the caliper body, allowing heat generated during braking to dissipate into the surrounding air more efficiently. This helps maintain consistent braking performance and extends the service life of both the caliper and brake pads.