• Shorter Stopping Distances
• Better Brake Modulation
• Firmer Brake Pedal
• Less Brake Fade

Feature-Benefit Summary:

• Balanced Brake Upgrades™ with optimum brake bias offer the shortest stopping distance with the best pedal feel
• Our patented AeroRotors® with the best airflow available result in better cooling, less fade and longer rotor and pad life
• The stiffest aftermarket calipers with patented bridge result in better clamping under hard braking and less pad taper
• Track testing of new applications ensures optimum performance

StopTech has incorporated several design innovations to improve rotor airflow, cooling and heat capacity. The ability to absorb and dissipate heat is essential to brake system performance.

Benefits of Improved Airflow

• Less fade
• Longer rotor and pad life
• Beter performance

Using finite element analysis (FEA) modeling software, we have designed a bolt-in bridge strong enough to stop distortion without sacrificing cooling through the top of the caliper. Distortion is virtually eliminated. The fully forged StopTech ST-40 caliper has the least flex of any tested aftermarket and OE caliper. The air channel in the bridge is designed to help air flow through the retainer, resulting in better cooling.

Benefits of Stiffer Calipers:

• Better performance with less vibration, noise and pad taper
• Better pedal feel under extreme braking conditions
• No radial pad tape

ST-40 & ST-45 - 4 PISTON CALIPER FOR FRONT & REAR

StopTech is a serious company that puts great emphasis on quality materials and suppliers. The high standard of our parts and manufacturing processes are part of what makes StopTech brakes the best value in the market today.

Calipers

StopTech's ST-40 and ST-60 calipers are fully forged for optimal strength and light weight. All caliper finish machining (such as piston bores sized correctly for the application) and assembly/testing is done in their Southern California facility. StopTech tests every single finished caliper to 2800 psi using brake fluid on a special test bench designed by StopTech engineers.

Rotors

AeroRotors are made using StopTech's patented vane design and their proprietary cast iron formula, which was specified with durability in mind. StopTech has had several sets of rotors run entire 24 hour races on winning cars. StopTech did extensive testing before settling on their final top-secret formula. To test rotor durability, they rented the California Speedway and ran a heavily weighted down car with StopTech rotors on one side and a competitor's rotors on the other. In this test, StopTech rotors were approximately twice as durable as the competitive rotor.

Hats and Brackets

StopTech's hats and brackets are made with a special type of billet aluminum that was designed for the AeroSpace industry in the United States. The German TÜV were so impressed with the durability of these parts during testing that they replicated the bracket and repeated the test with a steel imitation of StopTech's part. The steel version failed early.

Hats and brackets are machined to ISO standards at StopTech's manufacturing facility in Torrance, California, using the latest CNC machines that feature active tooling.

Stainless Steel Brake Lines

StopTech makes their own stainless steel brake lines in Southern California. StopTech is a DOT (U.S. Department of Transportation) registered supplier of Stainless Steel Brake Lines. Line material and fittings are all made from the highest quality parts available. Lines feature a clear abrasion-resistant cover for maximum protection against chaffing. Necessary quality control procedures are in place to ensure lines are the correct length, etc. Every fully assembled StopTech Stainless Steel Brake Line is tested to a pressure of 4,500 PSI.

Quality Assurance of Parts

StopTech was the first aftermarket brake upgrade company to offer Balanced Brake Upgrades and is the only company offering optimized kits for over 277 applications. To our knowledge, no other brake upgrade manufacturer takes these design and test steps.

Highly Structured Test Process of New Applications Ensures Optimum Performance

After measuring a car for physical dimensions and calculating the correct piston sizes, StopTech builds a prototype kit and takes it out to the track. StopTech first tests the stock brakes, then tests the exact same car outfitted with a newly designed StopTech Big Brake Kit. StopTech performs the following series of stops, measuring deceleration, stopping distance and rotor temperature for each stop:

1. Series of stops with increasing speed:

• 10 Stops from 60mph
• 6 Stops from 80mph
• 4 Stops from 100mph

2. 1 high speed stop with ABS disabled to see if the front or rear brakes lock up prematurely.

3. Modified J-Turn test to determine how the brakes interact with ABS and traction control. This sophisticated test is used by engineers who design ABS systems.

Most cars require upgraded wheels to fit over a big brake kit, but some kits do fit in stock wheels. General guidelines for wheel fitment are below, but more important than the diameter of the wheel is the space between the face of the caliper and the inside of the wheel spokes. Wheel width and offset have nothing to do with this clearance area. Clearance is strictly a function of the spoke design. Even if the diameter of your wheel is sufficient, we still recommend that you check fitment.

Each Kit Includes:

• Calipers
• 2 piece floating directional AeroRotors with hats (pre-assembled)
• Stainless steel brake lines
• Caliper mounting brackets
• Street performance pads