High-Carbon Cast Iron
Heat-treated high-carbon cast iron improves thermal stability and damping compared with basic gray-iron replacement rotors.
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Description
Knurled Dacromet High-Carbon Steel Brake RotorBrake Rotor Friction Ring High Carbon Cast Iron Two Piece Rotor Service Knurled Dacromet High Carbon Cast Iron Brake Rotor Friction Ring TTSPORT knurled Dacromet high carbon cast iron brake rotor friction rings are custom machined rotor discs for compatible two piece brake rotor assemblies. They are built for drivers who want stronger thermal stability, cleaner pad transfer, and better repeatability than a basic factory style one piece rotor can
Brake Rotor Friction Ring · High-Carbon Cast Iron · Two-Piece Rotor Service
Knurled Dacromet High-Carbon Cast-Iron Brake Rotor Friction Ring
TTSPORT knurled Dacromet high-carbon cast-iron brake rotor friction rings are custom-machined rotor discs for compatible two-piece brake rotor assemblies. They are built for drivers who want stronger thermal stability, cleaner pad transfer, and better repeatability than a basic factory-style one-piece rotor can provide.
Heat-treated high-carbon cast iron, a knurled bedding surface, internal ventilation, and Dacromet anti-corrosion protection make these rings a strong upgrade for performance street driving, canyon roads, and weekend track use when paired with the correct rotor hat, mounting hardware, and pad compound.
Why a Two-Piece High-Carbon Ring
Knurled Friction Face
The cross-knurled bedding pattern helps the pad establish a more even transfer layer during break-in.
Dacromet Protection
Non-friction surfaces are protected with Dacromet anti-corrosion coating to help reduce rust on vanes, edges, and mounting areas.
Two-Piece Rotor Format
The friction ring is designed to work with a separate rotor hat, allowing ring replacement when the hat remains within service specification.
Designed for Heat Management
- Internally vented ring structure promotes airflow through the rotor for faster cool-down between braking events.
- High-carbon cast iron helps damp vibration and supports quieter braking behavior than a basic untreated gray-iron rotor.
- Two-piece compatibility allows the friction ring and hat to be matched around vehicle hub offset, caliper centerline, and hardware style.
- Floating-style mounting behavior depends on the matching hat and hardware design; confirm the correct hardware before assembly.
- Serviceable format allows worn friction rings to be replaced while reusing compatible aluminum hats when the hats remain undamaged and within specification.
Friction Ring Only
This listing is for the brake rotor friction ring only. To build a complete two-piece rotor assembly, pair this ring with compatible TTSPORT billet aluminum rotor hats and the correct mounting hardware. Confirm ring diameter, thickness, vane direction, bolt count, bolt-circle pattern, and hardware style before purchase.
Specifications
| Brake Rotor Friction Ring | |
|---|---|
| Component | Two-piece brake rotor friction ring / rotor disc only |
| Material | Heat-treated high-carbon cast iron |
| Friction Face | Knurled bedding pattern |
| Coating | Dacromet anti-corrosion protection on non-friction surfaces |
| Construction | Internally vented, two-piece rotor compatible |
| Intended Use | Performance street, canyon driving, light track use |
| Rotor Hat | Sold separately; compatible billet aluminum hat required |
| Mounting Hardware | Sold separately unless specified on the final order |
| Sizing | Custom-machined per order; confirm diameter, thickness, vane direction, and bolt pattern |
Specs reflect the friction ring only. Final dimensions depend on the configuration selected at order.
This product page describes brake rotor friction rings only. Rotor hats, rotor hat bolts, bobbins, nuts, washers, brake pads, calipers, brake hoses, brake fluid, and complete two-piece rotor assemblies are not included unless separately specified on the final order.
Fitment Check Before Ordering
- Confirm friction ring outside diameter and overall thickness.
- Confirm left/right vane direction if the rotor uses directional ventilation.
- Confirm hat-to-ring bolt count, bolt-circle diameter, bolt diameter, and hardware style.
- Confirm whether the assembly uses fixed hardware, floating bobbins, or another TTSPORT-approved mounting format.
- Confirm rotor hat offset and caliper centerline before changing ring size or ring thickness.
- Confirm pad compound compatibility for performance street, canyon, or light track use.
Application-specific part: Do not order by diameter alone. Ring thickness, vane direction, bolt pattern, mounting hardware, and hat offset must match the target assembly.
Installation Notes
- Bed-in is required. Follow the pad manufacturer's bedding procedure to deposit a uniform transfer layer.
- Use new, matched hardware when assembling the ring to the hat unless the rotor manufacturer specifically approves hardware reuse.
- Torque mounting hardware to the specified value in the required sequence. Do not guess torque values.
- Clean the rotor hat mounting face, friction ring mounting face, and hardware contact areas before assembly.
- Inspect ring thickness, surface condition, heat checking, and runout periodically.
- Replace the ring before it reaches minimum thickness or shows unsafe cracking, heavy scoring, or abnormal wear.
- Pair with a pad compound suited to the use case: street, mixed-use, or light track.
Safety: Two-piece rotor assembly work should be performed by a qualified brake technician. Incorrect hardware, torque, ring direction, or hat compatibility can cause rotor misalignment or brake failure.
Service Expectations
- High-carbon cast iron improves thermal stability, but it does not make the ring immune to cracking or wear.
- Light heat checking can occur in performance use; growth rate and crack depth must be inspected during service.
- Weekend track use requires more frequent thickness, runout, and surface-condition checks than street use.
- Dacromet coating protects non-friction areas; any coating or residue on the pad path will wear through during initial braking.
- If switching to a different pad compound, clean, resurface, or replace the rotor as needed to avoid incompatible transfer layers.
Need help confirming friction ring fitment?
Send your current rotor diameter, thickness, vane direction, bolt count, bolt-circle pattern, rotor hat photos, caliper model, and pad compound. TTSPORT will help confirm the correct friction ring before ordering.
Frequently Asked Questions
Is this a complete rotor or just the ring?
This is the friction ring only. You need a compatible aluminum rotor hat and matching mounting hardware to build a complete two-piece rotor assembly.
What is the benefit of high-carbon cast iron over standard gray iron?
High-carbon cast iron improves thermal stability and vibration damping compared with basic gray iron. That supports more consistent pedal feel, quieter braking behavior, and improved resistance to heat-related cracking when the ring is bedded and used correctly.
What does the knurled friction face do?
The knurled bedding pattern helps the pad establish an even transfer layer during break-in. A stable transfer layer improves initial bite, pedal consistency, and smooth brake feel.
Will the Dacromet coating wear off the friction surface?
Dacromet protection is intended for non-friction areas such as vanes, edges, and mounting surfaces. Any coating or residue on the pad contact path will wear through during initial braking and bedding.
Can I use these rings on a track car?
They are suitable for performance street, canyon, and light weekend track use when paired with the correct pad compound, rotor hat, mounting hardware, cooling, and service interval. Dedicated race programs may require a more aggressive rotor and pad setup.
How do I confirm fitment?
Confirm friction ring diameter, thickness, vane direction, hat bolt pattern, bolt count, hardware style, and rotor hat offset against your existing assembly. Contact TTSPORT with your build details if you need help specifying the correct ring.
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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