Forged 6-Piston Caliper
Two-piece forged aluminum body, nickel-plated finish, and staggered 28 / 34 / 40 mm pistons deliver progressive bite and stable modulation.
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Description
Endurance & Rally Racing PB6 Water-Cooled Front Wheel 6-Piston Big Brake KitRacing Series Rally Endurance Drift Front Axle 6 Piston PB6 Water Cooled Front 6 Piston Big Brake Kit A front axle competition brake package built around a two piece forged aluminum 6 piston caliper, a 320 mm 34 mm two piece wave slot rotor, and a 0600 C race pad window. Engineered for teams that need repeatable pedal feel under sustained thermal load not a one stop hero kit. Racing Series Rally Front Axle 6 Piston Forged 28 34 40 mm Pistons 320 mm 34
Racing Series · Rally / Endurance / Drift · Front Axle · 6-Piston
PB6 Water-Cooled Front 6-Piston Big Brake Kit
A front-axle competition brake package built around a two-piece forged aluminum 6-piston caliper, a Ø320 mm × 34 mm two-piece wave-slot rotor, and a 0–600 °C race pad window. Engineered for teams that need repeatable pedal feel under sustained thermal load — not a one-stop hero kit.
Racing Series — Rally
Front Axle
6-Piston Forged
28 / 34 / 40 mm Pistons
Ø320 mm × 34 mm Rotor
17 in Wheel Min.
Motorsport Use
Why Builders Choose the PB6 Water-Cooled
This is a motorsport system for stage rally, tarmac rally, endurance circuit programs, drift builds, time attack, and HPDE cars that need stable bite over repeated brake events. Bootless racing pistons, race pads, and an application-specific install workflow assume a team that inspects, services, and beds brakes properly.
55.6 cm² Piston Area
Total piston area of 55.6 cm² per caliper gives strong front-axle authority for rally, endurance, drift, and circuit use.
Wave-Slot Two-Piece Rotor
Ø320 mm × 34 mm heat-treated high-carbon cast iron disc on a CNC aluminum hat, internally vented and left/right specific.
Race Pad Window
0–600 °C operating range with average μ ≈ 0.38. Pads are intended for iron / steel rotors only and require proper bedding before competition use.
Motorsport Service Logic
Bootless racing pistons reduce drag and support motorsport service intervals, including regular seal inspection, cleaning, and fluid changes.
Application-Specific Fitment
Caliper bracket geometry, rotor mounting style, brake line fittings, and wheel clearance are confirmed against your chassis and wheel package.
Technical Specifications & Kit Options
| Brake Caliper | |
|---|---|
| Series | Racing Series — Rally |
| Model / Application | PB6 Water-Cooled |
| Axle Position | Front |
| Piston Count | 6-piston |
| Piston Type | Racing pistons without dust boots |
| Piston Diameter | 28 mm × 2 / 34 mm × 2 / 40 mm × 2 |
| Caliper Dimensions | L 280 mm × W 169 mm × H 85 mm |
| Total Piston Area | 55.6 cm² per caliper |
| Manufacturing Process | Two-piece forged aluminum body |
| Net Weight | 3.44 kg per caliper, without pads |
| Surface Finish | Nickel-plated |
| Recommended Wheel Size | 17 in or larger |
| Recommended Rotor Size | Ø320 mm × 34 mm |
| Brake Rotor | |
| Rotor Material | Heat-treated high-carbon cast iron |
| Axle Position | Front |
| Rotor Dimensions | Ø320 mm × 34 mm |
| Construction | Two-piece rotor assembly |
| Ventilation | Internally vented |
| Mounting | Fixed or floating, depending on rotor size and vehicle application |
| Rotor Hats | CNC-machined high-strength aluminum alloy rotor hats |
| Directional Design | Yes — left/right specific |
| Face Pattern | Wave Slot |
| Brake Pads | |
| Compatible Rotors | Iron / steel only |
| Operating Temperature | 0–600 °C |
| Average Friction Coefficient | μ ≈ 0.38, varies with temperature, line pressure, and rotor condition |
| Bedding-In Procedure | Required before competition use |
| Lines, Brackets & Service | |
| Brake Line Construction | Three-layer reinforced |
| Brake Line Material | PTFE inner liner / SUS304 stainless braid / PVC outer sheath |
| Caliper Mounting | Radial mount with vehicle-specific caliper brackets |
| Caliper Brackets | CNC-machined carbon-steel radial-mount caliper brackets |
| Brake Line Fittings | Vehicle-specific; caliper-side and chassis-side fittings vary by application |
| Minimum Spoke Clearance | 97 mm |
| Wheel Clearance | 17 in or larger wheel required; offset and barrel profile must be verified against the caliper envelope |
| Service Requirement | Regular seal inspection, cleaning, fluid management, and competition service interval required |
Minimum spoke clearance is 97 mm. Offset and barrel profile still need to be verified against the PB6 caliper envelope: L 280 mm × W 169 mm × H 85 mm.
Package List
Calipers ×2
2 × PB6 Water-Cooled front two-piece forged 6-piston calipers with nickel-plated finish.
Brake Pads
Brake pads for both front calipers, rated 0–600 °C and intended for iron / steel rotors.
Brake Rotors ×2
2 × front two-piece internally vented wave-slot rotors, Ø320 mm × 34 mm, left/right specific.
Caliper Brackets ×2
Vehicle-specific CNC-machined carbon-steel radial caliper brackets for correct front caliper position and alignment.
Rotor Hats ×2
CNC-machined high-strength aluminum alloy rotor hats matched to front hub geometry and rotor offset.
Brake Hoses ×2
Vehicle-specific stainless braided front brake lines with PTFE inner liner, SUS304 braid, and PVC outer sheath.
The Bespoke Engineering Process
Every PB6 Water-Cooled front racing system is engineered around the vehicle’s front knuckle, hub location, rotor hat offset, wheel barrel, spoke clearance, brake line routing, front brake bias target, suspension package, series technical regulations, and intended rally, endurance, drift, time-attack, or HPDE use. The goal is not a generic universal fit; the goal is a front brake package that works with your chassis geometry and delivers repeatable pedal feel under sustained thermal load.
1. Technical Consultation
We review the vehicle, wheel and offset, suspension package, series technical regulations, competition format, front brake behavior target, brake cooling strategy, rear brake pairing, and whether the car uses OEM or custom front uprights.
2. Data Submission
For OEM knuckles, provide vehicle details, wheel specs, wheel offset, spoke profile, suspension setup, and series rules. For custom uprights, provide CAD files, technical drawings, hub-face data, rotor mounting dimensions, or accurate bracket mounting-point measurements.
3. Engineering Review & Approval
TTSPORT confirms caliper bracket geometry, rotor mounting style, rotor hat offset, brake line fittings, wheel clearance, pad and rotor compatibility, bedding requirements, and final fitment details before quoting and production.
If you are unsure whether your wheel, front knuckle, rotor offset, series rules, brake cooling strategy, or brake line routing is suitable, Contact us before ordering so the engineering team can review the build details.
Installation & Break-In
- This kit is engineered for rally, endurance, drift, time-attack, HPDE, and closed-course motorsport use.
- PB6 Water-Cooled uses radial-mount calipers with vehicle-specific brackets and application-specific brake line fittings.
- Before shipment, bracket geometry, rotor mounting style, brake line fittings, and wheel clearance are confirmed against your chassis and wheel package.
- 17 in or larger wheels are required, with a minimum spoke clearance of 97 mm.
- Offset and barrel profile must be verified against the caliper envelope: L 280 mm × W 169 mm × H 85 mm.
- Racing pistons without dust boots reduce drag and tolerate higher sustained caliper temperatures, but require motorsport service intervals.
- Proper installation, bedding, fluid management, and inspection are mandatory.
- Bedding-in is required before competition use to transfer pad material evenly and stabilize the friction layer.
Motorsport use disclosure: Racing pistons without dust boots, race-compound pads, and high-carbon rotors are intended for competition vehicles maintained on a motorsport service interval. They are not recommended for low-maintenance street driving.
Frequently Asked Questions
What kind of racing is the PB6 Water-Cooled BBK built for?
It targets endurance, rally, drift, and circuit programs that load the front axle with sustained heat. The 6-piston forged caliper, two-piece Ø320 mm × 34 mm wave-slot rotor, and racing pad window, 0–600 °C, are sized for repeatable stops rather than a single hot lap.
Is this a direct bolt-on kit for my car?
No. The PB6 Water-Cooled is a Racing Series build. Caliper brackets, rotor mounting, fixed or floating, and brake line fittings are confirmed per chassis through the engineering workflow. Send your vehicle, wheel spec, and series rules before ordering.
What wheel size do I need to clear the calipers?
17-inch or larger wheels are required, with a minimum spoke clearance of 97 mm. Offset and barrel profile still need to be verified against the caliper envelope, L 280 mm × W 169 mm × H 85 mm, for your specific wheel.
Why are the pistons bootless?
Racing pistons without dust boots reduce drag and tolerate higher sustained caliper temperatures. They assume a motorsport service interval — regular seal inspection, cleaning, and fluid changes. They are not recommended for daily street use.
What pad and rotor combination ships with the kit?
The kit ships with a race compound rated 0–600 °C, average μ ≈ 0.38, on a heat-treated high-carbon cast iron Ø320 mm × 34 mm two-piece rotor with wave-slot face and directional vanes. Pads work on iron / steel rotors only.
Is a bedding-in procedure required?
Yes. A proper bed-in is mandatory to transfer pad material evenly to the rotor and stabilize the friction layer before competition use. Skipping bed-in causes judder, inconsistent μ, and short pad life.
Spec your PB6 Water-Cooled build
Send your chassis, wheel package, suspension setup, and intended series. TTSPORT will confirm bracket geometry, rotor mounting style, line fittings, and clearance before quoting.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.3 ★★★★★
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Product Reviews
★★★★★ 5
Great watch for healthcare workers
This is a great watch that I use for my nursing clinical rotations at hospitals. It has been washed and disinfected many times and it still looks new. I can read the time without my glasses I wear for astigmatism. The light is good for nighttime or darkened rooms. I think the alarm and hourly chime are harsh sounding, but they serve their purpose if needed (The beep of a Casio digital watch is preferred, for a frame of reference).
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 5, 2026
★★★★★ 4
used solely as start watch for yacht racing: interface is good (lacks sync feature). Great value
on foredeck of a sailboat, lines and sails love to snag on stuff, especially wrist watches. Have had three torn from my wrist in 18 months. Two went overboard. I even tried to purchase super-strong spring-bars (pins that secure the band), but it was torn off again.
PRO:
great (intuitive, quick) interface for setting the countdown starting time, and option to repeat or count up.
easy to read display
CON:
No sync feature: in countdown timer mode, would allow adjusting the running countdown to the nearest minute.
Delay in switching modes: had left it in time-of-day mode and heard a starting signal, immediately switched to Timer mode and pressed start button, but it did not start the timer. On switching modes, it takes nearly a second for Timer mode to be operational, so need to wait until display comes on before trying to use it.
Time-of-day is not visible in Timer Mode, if it was, previous issue would rarely occur.
No Power down feature: my previous watch had an option to shut off the LCD display (and any audible alarms). Since I only use the watch about 100 hours (1%) of the year, this greatly extended the battery life.
All that said, the dedicated sailing watches all cost two to ten times as much with the lower cost options having poor reviews on quality. For now, I'll buy these (Timex Ironman Essential 30) and just expect to loose one on average once a year.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 3, 2024
★★★★★ 5
Great watch - Nice large display!!
After my old Timex Ironman finally died after 21 years of reliable service (may it rest in peace after 4 replacement bands and 5 replacement batteries!!), I decided Timex deserved another sale from me!
So I went surfing on the Timex website. So many Timex Ironman watches to choose from! But this one stood out for two reasons. 1) It has a nice simple design without a lot of "noise". 2) A nice large readable display. So I took the plunge!
Indeed, Timex has definitely improved on their Ironman watches in the last 21 years. Most notably, the Indiglo light has greatly improved. It used to just light up the background. Now, it brightly lights up the actual digits which makes it undeniably readable without any eye strain. Another great improvement are in the set features. While the older models could only be set forward (in other words, if you went past your set point, you would need to go all the way around), this model lets you set forward and backward (so if you go too far, you can step back without going around).
I don't understand one of the reviewers saying that the watch is too small. The face is quite large. The band may seem narrow in proportion to the watch face, but not excessively so. The band is 19mm wide and fits me just fine.
Highly recommended!!
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Reviewed in the United States on November 12, 2017
★★★★★ 5
Like it so far after 2 weeks of swimming.
Like it so far after 2 weeks of swimming. Have been careful nio to press buttons underwater. I Like the large numerals, backlight, countdown timer, stopwatch and alarm.
My last Timex 1440 lasted 10 years before the battery was low enough that the backlight was too weak to see at night. I replaced the battery on it but did not seal the o ring well enough with silicon grease so it leaked and quit working. I also had also replaced the band once.
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Reviewed in the United States on September 9, 2024
★★★★★ 5
Good product.
A very nice and comfortable watch. Display is easy to read (I have poor eyesight). The menu is simple and intuitive. Fast delivery to Israel.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 1, 2025
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