Monoblock Forged Caliper
One-piece forged aluminum body resists flex under high line pressure, keeping piston alignment honest lap after lap. Caliper weighs 3.19 kg without pads.
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Ships within 48 hours · Estimated delivery Jul 8 - Jul 13
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Description
Circuit Racing TR68 Front Wheel 6-Piston Big Brake KitRacing Series Circuit Front Axle 6 Piston TR68 Front 6 Piston Big Brake Kit The TR68 is a front axle, 6 piston monoblock big brake kit built for circuit work repeat lap pace, predictable pedal feel deep into a session, and a service window that holds up to real track abuse. Forged aluminum body, staggered piston bores, and a two piece rotor package sized from 355 to 390 mm give you the thermal headroom and bite balance circuit drivers actually need.
Racing Series · Circuit · Front Axle · 6-Piston
TR68 Front 6-Piston Big Brake Kit
The TR68 is a front-axle, 6-piston monoblock big brake kit built for circuit work — repeat lap pace, predictable pedal feel deep into a session, and a service window that holds up to real track abuse. Forged aluminum body, staggered piston bores, and a two-piece rotor package sized from Ø355 to Ø390 mm give you the thermal headroom and bite balance circuit drivers actually need.
Why Builders Choose the TR68
The TR68 is built for circuit drivers who need thermal repeatability, tunable brake balance, and serviceable hardware across long sessions. A monoblock forged body, staggered 6-piston bore layout, 36 mm-thick two-piece rotors, and PTFE / SUS304 braided lines work together to deliver a firm, linear pedal under sustained load.
Staggered 6-Piston Bore
27 / 32 / 38 mm differential bores load the pad evenly front-to-rear, fighting taper wear and keeping the friction surface flat through long stints. Total piston area: 50.10 cm² per caliper.
Two-Piece Race Rotors
Ø355, 378, or 390 mm × 36 mm two-piece assemblies with directional vanes. Choose curved slot, grain slot, wave slot, or drilled-and-slotted faces.
Pad Window You Can Tune
Standard compound 0–600 °C, μ ~0.38. Optional racing compound 0–750 °C, μ ~0.45 for higher-energy circuits and heavier cars.
Thermal Repeatability
36 mm-thick vented two-piece rotors and a forged caliper shed heat across long sessions without pedal fade.
Serviceable Track Platform
Two-piece rotor design lets you replace friction rings only — hats, bobbins, and hardware stay in service.
Technical Specifications & Kit Options
| Brake Caliper | |||
|---|---|---|---|
| Series | Racing Series — Circuit | ||
| Model / Application | TR68 | ||
| Axle Position | Front | ||
| Piston Count | 6-piston | ||
| Piston Type | Racing pistons without dust boots | ||
| Piston Diameter | 27 mm × 2 / 32 mm × 2 / 38 mm × 2 | ||
| Caliper Dimensions | 299 mm × 191 mm × 79.4 mm | ||
| Total Piston Area | 50.10 cm² per caliper | ||
| Manufacturing Process | Monoblock forged aluminum body | ||
| Net Weight | 3.19 kg per caliper, without pads | ||
| Surface Finish | Nickel-plated | ||
| Recommended Wheel Size | 18 in or larger | ||
| Recommended Rotor Size | Ø355–390 mm × 36 mm | ||
| Brake Rotor Options | |||
| Rotor Option | 355 mm | 378 mm | 390 mm |
| Rotor Material | Heat-treated high-carbon cast iron or Option B racing-grade heat-treated high-carbon cast iron | Heat-treated high-carbon cast iron or Option B racing-grade heat-treated high-carbon cast iron | Heat-treated high-carbon cast iron or Option B racing-grade heat-treated high-carbon cast iron |
| Axle Position | Front | Front | Front |
| Rotor Dimensions | Ø355 mm × 36 mm | Ø378 mm × 36 mm | Ø390 mm × 36 mm |
| Construction | Two-piece rotor assembly | Two-piece rotor assembly | Two-piece rotor assembly |
| Ventilation | Internally vented | Internally vented | Internally vented |
| Rotor Hats | Application-specific alloy rotor hats | Application-specific alloy rotor hats | Application-specific alloy rotor hats |
| Rotor Mounting | Fixed or floating, depending on rotor size and vehicle | Fixed or floating, depending on rotor size and vehicle | Fixed or floating, depending on rotor size and vehicle |
| Directional Design | Yes — left/right specific | Yes — left/right specific | Yes — left/right specific |
| Rotor Face Pattern | Curved slot / Grain slot / Wave slot / Drilled & slotted; Option B: Wave slot | Curved slot / Grain slot / Wave slot / Drilled & slotted; Option B: Wave slot | Curved slot / Grain slot / Wave slot / Drilled & slotted; Option B: Wave slot |
| Recommended Use | Lightest rotor option for tighter circuits, lower-mass cars, or wheel-clearance-limited builds | Balanced choice for most track-day and time-attack builds | Maximum leverage and heat capacity for high-speed circuits, heavier platforms, and endurance use |
| Brake Pad Options | |||
| Pad Option | Standard | Option B Racing | |
| Compatible Rotor Material | Iron / steel rotors only | Iron / steel rotors only | |
| Operating Temperature | 0–600 °C | 0–750 °C | |
| Average Friction Coefficient | μ ~0.38, varies with temperature, pressure, and rotor condition | μ ~0.45, varies with temperature, pressure, and rotor condition | |
| Recommended Use | HPDE and club-level track use | Endurance, heavy cars, and sustained high-energy stops | |
| Lines, Brackets & Service | |||
| Brake Line Construction | Three-layer reinforced | ||
| Brake Line Material | PTFE inner liner / SUS304 stainless-steel braid / PVC protective outer sheath | ||
| Caliper Mounting | Radial mount with vehicle-specific caliper brackets | ||
| Caliper Brackets | Vehicle-specific radial caliper brackets | ||
| Brake Line Fittings | Vehicle-specific; caliper-side and chassis-side fittings vary by application | ||
| Wheel Clearance | 18 in or larger wheel recommended; final clearance depends on wheel design, spoke shape, barrel offset, rotor size, and bracket package | ||
| Rotor Service | Two-piece rotor design allows friction ring replacement while retaining the alloy hat, bobbins, and hardware when serviceable | ||
| Bedding-In Procedure | Required before track use | ||
Track-use product. Racing pistons run without dust boots and racing pads have higher cold-bite thresholds. Bedding-in is required. Confirm wheel clearance, 18 in minimum, and final fitment with TTSPORT before installation.
Package List
Calipers ×2
2 × TR68 front monoblock forged 6-piston calipers with nickel-plated finish.
Brake Pads
Brake pads for both front calipers, selected from Standard 0–600 °C or Option B Racing 0–750 °C package.
Brake Rotors ×2
2 × two-piece internally vented front rotors, selected from Ø355 / 378 / 390 mm × 36 mm, left/right specific.
Caliper Brackets ×2
Vehicle-specific radial-mount caliper brackets for correct front caliper alignment.
Rotor Hats ×2
Application-specific alloy rotor hats matched to front hub geometry and rotor offset.
Brake Hoses ×2
Three-layer stainless-steel braided brake lines with PTFE inner liner, SUS304 braid, and PVC protective outer sheath.
The Bespoke Engineering Process
Every TR68 front circuit 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, rear brake pairing, tire package, and intended motorsport 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 behavior under sustained circuit heat.
1. Technical Consultation
We review the chassis, front suspension and knuckle setup, motorsport use, target front brake behavior, rear brake pairing, wheel package, tire compound, vehicle weight, power level, and whether the car uses OEM or custom front uprights.
2. Data Submission
For OEM knuckles, provide vehicle information, wheel specs, hub geometry, and intended use. For custom uprights, motorsport hub conversions, or non-OE rotor offsets, provide CAD files, technical drawings, hub-face data, rotor mounting dimensions, or accurate bracket mounting-point measurements.
3. Engineering Review & Approval
TTSPORT confirms rotor diameter, vehicle-specific caliper bracket geometry, rotor hat offset, wheel clearance, brake line fittings, pad compound, and pad-to-rotor alignment before production begins.
If you are unsure whether your wheel, front knuckle, hub geometry, rotor offset, rear brake pairing, or brake line routing is suitable, Contact us before ordering so the engineering team can review the build details.
Installation & Break-In
- Every TR68 kit ships with vehicle-specific radial-mount brackets and matched braided lines.
- If your chassis is not already in the TTSPORT database, send hub geometry, wheel spec, and photos so the engineering team can model the bracket, confirm rotor offset, and validate pad-to-rotor alignment before production.
- Choose Ø355 mm for tighter tracks, lower-mass cars, or wheel-clearance-limited builds.
- Choose Ø378 mm as the balanced choice for most track-day and time-attack builds.
- Choose Ø390 mm for high-speed circuits, heavier platforms, and endurance use.
- Standard 0–600 °C / μ 0.38 pad covers HPDE and club-level track use.
- Racing 0–750 °C / μ 0.45 pad is the call for sustained high-energy stops.
- Bedding-in is required before track use to transfer pad material evenly to the rotor face and stabilize the friction surface.
Frequently Asked Questions
Is the TR68 a front or rear kit?
Front axle. It's a 6-piston front big brake kit. Pair with a matched TTSPORT rear kit to maintain brake balance.
What rotor size should I choose?
Ø355 mm is suited to tighter tracks, lighter cars, or wheel-clearance-limited builds. Ø378 mm is the all-round track-day choice. Ø390 mm gives maximum leverage and heat capacity for high-speed circuits, heavier platforms, or endurance use. All three are 36 mm thick.
What's the difference between the standard and Option B Racing package?
Option B uses a racing-grade heat-treated high-carbon iron ring with a wave-slot face and the higher-temperature pad, 0–750 °C with μ ~0.45. It's built for sustained high-energy braking. The standard package is suited to club track and HPDE use.
Will it fit under my wheels?
Recommended wheel size is 18 in or larger, but final clearance depends on wheel design, spoke shape, and barrel offset. Send your wheel spec and TTSPORT will confirm before shipping.
Are the rotors serviceable?
Yes. The two-piece design lets you replace just the friction ring when it is worn or cracked, reusing the aluminum hat and hardware. This is a major cost saving over consecutive track seasons.
Does the kit include brake lines and brackets?
Yes. Each kit ships with vehicle-specific radial-mount caliper brackets and three-layer PTFE / SUS304 / PVC braided lines with application-correct fittings.
Ready to Spec Your TR68?
Tell us your chassis, wheel size, and intended use — track day, time attack, or endurance — and we'll confirm rotor diameter, pad compound, rotor hat offset, bracket availability, and brake line fittings.
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
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★★★★★ 5
Is super soft and works for elderly
Size: 2' x 3' (Natural shape, Sheepksin, Oblong), Color: Ivory White
My mom has been ill and confined to her recliner for sleeping. She developed pressure sores and was in a great deal of pain. We needed to treat the sores and I researched how to prevent in first place and found that genuine sheepskin helps. I had no idea this was a thing. I ordered this for her recliner and a seat one for the car. She loves this. She said she could feel an immediate difference in sitting for so long that she didn't need to shift constantly. I don't understand the mechanics behind why this works but I'm grateful for something natural and affordable like this to offer such relief.
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Reviewed in the United States on June 26, 2025
★★★★★ 5
Photo of the color differences for you!
Size: 2' x 3' (Natural shape, Sheepksin, Oblong), Color: Ivory White, Size: 2' x 3' (Natural shape, Sheepksin, Oblong), Color: Ivory White
The white one seems softer than the cream one!? Seems like great value for your money for a single pelt, the seller and product didn’t seem sketchy at all.
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Reviewed in the United States on January 25, 2026
★★★★★ 5
Nice
Size: 2' x 3' (Natural shape, Sheepksin, Oblong), Color: Ivory White
Worth it
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Reviewed in the United States on January 1, 2026
★★★★★ 4
Design worthy
Size: 2' x 3' (Natural shape, Sheepksin, Oblong), Color: Ivory White
Good looking and thick and solid and comfortable.
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Reviewed in the United States on September 26, 2025
★★★★★ 5
Great product: thick and cozy
Size: Single Pelt/2 ft x 3 ft, Color: Natural (Ivory Whiite)
This is a lovely, thick sheepskin. I’m using it to drape over a chair. It’s very soft. The color is a natural white. Arrived quickly. The price was great for such a wonderful sheepskin.
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Reviewed in the United States on April 3, 2026