2nd Generation ST-40 Caliper by STOPTECH!
11-19-03, 05:44 PM
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2nd Generation ST-40 Caliper by STOPTECH!
Pretty damn sweet.......!!!
For: Immediate Release
Date: November 17, 2003
Torrance, CA… STOPTECH LLC announces immediate availability of the next generation ST-40 caliper, the ST-40 Generation-II.
The ST-40 Gen-II caliper is produced using a squeeze-forged process, a leading manufacturing technology. The result is a more consistent product with more strength and durability than the previous generation. In addition, the process improves fatigue resistance and provides for better seal life. The ST-40 Gen-II also offers a center inlet with the ability to lock-in the banjo orientation, a primary OEM feature. The new caliper is available in 28mm, 32mm and 35mm wide versions.
The Gen-II is assembled using dacramet bolts that eliminate hydrogen embrittlement, a potential defect with conventionally plated bolts. They offer better resistance to corrosion and are more environmentally friendly as opposed to heavy metal coatings. In addition, a dry graphite lube is applied for precise high torque setting of the bolts. The cross-over tube features improved resistance to corrosion by 8-10 fold and utilizes insulation to resist vibration.
The redesigned caliper strengthening bridge perfectly integrates with the caliper housing. The bridge virtually eliminates caliper deflection and offers less vibration, noise and pad taper. In a test of 25 leading caliper models, each caliper was subjected to the same pressures and its deflection measured. The results clearly show that the ST-40 Gen-II is the stiffest caliper available. The new bridge also retains the unique air channel designed to help air flow through the retainer and increase cooling.
The refined shape of the new Gen-II caliper has increased clearance to wheel hub and to the wheel spoke. The ST-40 Gen-II can use 11 different piston diameters, enabling more piston combinations than the previous ST-40 or any other brake manufacturer. StopTech uses the different available combinations of piston sizes to best match the target vehicle’s master cylinder for optimum force application and brake modulation. All standard caliper configurations feature differential bores to minimize pad taper. The pistons are hard-anodized aluminum that expand at the same rate as the caliper body and provide resistance to heat transference. Dust boots are standard and the ST-40 uses pressure seals that are designed to retract the pistons insuring no off-brake-disc drag.
The ST40 uses FMSI # 372 which is readily available in race and street frictions. The pads also have provisions for a pad wear sensor available from StopTech.
StopTech LLC, located in Torrance, California, manufactures high performance brake systems and components for production and production-based racecars. The company is the leader in Balanced Brake Systems for production cars and has two patents in basic brake technology and two others pending. StopTech has a worldwide network of resellers.
Date: November 17, 2003
Torrance, CA… STOPTECH LLC announces immediate availability of the next generation ST-40 caliper, the ST-40 Generation-II.
The ST-40 Gen-II caliper is produced using a squeeze-forged process, a leading manufacturing technology. The result is a more consistent product with more strength and durability than the previous generation. In addition, the process improves fatigue resistance and provides for better seal life. The ST-40 Gen-II also offers a center inlet with the ability to lock-in the banjo orientation, a primary OEM feature. The new caliper is available in 28mm, 32mm and 35mm wide versions.
The Gen-II is assembled using dacramet bolts that eliminate hydrogen embrittlement, a potential defect with conventionally plated bolts. They offer better resistance to corrosion and are more environmentally friendly as opposed to heavy metal coatings. In addition, a dry graphite lube is applied for precise high torque setting of the bolts. The cross-over tube features improved resistance to corrosion by 8-10 fold and utilizes insulation to resist vibration.
The redesigned caliper strengthening bridge perfectly integrates with the caliper housing. The bridge virtually eliminates caliper deflection and offers less vibration, noise and pad taper. In a test of 25 leading caliper models, each caliper was subjected to the same pressures and its deflection measured. The results clearly show that the ST-40 Gen-II is the stiffest caliper available. The new bridge also retains the unique air channel designed to help air flow through the retainer and increase cooling.
The refined shape of the new Gen-II caliper has increased clearance to wheel hub and to the wheel spoke. The ST-40 Gen-II can use 11 different piston diameters, enabling more piston combinations than the previous ST-40 or any other brake manufacturer. StopTech uses the different available combinations of piston sizes to best match the target vehicle’s master cylinder for optimum force application and brake modulation. All standard caliper configurations feature differential bores to minimize pad taper. The pistons are hard-anodized aluminum that expand at the same rate as the caliper body and provide resistance to heat transference. Dust boots are standard and the ST-40 uses pressure seals that are designed to retract the pistons insuring no off-brake-disc drag.
The ST40 uses FMSI # 372 which is readily available in race and street frictions. The pads also have provisions for a pad wear sensor available from StopTech.
StopTech LLC, located in Torrance, California, manufactures high performance brake systems and components for production and production-based racecars. The company is the leader in Balanced Brake Systems for production cars and has two patents in basic brake technology and two others pending. StopTech has a worldwide network of resellers.
11-20-03, 02:58 AM
#4
Search Function Inc.
Interesring claim. I wonder if Brembos and AP higher models of Big Brake Kits were included in this test?
Cool to know that they work on improvements though.
Cool to know that they work on improvements though.
11-20-03, 09:15 AM
#5
Lexus Champion
The guys at StopTech are serious about this stuff... I have the new-generation calipers on my GS4, and the performance of their 355mm kit is awesome. Just breathe on the brake pedal and the car stops- under heavy braking the deceleration is so powerful it feels like the ABS should engage- they are that good!
StopTech developed this new process after learning that a certain supplier was having porosity issues in the caliper castings- this porosity would actually allow the brake fluid to leak (this supplier still provides these castings to a competing brand). StopTech pressure-tests every caliper to ensure this will never be an issue.
I like the StopTech staff- they have a similar philosophy to HRE: "Innovate, don't imitate"
StopTech developed this new process after learning that a certain supplier was having porosity issues in the caliper castings- this porosity would actually allow the brake fluid to leak (this supplier still provides these castings to a competing brand). StopTech pressure-tests every caliper to ensure this will never be an issue.
I like the StopTech staff- they have a similar philosophy to HRE: "Innovate, don't imitate"
11-20-03, 02:35 PM
#6
Search Function Inc.
StopTech are probably good brakes but I like Rotora better as a company. Every time I had an interaction with any StopTech representative, I walked off with negative feeling towards the company.
11-21-03, 07:34 AM
#7
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Hmmmmmm? That's surprising. I've dealt with those guys on numerous occassion and sent them plenty o' refferals. Always with positive feedback! 
I will echo what SoCalSC4 has said above:
It is common knowledge throuout many car forums of guys who are really tracking their cars, preffer StopTech systems. I for one don't "track" my car, BUT..............I have definitely put these brakes to the test on the Tollway and on other occassions though.
And they are the TRUTH! 
I will echo what SoCalSC4 has said above:
It is common knowledge throuout many car forums of guys who are really tracking their cars, preffer StopTech systems. I for one don't "track" my car, BUT..............I have definitely put these brakes to the test on the Tollway and on other occassions though.
And they are the TRUTH!
Last edited by TXSTYLE; 11-21-03 at 07:35 AM.
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11-21-03, 08:16 PM
#8
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Originally posted by SoCalSC4
The guys at StopTech are serious about this stuff... I have the new-generation calipers on my GS4, and the performance of their 355mm kit is awesome. Just breathe on the brake pedal and the car stops- under heavy braking the deceleration is so powerful it feels like the ABS should engage- they are that good!
The guys at StopTech are serious about this stuff... I have the new-generation calipers on my GS4, and the performance of their 355mm kit is awesome. Just breathe on the brake pedal and the car stops- under heavy braking the deceleration is so powerful it feels like the ABS should engage- they are that good!
And I too give a huge
to StopTech - they're AWESOME.
11-21-03, 09:49 PM
#10
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iTrader: (20)
Originally posted by Neo
You you got the second gen Bit. StopTech has been shipping the second gen since June.
You you got the second gen Bit. StopTech has been shipping the second gen since June.
It really is amazing... but then, you know!
Are yours on your car??
11-21-03, 10:44 PM
#12
Lexus Champion
You you got the second gen Bit. StopTech has been shipping the second gen since June.
Double whew! I've been reading this thread and grinding my teeth thinking I should have done a bit more discovery before diving into the purchase.
Originally posted by bitkahuna
Cool! Thanks for the info. (Phew)
Cool! Thanks for the info. (Phew)
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chenxingha
RX - 1st Gen (1999-2003)
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