EDIT - Introductory group buy details added in post #19 below. Click here

If you’re serious about reducing weight, improving handling, and maximizing braking performance, BSPK’s Carbon-Ceramic Brakes (CCB/CCM) are here. Fitments available for all models but a few choice setups featured to start.

For those that don't know me, I founded BSPK Forged ('Bespoke Forged') in early 2022 as an enthusiast driven forged wheel company dedicated to bringing high quality forged wheels at accessible price points. Taking direction from my personal interests, I subsequently expanded into magnesium wheels and carbon ceramic brakes. BSPK is defined by thoughtfully engineered solutions and premium customer service, and I take tremendous pride in BSPK's reputation in various automotive communities. As a recent 992 owner myself, I am beyond excited to begin rolling out BSPK's offerings to the Porsche community.

To the extent there is interest, I am hoping to do a group buy to get these formally launched in the Porsche community.


Designed for Enthusiasts, Engineered for Performance

This isn’t just about the prestige of CCBs—it’s about real performance benefits where they matter most. The BSPK system dramatically reduces unsprung and rotational mass, delivering:

• ✅ Sharper handling & more responsive steering
• ✅ Improved acceleration & braking performance
• ✅ Unmatched heat resistance for track and street use

Tailored for Each Individual Platform

As most Porsche owners know, every pound saved in the braking system makes a massive impact on how the car feels and performs. This isn’t a one-size-fits-all kit—BSPK CCBs are engineered specifically for the demands of the vehicle, providing the perfect balance of weight reduction, durability, and stopping power.


Built to Last – With No Downsides

Unlike steel rotors that wear down and require frequent pad replacements, BSPK CCBs are designed to last the life of your car for most users. Even heavy track drivers will see dramatically extended longevity compared to traditional setups—with reasonable replacement costs if/when needed.. As someone who tracks regularly, this is one of the most exciting elements IMHO. We've been teased with the performance of CCBs for decades but replacement cost made tracking with CCBs wildly impractical, that paradigm is about to change.


No Dust, No Noise—Just Pure Performance

• ✅ ZERO brake dust (street use) – Keep your wheels looking pristine, no more constant cleaning.
• ✅ Completely silent operation – No annoying squeaks or grinding, just smooth, consistent stopping power.
• ✅ Fade-free performance – Whether you're carving canyons or pushing hard on track, these brakes deliver every time.

Why BSPK?

Being new to Rennlist, I suspect most won't be familiar with BSPK, but I am very proud of the reputation for quality and affordability that I have built in the BMW and Alfa Romeo communities. I don’t just resell parts—I develop solutions that make a real difference. My approach to CCBs is no different—enthusiast-driven, performance-focused, and designed to transform how your Porsche drives.


⚙️ Available Now in two introductory fitments (more to follow)

If you want lighter, stronger, and track-ready brakes for your Porsche, DM me or drop a comment .

The product itself is not new to market. I have been supplying these to the Alfa Romeo 4C and BMW G8x communities for about a year and have numerous extremely happy customers (see customer testimonials below)

Let’s get your Porsche braking better, handling sharper, and performing at its peak.

For clarity, BSPK CCBs are sold as a complete solution, 4 rotors and 8 pads. The kit is 100% plug and play with your existing steel brakes (or PCCB replacement) and includes necessary hardware when needed (e.g. Carrera / Carrera T 330/330 to 350/350 conversion). Many choose to DIY the swap; it's no different than any rotor/pad change.


Introductory Fitments/Pricing:





Product Weights:




Weight Comparison:

 

Here's a full technical breakdown of BSPK’s CCBs —from materials to manufacturing to lab testing. I've also included comparisons to Surface Transforms, Brembo, and other OEMs. Happy to answer any questions.

BSPK Carbon-Ceramic Brake Discs – Technical Briefing

1. Introduction
BSPK carbon-ceramic brake discs are engineered for uncompromising performance in both high-performance street and demanding track environments.
Leveraging aerospace-grade materials and a proprietary silicon carbide (SiC) surface layer, BSPK CCBs deliver exceptional thermal stability, wear resistance, and consistent friction across a wide range of operating conditions.
Rigorously tested in both lab and real-world scenarios, BSPK’s braking solutions are purpose-built for enthusiasts who demand the highest standard in performance and reliability.

2. Core Composition & Structure

Base Material

• Constructed using continuous long-fiber carbon tow, woven into a dense 3D preform for exceptional multi-directional strength.
• Embedded in a carbon-ceramic matrix and fused through Liquid Silicon Infiltration (LSI) to produce a rigid, thermally stable disc body.

Surface Layer

• A uniform silicon carbide (SiC) outer layer forms on the friction surfaces during LSI.
• This SiC layer dramatically enhances:
  • Oxidation resistance
  • Wear durability
  • Friction stability at elevated temperatures

3. Manufacturing Process


4. Performance Attributes

Mechanical Strength & Durability

• Burst resistance exceeds 6600 rpm, surpassing standard OEM and motorsport thresholds.
• Withstands repeated thermal cycling without cracking or structural degradation.
• Lifespan: >250,000 miles under mixed (non-track) driving conditions.

Thermal Stability

• Designed to endure sustained braking temperatures of 700°C+ without fade or distortion.
• Peak tolerance exceeds 1100°C, thanks to the integrated SiC layer.

Wear Resistance

• The SiC surface layer provides up to 5x longer lifespan than non-coated CCM discs.
• Consistent friction coefficient across full duty cycle.

Cooling Performance

• Proprietary vane and venting design accelerates heat dissipation.
• 6% faster static cooling compared to Brembo CCBs.

5. BSPK Pad Options & Compatibility
BSPK Street and Track pads are developed in-house to deliver optimal friction, wear, and NVH characteristics across a wide range of driving conditions.




6. Benchmark Comparison Table
BSPK CCB compared to other leading carbon-ceramic technologies across key metrics.


7. Test Results Summary

Burst Strength Testing
What is it?
The burst test measures the maximum rotational speed a brake disc can withstand before catastrophic failure, ensuring it remains structurally safe under extreme centrifugal forces well beyond real-world driving conditions.

Results:

• BSPK front: 6,289–6,389 rpm (equivalent of ~487 mph)
• BSPK rear: 6,535–6,667 rpm (equivalent of ~506 mph)
• ✅ Passed (surpassing industry standard of ≥5500 rpm)

Cooling Rate Bench Test
What is it?
Cooling rate bench test measures the time it takes a stationary disc (e.g. on a bench) to cool from 500°C to a specified temperature (typically 150°C or 100°C). It is a measure of a disc’s radiative/conductive cooling.

Results:

Thermal Decay Simulation
What is it?
Thermal Decay Simulation tests how well a brake disc maintains its friction and structure after thousands of high-heat brake events.

Results:

• 2000 braking cycles at max temp of 725°C
• Friction coefficient remained stable throughout all 2000 cycles, with no measurable fade or performance drop-off.
• No visible cracking, glazing, or spalling

8. Why BSPK?
BSPK Carbon-Ceramic Brake Discs are the result of meticulous materials engineering and real-world validation.
Designed with long-fiber carbon construction, LSI-based SiC surface protection, and proprietary pad chemistry, BSPK CCBs deliver elite performance at a competitive price point.

• ✅ Advanced Material System – Long-fiber carbon + SiC for optimal strength and wear
• ✅ Track Stability – Exceptionally resilient to thermal decay and fade
• ✅ Superior Cooling & Durability – Engineered to outlast and outperform
• ✅ Robust Brake Pad Ecosystem – BSPK Street and Track pads tailored for ideal friction and balance

 

Testing done on a G80 M3. I am actually a 992 owner and will be conducting similar testing against OEM PCCBs (if the snow ever melts). Additionally, multiple Porsche customer sets are already in the wild and we should expect to see their experiences documented as well.

Testing Update:

This will be long so let’s get to the punchline:

• No observable fade across 36 full-power stops in 36 minutes.
  Best results:
• 70–0: 132 ft (vs 146 OEM CCB / 159 OEM Steel)
• 100–0: 278 ft (vs 291 OEM CCB / 309 OEM Steel)
• Testing performed on worn Michelin PS4S (50% tread) in 49°F weather, with street pads.

Testing Objectives
This test was designed to showcase outright braking performance as well as fade resistance under repeated hard use. I set out to gather as much data as possible in a short time span, completing 36 full-power stops in 36 minutes.
Testing was conducted on my G80 M3 (OEM Michelin PS4S, ~50% tread) in Massachusetts, with ambient temps around 49°F — far from ideal conditions.

Baseline for Comparison
For benchmarking, I used Car and Driver's reported stopping distances for both Steel and CCB-equipped G80 M3 6MT cars:




These numbers come from C&D’s standardized methodology: six stops per test, with the second-best used as the official result.

Car & Driver Testing Methodology



Slope Correction Method
To account for slope during testing, I converted each Dragy-recorded stop to a flat-ground equivalent using a constant deceleration model:

Excel-friendly version:
= [Observed Distance] * (1 / (1 - (32.174 * SIN(RADIANS([Slope])) * [Observed Distance]) / (([Beginning MpH] * 1.46667)^2)))
This standardizes every run regardless of uphill/downhill variation.

Results: BSPK CCB vs. OEM (C&D Methodology)
Using the second-best stop methodology (just like C&D), here’s how BSPK CCBs stacked up:

✅ When using C&D’s method, BSPK CCBs significantly outperform both OEM options.




Average of All Runs
For completeness, I also calculated the average of all 36 runs — understanding this isn’t an apples-to-apples comparison to C&D, but helps show overall behavior (including imperfect driver inputs, cold tires, etc.).



✅ Even on a run-to-run average basis, BSPK brakes beat both OEM options.


Fade Resistance – All Runs Over Time
To visualize fade, I plotted all 36 runs over time. Each bar represents a flat-corrected stopping distance.

70–0 Stopping Distance (ft)



100–0 Stopping Distance (ft)



Key Observations:

• Example: Between 6:13–7:49, five stops were completed in 90 seconds, and the last two were the best.
• Similarly, at 8:38–10:27, four 100–0 stops were done in 110 seconds — the final stop beat the first.

BSPK CCBs (on street pads) consistently performed under repeated stress with no performance degradation.

Conclusion
These tests show that BSPK CCBs:

• Outperform OEM CCB by up to 9% and 5%, respectively
• Deliver repeatable performance with no fade
• Achieve all this using street compound pads in cold weather with worn tires

Appendix
Raw Dragy data from all 36 runs available below.

 

Please note that this is just a sampling. I will go through my emails / texts and add to this...

 

Will you by chance make any smaller diameter sets of these? I am particularly interested in a set of 322mm discs for a 993 c4s/turbo set up. And possibly a set for a 987.2 Spyder which can use the 350mm set with a proper caliper spacer if you are making those type of kits.

 

Absolutely. I am happy to support any and all requests for various models. In addition to the listed fitments on my site, I have made sets for all varieties of vehicles (Huracan, Corvette C6 Z06, Honda S2000, Ariel Atom, Audi SQ5, etc.). I get a lot of people who purchase a kit for one car, experience the difference, and want to do their other car, daily driver, etc..

I would be happy to work together on something for your 993. I am actually uniquely qualified to do smaller fitments. My 4C fitment uses a 292x22 rear rotor. For the S2000, I was able to develop a vented 282x16 disc (something originally thought to be infeasible). I am definitely the right guy for smaller discs.

In terms of the 987.2, I absolutely can and do supply caliper spacers/hardware when needed. My Carrera T 330/330 to 350/350 kit ships with the requisite hardware, as does the GT4 RS 408/380 to 410/390 kit.

Feel free to send me a DM or email if you'd like to discuss in detail. Thanks!

 

@John@BSPK
718 Boxster GTS 4.0 front rotors are 350mm (thickness = 34mm) and rears are 330mm (thickness = 28mm)
Since your current offerings are for 350mm with hardware for rears to go from 330mm to 350mm do you think this kit you are offering will work for 718 GTS 4.0?

 

Interested in 991.1 PCCB replacement (350/350) or an upgrade (380/380) if available ..

 

PM sent to you.

 

The 350 rear would work fine. I see there are already some 350 rear options on the market for the 4.0 cars, so there should be no problem there. I could also develop a 330 rear option if there's interest in a true drop in replacement.

Admittedly, part of the intent here was to introduce the product with the couple fitments I had already done for people and determine what additional fitments there is demand for.

One that I have already had several people request is a 380/380 steel to CCB conversion for the GT4/Spyder cars and that will absolutely be added (both to the catalogue going forward as well as the initial group buy).

I welcome people suggesting various fitments they would be interested in as it helps me to see where the interest is and determine how to best serve the market.

Thanks!

 

Thanks for the info
1. 350 front with 330 rear as a true drop in replacement would be great i.e. no conversion kit needed.
2. For a 350 front 350 rear would your kit provide the necessary hardware/conversion-kit?

 

Yes, both would be possible. For #2, I would supply all necessary brackets/hardware to adapt for the larger rotor.

 

That could definitely be accommodated. I think there's material overlap in the calipers Porsche uses (my 992.1 PCCB caliper is cast with a 991 part number) so I don't think much would be different (I will obviously verify - scrambling a bit to address various messages today so something I will dig into this evening.

Appreciate the interest though and, one way or the other, would love to help with some PCCB replacements for your 991.1. Thanks!

 

Can you please share more information on how to join the group buy in the first post, thank you

 

Absolutely. I am planning on posting the group buy details tomorrow.

I really appreciate all the messages. It’s been extremely helpful to get a sense of the level of interest, as well as the different fitments that are of interest to people.

I’m actually going to change a little bit of what I originally planned for the group buy based on that as to better serve some of the fitment requests that I hadn’t initially anticipated.