SKU: 35279383009

StopTech 355mm ST-40 Front Big Brake Kit for VW Mk5 | Mk6 Golf | GTi | Jetta | A3 (NLA)

$1393.20 $1548.00
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Ships within 48 hours · Estimated delivery Jul 23 - Jul 28

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Description

StopTech 355mm ST-40 Front Big Brake Kit for VW Mk5 | Mk6 Golf | GTi | Jetta | A3 (NLA)StopTech Big Brake Kits are the ultimate high performance brake upgrades, giving vehicles that supercar performance, look and feel. StopTech Big Brake Kits exceed stock performance in two key areas: First, larger rotors increase heat capacity, allowing a driver to brake harder stop after stop with reduced chance of fade. Second, stiffer calipers and stainless steel lines reduce system compliance, providing consistent pedal feel and confidence

StopTech Big Brake Kits are the ultimate high performance brake upgrades, giving vehicles that supercar performance, look and feel.

StopTech Big Brake Kits exceed stock performance in two key areas:
  • First, larger rotors increase heat capacity, allowing a driver to brake harder stop-after-stop with reduced chance of fade.
  • Second, stiffer calipers and stainless steel lines reduce system compliance, providing consistent pedal feel and confidence-inspiring responsiveness.

The key, however, is to increase heat capacity and reduce compliance without upsetting a vehicle's stock front-to-rear brake torque ratio. That is why StopTech developed the Balanced Brake Upgradedesign philosophy, which precisely apportions front and rear braking resources while factoring in vehicle weight transfer under braking.

Every StopTech Balanced Big Brake Kit is engineered to produce that optimal balance usingcaliper bores and pistons specifically selected and tested for each vehicle application. This is what sets StopTech apart from off-the-shelf solutions.

In contrast, a brake upgrade that adds too much front torque (as many do), will reduce your car's ability to maximize the traction available from all four tires, robbing you of performance. In addition, a system that uses too many pistons or pistons that are too large will make the brake pedal much more difficult to modulate, limiting a driver's control of brake input.



Features and Benefits:
  • Balanced Brake Upgrades with optimum brake bias offer the shortest stopping distance with the best pedal feel.
  • Patented AeroRotors offer the best airflow available for better cooling, less fade and longer rotor and pad life.
  • StopTech provides the stiffest fully-forged aftermarket calipers with patented, removable bridges that provide better clamping under hard braking and less pad taper.
  • StopTech Big Brake Kit components are made in the USA in a 70,000 square foot California manufacturing, engineering, and R&D center.


The Stiffest, Fully Forged 2-piece, Opposed Piston Calipers


StopTech 2-piece calipers have the lowest amount of flex and deflection among 25 of the leading caliper models (including some monoblocks) from well-known manufacturers. This is accomplished using StopTech's patented bolt-in bridge, which is strong enough to stop distortion without sacrificing cooling through the top of the caliper.

The standard StopTech caliper finish is a glossy high temperature paint available in one of six different colors - red, black, silver, blue and yellow. Trophy Sport and Trophy Race Big Brake Kits use weight-optimized STR calipers finished with a deep natural anodized coating that resists fading and discoloration at extreme temperatures.

Stiffer Calipers Offer:
  • Less vibration
  • Less Noise
  • Better pedal feel under extreme braking conditions
  • Faster braking response
  • Less pad taper


Patented AeroRotors and AeroHats that offer up to 80% greater airflow

StopTech has developed several design innovations to improve rotor airflow. The patented 2-piece AeroRotors push more air thanks to curved, airfoil-shaped vanes and an air channel that widens at the trailing edge of the vanes.

StopTech aluminum AeroHats are lighter, and feature directional stand-offs between the rotor and mounting hat that increase airflow to the (hotter) outside face of the rotor by over 15%.

Benefits of StopTech AeroRotors and AeroHats:
  • Specifically engineered and patented AeroVanes for optimum cooling
  • Optimized to provide even performance and consistent feedback
  • Longer pad and rotor life

Hard Anodized 6061-T6 Billet aluminum Mounting Brackets with Stainless Steel Studs

Application-specific hardware that is stronger than most competitors, with studs instead of the more commonly used bolts and hard anodized aluminum billet composition.

  • Hard anodized billet aluminum mounting brackets
  • Stainless steel studs secured with set screws for strength and durability
  • Fully machined aluminum or steel that is precise and strong
  • Application specific design for precise and proper fitment
  • All necessary hardware for easy installation

StopTech Stainless Steel Brake Line Kits

Braided stainless steel lines reduce system compliance and improve brake pedal feel and modulation. StopTech's Stainless Steel Brake Lines are D.O.T. compliant and designed to fit your vehicle.

  • Stainless steel braiding for lower compliance and extra protection
  • Provides quicker response
  • Firmer pedal feel
  • A variety of fittings for hundreds of applications
  • All necessary brackets and fasteners for easy installation
  • Better brake modulation
  • D.O.T. compliant

StopTech Street Performance Brake Pads

StopTech Street Performance Brake Pads are included in all Big Brake Kits besides the track-only Trophy Race Big Brake Kits. StopTech Street Performance Pads are intended for high performance street driving as well as light duty track use.

  • Aggressive pad for high performance street driving
  • Para-aramid composites provide linear response regardless of pad temperature
  • 100% positive molded for uniform friction material density
  • Low dust formulation is rotor friendly and leaves wheels cleaner
  • Scorched to raise initial cold effectiveness and ease bed-in
  • 100% Asbestos-free formulas

Required Pre-Purchase Fitment Check: Vehicle-specific wheel fitment templates for StopTech Big Brake Kits

To help identify whether your existing wheels will fit over a StopTech big brake kit, download the wheel fitment template for your vehicle and follow the instructions to verify clearance before you purchase. While wheel clearance is completely dependent on the diameter, offset and spoke design of your wheels, a general guideline is that StopTech kits usually require the following:

  • 328mm rotor (12.9") - minimum 17" wheel
  • 332mm rotor (13.1") - minimum 17" wheel
  • 355mm rotor (14") - minimum 18" wheel
  • 380mm rotor (15") - minimum 19" wheel

View the wheel fitment template here

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 35279383009

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4.2 ★★★★★
Based on 7 reviews
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Product Reviews
B
Verified Purchase
Brendon MO
Birmingham, US
★★★★★ 5
K and N is the best
Size: CA12290-Premium
In my opinion, you can’t buy a better air filter. Been buying them for all my cars since the 1990s.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 8, 2024
S
Verified Purchase
Steve
San Leandro, US
★★★★★ 2
Does not fit 2023 Honda Accord as it says in the title
Size: CA12290-Premium, Size: CA12290-Premium
Does not fit 2023 Honda Accord as it says in the title. Seems like good quality otherwise.
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Reviewed in the United States on October 3, 2024
P
Verified Purchase
Philip and Lucy
Belleville, US
★★★★★ 5
Fits Toyota 2010 FJ cruiser
Perfect fit for a Toyota 2010 FJ cruiser. Install might have been the easiest cabin filter I've done in any car that new. Remove glove box, pull out the cover and replace it. Fits great and takes odors out from it sitting for 6 months in the driveway. No notice to less airflow when on any level of fan speed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
S
Verified Purchase
S
Cuba, US
★★★★★ 5
Comparison with POTAUTO filter: Very similar but cheaper
I bought a POTAUTO MAP 1033C and EPAuto CP846 cabin air filter to compare them for use in my 09 Legacy (gen 4). They both seemed comparable and are cheaper than most other, similar filters, though the POTAUTO was and still is ~33% more expensive than the EPAuto. Both seem built well-enough, considering they're only being used as relatively low-flow cabin filters. That said, the EPAuto is slightly better, mainly due to the white trim piece being unattached along one side on the bottom of the POTAUTO filter. Almost certainly nothing that will affect its performance or longevity, but it is interesting considering it's the more expensive of the two. However, it must be kept in mind that this is an incredibly small sample size. In one of my very scientific tests (/s), I held them up side by side and looked through them toward the sun (obviously being careful) to judge thickness/density and uniformity. Neither had any thin spots that I noticed, and they were pretty similar overall. One of them blocked slightly more light than the other, indicating more filtration, but I unfortunately don't remember which one. I feel like it was the EPAuto, but I don't really want to speculate as I could very well be wrong. What I do remember is that the difference was so minor that all else being equal, it wouldn't justify the cost difference between the two. In other words, even if the POTAUTO were the slightly better one, it wouldn't be worth the extra few dollars for the minimal amount of extra filtration. In another test, I compared the filters to each other and the old filter (which I'm pretty sure was OEM, but certainly not a charcoal filter, so it was significantly thinner) by blowing air from a compressor through them. I held the nozzle at roughly the same distance from each on one side of the filters, and I held my other hand at roughly the same distance from each on the other side. The old filter, unsurprisingly, let much more air flow through. Both charcoal filters were much more restrictive due to their extra thickness, leading me to feel much less air coming through. Both were roughly the same. Both filters also held up just fine to the strong blasts of air. I bought a couple other filters that I was going to cut to fit to use one or both with these filters as a pre-filter and/or additional charcoal layer. After the airflow test, I decided against this, as these are a lot more restrictive than OEM already, and I didn't want to push it, since that could at best cause issues with getting good airflow into the car, and at worst could damage the blower. If not for the fact many, many people have been using these and similar filters for a long time without apparent issue caused by this, I would hesitate to even use these. I haven't noticed a decrease in the airflow, but it's doubtful I would since I rarely turn the fan up past the first couple settings (usually have it on the first) if I have it running at all, and I have the center vents pulled out (to access the inside of the dash) which causes the flow at the vents to be reduced slightly. TL;DR - Both the POTAUTO and EPAuto charcoal filters appear to be a good choice, with the EPAuto having a slight edge on build quality (based on my limited sample size of one each) and a cheaper price. Filtration appears to be very similar between the two, certainly not enough of a difference to warrant the extra price for the POTAUTO over the EPAuto. Flow is significantly more restrictive than OEM filter but doesn't appear to be an issue. I give the EPAuto 5 stars and the POTAUTO 4 stars, only because the value of the POTAUTO is a good bit less (very similar or possibly even inferior quality for 33% more money). I can't speak to their longevity or performance, but I don't imagine either should prove to be an issue. -------------------------------------------------- As a side note relating specifically to the Legacy: replacing the cabin filter in this car is a PITA. It's not overly difficult per se, but a serious pain and certainly not something you're going to do when you have a spare few minutes. I'd rate it probably around a 3.5/10 in difficulty and a 7/10 for annoyance. While you can sort of access it by removing the manual compartment, you can't remove the tray through that. So you need to actually take the whole glove box out, which requires removing the side panel, unhooking the string/loop that keeps it from falling all the way down, and removing a few plastic screws, which can be a bit of a pain (and apparently Subaru loves them since they're all over the car). A stubby Philips driver will be helpful. Once you have the glove box out of the way, you have to unscrew several more of those plastic screws to remove the plastic cover between the glove box and the filter. This hole is where you gain access. Be careful when removing the old filter as loose dirt and debris may fall out and make a bit of a mess. You don't really want to get any in the fan below it if you can help it. Reverse the steps to reassemble it, and remember to reattach the string. Getting the glove box back in its track can be a bit of a challenge; in my experience from doing it multiple times I've found you sort of half force it and half don't. That is, it'll likely offer some resistance even if it's lined up, so if you try to baby it you'll probably be there a while, but also play with the alignment a bit to see if you can get it without marring up the tab and the slot on the right side too much. All in all, expect to spend anywhere from 15-45 minutes on this, and make sure you have a standard length as well as a shorter or stubby Philips screwdriver. I have to say, when it comes to air filters, this car is horrible. The air intake filter is a pain to change, too--much worse than most if not all other cars I've done. -------------------------------------------------- Keywords: Subaru Legacy, fourth gen, fourth generation, 4th gen, 4th generation, 03, 04, 05, 06, 07, 08, 09, 2003, 2004, 2005, 2006, 2007, 2008, 2009
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 29, 2017
R
Verified Purchase
R
Dallas, US
★★★★★ 5
Good price on the part and 5 min install saved me $35
Fit fine in my 4th gen 4Runner took 5mins to install
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 19, 2026

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