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SFZ-4

OVERVIEW

The SFZ Series of the luxury premium line with an excellent performance is
designed to be lightweight and to be equipped with
optimum durability using forged aluminum alloys.!
This model has an elegant and slim design that is
created by high-tech 3-D designs and precision processing,
and it drastically brakes from the vehicle’s space limit.
The brake system is applicable to the front and the rear and a
4-piston caliper is applied for a high braking performance.
Experience Stolz’s outstanding technology through an excellent braking performance with an elegant design.

STOLZ SYSTEM

System configuration :
  1. Caliper (4-piston caliper)
  2. Ultralight disc rotor (350 mm)
  3. Bracket
  4. High-performance pad
※ Select a product based on the weight of a vehicle, the driver’s orientation, and other factors

Caliper color :

Production and Material
Caliper Production / Material Piston Production / Material Disc Production / Material Bracket Production / Material
Machining Center (MCT)
1800t forged aluminum alloy
Machining Center (MCT)
1800t forged aluminum alloy
CNC Lathe Machining Center (MCT)
Aluminum alloy, alloy cast-iron
CNC Lathe Machining Center (MCT)
Aluminum alloy
Caliper finish Piston finish Piston number Disc type
Anodizing
Poudrage Paint
Nickel Plated
Anodizing
4 Drilled
DIFFERENTIATION
Caliper material
Designed to be stiff and lightweight, the STOLZ system uses forged aluminumalloy for set components and the STOLZ caliper is a double-acting (both side) cylinder type.
MCT machining that uses forged billet
It is formed through MCT Machining Center. Differentiates with casting production which is an advantage of low production cost (makes the molten material pour into the die).
It is 100% compatible with all electronic devices including genuine ABS (OEM)
Braking performance
It provides a complete braking control
before the antilock brake system (ABS) is activated.
It also provides a braking force that depends on the
depth of the pedal and delays reaching the critical point.
Air radiation fin

A stepped air radiation fin that considers heat dissipation

SFZ Exclusive case
When you choose the Stolz brake SFZ Series, which aims for nothing but the best, you will receive it in an exclusive case.

CALIPER

  • The Stolz brake is designed for the maximum extreme conditions of the caliper, and is optimized to distribute and transmit forces based on research data that was accumulated for many years through structural analysis depending on the caliper’s specifications. It is also made lightweight by reducing or minimizing parts that donot receive forces.
  • It prevents thermal storage in the brake system, and maximizes safety and heat dissipation through thermal and flow analysis that considers all types of heat including heat that is released from a disc, heat that is transmitted from the pad to the caliper, and heat that is transmitted from the caliper to the brake fluid.
  • It is scientifically and delicately machined to lower frictional heat conduction, anduses forged aluminum alloy pistons for the maximum pedal effort.
  • The machining process of the MCT that uses a forged billet,Stolz’s unique identity, and a stepped air radiation fin that considers heat dissipationare used to increase the cooling efficiency.The triple groove dust seal is usedto prevent the entry of foreign substances.
TECHNICAL SKILLS
The caliper body is made of aluminum alloys, and it is optimally designed to keep a balance of force based on maximum stiffness. Forged aluminum alloys go through an ultraprecision machining and forming through the Machining Center Tooling System (MCT).

A stepped air radiation fin that considers heat dissipation

Most genuine calipers (OEM) are single-acting cylinder systems that transmit power only to one direction. They have an advantage of low production cost but they are heavy, limited in size for each cylinder, and have difficulty in delivering power evenly to the pads, resulting in reduced braking performance.

The STOLZ system resolved these drawbacks by adopting double-acting (both sides) cylinder type. It uses forged aluminum alloy and it can satisfy the requirements for lightweight, hardness, and performance.

BRAKE PAD

Stolz launches a new brake pad for the safety and convenience of customers

The Stolz brake pad is manufactured based on confidence on highperformance brakes, and shows a powerful braking force and possesses continuous technical development and the best quality.

  • Brake :
    It maintains the constant friction coefficient for repetitive braking at high temperature and has an excellent safety
  • Noise :
    Minimize noise by installing a vibrational absorption plate
  • Cleanliness :
    Non-Asbestos Organic (NAO) compound technology, which minimizes the contents of steel (the causes of brake noise and dust), is applied to the pad.
  • Disc rotor :
    Minimize disc damages that are caused by brake friction materials.
Official noise test report

Official braking performance test report
Pad size

BRAKET

It is optimally designed for each model using the same forged aluminum alloys that were used in the caliper
It is also designed to withstand about 1.5 times of fatigue failure and the maximum stiffness.
The curved surfaces of the 3-D design are formed by the MCT
with an excellent machining accuracy to minimize the interference of the car’s body structure
SPRING :
It absorbs vibrations that were caused by the operation of the caliper, and the special spring washer is mounted to prevent the loosening of the bolt.
Stolz’s products, which have a laser-engraved logo, are distinct from other products.

ULTRA LIGHT DISC

About
An ultralight disc rotor with maximum stiffness and minimum weight
It is designed as a two-piece type (disc plate and bell housing) that is to be controlled with the force that is applied to the caliper during braking.
The aerodynamic system (curved lines are selected instead of straight lines) is applied during the design of the disc rotor rib, and the inner disc pin is also designed for a smooth fluid flow.
Stainless steel pins and oval pins are used to tighten the bell housing and the disc plate. These pins not only balance the stress that is applied to the disc and the bell housing with different materials but also prevent the transfer of frictional heat to the bell housing to reduce deformation and increase durability.

Stolz’s products, which have a laser-engraved logo, are distinct from other products.

The drilled disc rotor with an excellent heat dissipation lowers frictional heat, which is delivered to the pad and the caliper, and maintains the best performance. (Proportional to the number of holes)
Differentiation
Patent No. 10-1531105
It is a new, technology-intensive ultralight disc rotor that minimizes performance degradation against heat by applying aerodynamics to the disc rotor and the bell housing.
Design Registration No. 30-0772554
The contact area of the assembly is increased by improving the structural limits of the lightweight disc rotor while durability is increased using forged materials. The said contact area is also designed to be 1.5 times bigger, wherein the force is applied during braking in consideration of the braking properties to maximize the structural function.
Structure

ACCESSORIES

Pad
Non-Asbestos Organic (NAO) compound technology, which minimizes the contents of steel (the causes of brake noise and dust) Technology-applied pad
Piston
A structural design that maximizes heat dissipation and equally transmits hydraulic pressure using forged aluminum alloys
Caliper assembling bolt and alignment pin
Use SUS materials to prevent oxidation.
Pad accessories
Minimize vibration and noise by installing a vibrational absorption plate on the pad.
Caliper oil line accessories
Pipe, nipple, nipple cap
Dust seal
It prevents foreign substances from entering and maintains a stable hydraulic pressure.
Hydraulic brake oil
Brake Fluid DOT 4