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G25-660 Ball Bearing KURO Turbocharger Kit for VW Golf R MK8 & Audi A3 / S3 8Y (EA888.4)

G25-660 Ball Bearing KURO Turbocharger Kit for VW Golf R MK8 & Audi A3 / S3 8Y (EA888.4)

Upgrade your MQB Evo platform with the KURO G25-660 Ball Bearing Turbocharger by Arashi Dynamics — a high-flow, stock-location turbo designed specifically for the EA888 EVO4 engine. Engineered for enthusiasts seeking significant power gains with reliable spool and OEM-style fitment, this turbo is an ideal solution for high-performance street or track builds.

Built around a reverse-trim billet compressor wheel and high-performance Inconel turbine, the KURO G25-660 delivers excellent airflow efficiency and durability under high boost. Featuring a ceramic ball-bearing CHRA and modern housing design, this turbocharger is designed as a direct replacement upgrade for factory Continental turbos found on MK8 Golf R and Audi A3 EA888 EVO4 platforms.

🚗 Compatibility:

  • VW Golf MK8
  • Audi A3 S3 (EA888 EVO4)
  • EA888 EVO4 engines only
  • Stock-location, OEM-style upgrade
  • Ball bearing replacement turbo

⭐ Features & Key Specs:

  • Brand new, complete CHRA balanced using a Turbo Technics VSR core-balancing machine (balance sheet included).
  • Replacement & upgrade for Continental turbo part numbers 06Q145703H / 06Q145703F / 06Q145703C.
  • Billet compressor wheel: 54 / 67 mm reverse trim, 9-blade point-mill design.
  • Inconel turbine wheel: 49 / 54 mm reverse trim, 9-blade high-performance design.
  • Arashi ceramic ball-bearing system for faster spool, reduced friction, and increased durability.
  • Compressor housing: 0.79 A/R.
  • Turbine housing: 0.61 A/R, material SCH22.
  • Water-cooled system for thermal stability under high boost.
  • Stock-location flange — retains OEM mounting points.

📦 Package Includes:

  • KURO G25-660 Turbocharger (fully assembled CHRA + housings) × 1
  • Oil line kit
  • Water line kit
  • VSR balance sheet

Important Notes

  • Professional tuning & supporting modifications are required for proper performance and engine safety.
  • Recommended supporting mods include upgraded intake, downpipe, intercooler, fueling, and ECU calibration.
  • Power results vary depending on fuel type, tune, and overall vehicle configuration.
  • This item may be a pre-order if stock is not currently held — please contact us for availability.
  • Ships directly from manufacturer.

ShipInsure Package Protection

We recommend selecting ShipInsure during checkout to protect your order from loss, theft, or damage in transit. Orders without protection are not eligible for shipping-related claims.

File a claim: Claims Center

EuroSpeed offers free worldwide shipping on all products.
We include tracking information at no extra charge with every order. Most in-stock items are processed and ready to ship within 2–5 business days.

Free Shipping Policy

At EuroSpeed, shipping is included in the price of our products for your convenience. This policy covers the initial cost of shipping your order to your destination.

Note: Import duties, taxes, or clearance fees imposed by your country are not covered under this policy and are the recipient’s responsibility. While our shipping partners typically handle customs clearance, they may occasionally require additional information. If needed, our team is here to assist with the process.

Fulfillment Locations

We stock products at both our U.S. facility and international fulfillment centers to accommodate buyers worldwide. Your order will ship from the location where the product is currently available.

If you would like to confirm stock availability at a specific location, please contact us prior to purchase.

Shipping Times (Estimated)

  • Orders typically ship within 5 business days of purchase
  • Custom carbon fiber items may require additional time for production
  • Delivery to most countries usually takes 5–14 business days after shipping
  • Custom carbon fiber items may deliver in 2–8 weeks from purchase date
  • All orders will receive a tracking number once generated by the courier (may take 2–3 business days after dispatch).

If any delays arise, we will promptly notify you via email with an updated timeline. Please note that these are estimates and may vary due to unforeseen circumstances. We cannot cancel or refund an order while it is in transit due to delays until the carrier officially marks it as lost.

Receiving Your Item

Upon delivery, carefully inspect the item for any defects or damage before signing for it. If the item is damaged or not as expected, do not accept the package. Once a damaged or defective product is accepted, EuroSpeed cannot cover return shipping costs.

Please ensure your shipping address is entered correctly. We are not responsible for any costs associated with providing an invalid or incorrect address, failure to accept delivery at the provided address, or failure to collect delivery from the post office within the required time frame. We are unable to provide refunds for orders delivered to an incorrect address.

Import Information

EuroSpeed’s free shipping policy does not include import fees, taxes, or duties required by your destination country. These charges are the responsibility of the recipient, and we are not responsible for any duties or taxes that your local customs may request. Please contact your local customs office or refer to their website for information on duty and tax amounts.

Most shipments clear customs automatically through the shipping provider. However, if additional information is needed to complete the process, we will assist you to ensure a smooth resolution.

If customs clearance fails and the item is returned or destroyed:

  • EuroSpeed reserves the right to deny refund claims
  • Returned items may incur return shipping fees, which will be deducted from any eligible refund
  • Items deemed too costly to return will be destroyed, and no refund will be issued if this occurs

ShipInsure Package Protection

For added peace of mind, EuroSpeed offers ShipInsure—an optional package protection service for your order. When selected during checkout, this service ensures coverage for lost or damaged packages. We are not responsible for shipping delays, lost packages, or damaged items if purchase protection is not selected during checkout.

  • Protects against lost or damaged packages
  • Must be selected at checkout
  • Not all oversized body kit purchases are eligible—please contact us for custom insurance arrangements if needed

To file a claim: Please visit our Claims Center.

ShipInsure Coverage Policy

  • Claim must be filed within 14 days of delivery
  • Packages stuck in transit for 14 days are considered lost
  • Damaged claims typically require photo evidence
  • 2-day buffer after delivery before lost/stolen claims may proceed
  • Police reports may be required for orders over $500 or where fraud is suspected
  • “Damaged” means broken and unusable

📨 Questions?

For any inquiries about your order or our shipping policies, please contact our team at support@eurospeed.co. We’re here to help!

Product Installation & Use Disclaimer

EuroSpeed is not liable for any damages, injuries, or issues resulting from the installation or use of our products.

We strongly recommend professional installation to ensure proper fitment and function. Any damage caused by improper installation, misuse, or modification is the sole responsibility of the user.

By purchasing and using this product, you acknowledge and accept all associated risks.

Free Delivery Worldwide

No minimum order price.

Technical support

Our trained staff is here to assist.

Package protection

We’ve partnered with ShipInsure to give you peace of mind.

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