Review Mountain Pass Performance Big Brake Kit for Model 3

Clarification

What we have learned over the years of track time with the Tesla Model 3 is that while our 365mm BBK is practiced enough for rails utilise with a standard RWD motorcar, for serious runway abuse with an AWD or AWD Performance, it but doesn't quite have enough for more than 3-4 really hot laps. The same goes for the performance brakes. They are great, but eventually, the fluid will boil as there just isn't enough rotor to take the heat abroad, even with our upgraded 2pc rotors. We also learned that the low-drag seals that help make the Model 3 then efficient lose their effectiveness after a few rail days, as they are cooked and no longer seem to take the same kind of effectiveness every bit when they were new.

For this reason, nosotros decided it was time to offer a motorsport big brake upgrade. Nosotros have been racing with StopTech calipers since 2008, using a relatively tiny ST-twoscore caliper that has seen everything from iii-hour endurance races to GTLM levels of downforce to contend with. We knew that StopTech would be an platonic partner for this upgrade. The STR-60 was the perfect caliper for the job. Information technology ticks all the boxes: depression-profile, made from a forged aluminum alloy, incredibly stiff (one of the stiffest calipers available), uses a standard pad shape, offers differential piston sizes, and uses silicone dust boots and anti-rattle clips – making the caliper suitable for daily driving. The caliper is hard anodized, which means it volition put up with heat and abuse far better than a painted or powder-coated caliper.

StopTech has done a really impressive chore with the blueprint of this caliper by using a bolt-in bridge organization. The benefit is that the span offers a massive increase in caliper stiffness while being easily removed to quickly bandy out pads. The bridge also contains anti-rattle clips that forbid the pads from making any noise. Caliper stiffness is extremely important – not simply for conviction-inspiring brake feel, merely also for the operation of the ABS system. Bosch Motorsport points out that the ABS can but work equally well equally the organization tin respond, and if a caliper is flexing, that will delay the fourth dimension information technology takes for the ABS valves to utilize and release the pad. And then a stiff caliper results in a faster acting ABS, allowing it to stay e'er close to the tire's optimal slip point. We really noticed the lockup events seemed to occur at a college frequency when comparing these brakes dorsum to back to the OE calipers. This would match upwards with Bosch Motorsport's claims.

After the caliper, we wanted to fit the largest rotor possible nether an 18″ wheel.  We knew that a 32mm wide rotor wasn't going to cutting it, so we went for the big male child – 35mm. That is 10mm wider than the factory rotor! and that is where a huge amount of cooling comes from.

This is the kind of brake setup yous would detect on a GT4 racecar, dare we even say a GT3 machine. A forged barracks aluminum machined caliper with a monstrous rotor, all that merely fits under an 18″ wheel. Yous'll encounter that most 18″ bike restriction kits are only 355mm in diameter – but nosotros were able to get all the way upwards to 368mm! The rotors are produced past the same rotor supplier that does all of our other kits (Girodisc), and they are known to produce some of the all-time rotors in the world. These discs last a LONG fourth dimension.

In November 2020 we also released a 380mm version for all of y'all that utilize nineteen″ and larger wheels. 380mm is a nifty option if you want to fill in twenty″ wheels for example. At that place is not going to exist a noticeable performance benefit from the 368 to 380 – it's mostly for looks!

35mm thick, yet only 2.5lbs heavier than a rotor 10mm narrower and 10mm smaller.

Past using such a big rotor, we are also able to give you lot a wide range of pad options. Since the caliper uses a large pad, paired with a rotor that can misemploy a mega amount of heat, it is possible for most to apply a modest sport brake pad chemical compound and potentially not have to worry almost changing pads at the rails versus on the street. The recommended sport compound pad is included with the kit. This will be suitable for most, however, for those that are driving functioning Model 3'southward at the accented limit on brake intensive tracks, full racing pads will be required.

The silicone dust boots included are rated to handle much college temperatures than rubber grit boots, and we were pleased to come across that subsequently ii runway days, one with significant long-running, the dust boots look brand new. While there a few big brake kits on the market place, it's worth request – how many companies that develop big brake kits accept actually put thousands of miles on their kits, and track tested them repeatedly earlier offering them for auction? Nosotros're not interested in merely fitting the biggest rotor we tin and making it look pretty! There accept already been some claims that we don't fully concord with from other brake suppliers – so if yous accept any questions on a competing restriction kit's claims, experience free to email us and we can give you our thoughts!

Silicone dust seals after two track days with a professional person driver. They notwithstanding expect like and experience new!

What was the end outcome? Well, these brakes are pretty not bad. The restriction pedal is noticeably firmer as soon equally you install the brakes, so all that talk about caliper stiffness isn't just imaginary. And the response and direct translation of brake pressure to deceleration M's is more solid and linear than ever before. It only keeps getting ameliorate! With these brakes and the balance of the MPP running gear, you'd swear you were in a Porsche or exotic on the track. Everything is just and so directly and sharp. Yet on the street, there was no brake noise, no rattles, and virtually no brake dust.

MPP.R taking information technology to the next level!

This kit has been designed with custom piston sizes and so that the brake bias has been tuned to what we believe is ideal for this platform, and what is in line with the remainder of the tuning we have washed on the platform (email us if yous want more detail). This caliper has a huge range of pad options available, so if further brake-bias tuning is desired, that tin can exist achieved through the use of different friction brake compounds front and rear.

These calipers install using your existing MPP brake lines. If you don't already have MPP stainless braided brake lines, you'll need to society them here.

This MPP.R brake arrangement includes the following:

• (2) Rotor rings and rotor hats assembled and ready to be installed on the auto. They are directional so be sure to install them on the correct side!
• (2) Caliper brackets
• (four) Caliper bracket studs
• (4) Caliper bracket washers
• (iv) Caliper subclass jet-basics
• (4) Caliper stud set-screws
• (ii) StopTech STR-sixty calipers
• (iv) StopTech Sport brake pads, which are platonic for street and medium to moderate track-mean solar day utilise (the pads don't fade with RWD Model 3 at a fairly brake intensive rails).

Note: The 368mm rotors will NOT work with the OEM 18″ aero wheels, withal, it works with merely well-nigh every aftermarket 18″ bike we take checked. Delight e-mail the states if you're unsure and nosotros will provide drawings you can use to check.

For Installation Instructions, click Hither

Boosted information

Rotor Diameter	368mm, 380mm
Rotor Thickness	35mm (OE 25mm)
Rotor Weight	368mm: 21.9lbs 380mm: 22.5lbs (OE 19.4lbs)
Hat Thickness	7.5mm
Caliper Weight	9.1lbs including brackets, studs, and nuts (OE 9.0lbs)

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Source: https://www.mountainpassperformance.com/product/mppr-str60-bbk/

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