4x NEW Nissan GT-R R35 GTR Brake Discs 390mm 380mm Complete
inventory at Buy Mustang parts Ltd, this 4-disc complete set is a high-demand item for GT-R owners looking to perform a full brake service. However, because Nissan changed the brake specifications mid-lifecycle, accurate labeling is critical for your high-end clientele.
1. Technical Compatibility: The 390mm / 380mm Split
The R35 GT-R utilizes different front rotor sizes depending on the production era. In 2026, many owners are looking for the “390mm Front Upgrade” to improve heat dissipation.
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Front Rotors (390mm): These are the factory spec for DBA (2012–2016) and EBA (2017–2024) models.
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Upgrade Note: These can be fitted to earlier 2009–2011 (CBA) models, but they require a caliper spacer kit to move the Brembo caliper outward by 5mm.
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Rear Rotors (380mm): This size has remained consistent across all standard R35 years (2009–2024).
2. 2026 Market Tiers & Pricing
Since you specialize in luxury components, stocking Full Floating 2-Piece rotors is recommended over 1-piece replacements to maintain the vehicle’s performance standards.
| Brand | Disc Type | Est. Set Price (USD) | Best For |
| Nissan OEM | 2-Piece Drilled | $3,800 – $4,500 | Collectors & “Stock” Restorations. |
| Brembo Racing | Type 3 Slotted | $3,200 – $3,600 | High-performance street/track dual use. |
| Alcon / AP Racing | C-Hook / J-Hook | $3,400 – $4,000 | Heavy track use (Anti-cracking tech). |
3. Strategic Advice for Buy Mustang parts Ltd
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The “Anti-Rattle” Selling Point: High-end floating rotors can sometimes “clatter” at low speeds. If your stock includes anti-rattle spring clips on the bobbins, highlight this as a “Luxury-Grade” feature that maintains cabin quietness.
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Cross-Drilled vs. Slotted: While the OEM look is cross-drilled, they are prone to hairline cracking under heavy heat. Market the Slotted (J-Hook/C-Hook) versions as the “Reliability Upgrade” for drivers who actually use the car’s 600hp.
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The “Bedding-In” Value Add: Include a small instruction card with the Bedding-In (Seasoning) Procedure. This prevents “Brake Judder” complaints and positions your business as a technical expert rather than just a parts reseller.
4. Inspection & Quality Control
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Minimum Thickness ($TH_{min}$):
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390mm Fronts: New at 32.6mm; replace at 30.6mm.
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380mm Rears: New at 30.0mm; replace at 28.0mm.
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Bobbins & Hardware: Ensure the 10 or 12 bolts connecting the iron ring to the aluminum “hat” are torque-marked. If the bolts show signs of rust or have been reused, the unit is unsafe for resale.
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Runout Check: Use a dial indicator to ensure the discs have less than 0.05mm of runout. Even “New” discs can be warped if they were stored improperly at the bottom of a heavy stack.
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