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You asked for it, so we delivered! We're proud to introduce the first G25-660 turbo kit to the GT-R market. This kit is perfect for a street car looking to make around 1000whp with instant spool and transient response.

The G25-660 is the most advanced small frame turbocharger available on the market. This turbocharger featuring an all new ball bearing CHRA, Ultra High Flow G-Series Compressor Wheel, Evolutionary Aero G-Series Turbine Wheel made from high heat resistance Mar-M Alloy with a 1050 Celsius Rating.

Check out this in-depth article from Mike Kojima of Motoiq - https://motoiq.com/getting-big-vr38dett-power-with-extreme-turbo-systems/

Horsepower Output:

G25-660 - Capable of 1150whp with extremely fast spool.

G25-660 Turbocharger Information

  • Compressor Wheel
    • 54mm Inducer
    • 67mm Exducer
    • 65 Trim
    • 0.70 A/R
  • Turbine Wheel
    • 54mm Inducer
    • 49mm Exducer
    • 84 Trim

Features:

  • 1.9" Runners over our competitors 1.25" Runners.
  • Garrett G25-660 Turbochargers.
  • Cast Stainless Manifolds
  • Complete Turbo Kit

Includes:

  • 2x Cast Manifolds
  • 2x Heat Shields
  • 2x G25-660 Turbochargers
  • 2x TiAL MV-R Wastegates
  • 2x 3.0" or 3.5" Downpipes
  • 2x 3.0" or 3.5" Inlet Tubes
  • 2x Vent To Atmosphere or Recirculated Dump Tubes
  • Lower Intercooler Piping
  • Oil Lines
  • Water Lines

Large runners -  At 630cc per cylinder, the vr38 is 21% per cylinder larger than most 3.0l 6cyl and 2.0l 4cyl. On a cylinder to cylinder basis. To put a small runner on such a large cylinder is like putting a restrictor plate on the engine.

Heat Shields - As the front of the GT-R is Aluminum, an unshielded kit can distort or weaken the front end of the vehicle. Also on the passenger side, the fuel lines must be kept cool for both the obvious fire reasons, but also to avoid tuning issues with a varying fuel density. Also if the fuel is allowed to get too hot, it can cause vapor lock issues at the inlets of very high flow pumps.

Pre-Assembled -  Because of the very tight fitment of the R35 engine bay, we feel that the alignment of the kit must be perfect. The V-Band connections allow for a multitude of clocking positions, if not clocked perfectly, there could be many in and out attempts for install. This will cost either the shop or the customer excess money. To minimize this confusion, our kits come pre-assembled, with all water and oil lines installed. This will be a major labor savings at time of install.

Equal length runners -  All cylinders, front to back and side to side have runners of a mean length of 12" =/- .300 This allows for precise tuning, crisper throttle response and less individual cylinder trimming. Also to compliment the 12" length which will work best 6500-8000 rpm, we use a moderately angled merge collector so there is a powerful scavenging effect to adjacent cylinders at the collector. This creates less back pressure at the exhaust valves and better overall breathing of the engine.

Wastegates in line with flow -  With the very high flow rates of the new billet wheel turbos, we have found the wastegate system must be very efficient, or else boost creep could be induced. As well a keeping run away boost under control, a very efficient wastegate system will allow tuners to start a tune at a much lower boost pressure, ensuring that the whole tuning process is done safely.

Factory Intake, IC pipe positions -  Both the intakes and intercooler pipes terminate in factory positions, allowing the turbo kit to bolt up to your existing stock turbo intakes and Intercooler kits.

Down Pipes to factory locations -  The High flowing 3" v band downpipes terminate at factory location allowing perfect connection to factory or aftermarket Y pipes. Downpipes are also bracketed to help locate the correct clocking outside the car

Critical Lines Away from heat -  All of the Oil/Water lines are routed away from heat, down and around the turbos, instead of over and across the turbos. This will ensure a lifetime service life for these lines, while also lowering the temperatures of the fluids within the lines.

Support Brackets for Critical Lines -  All Oil / Water lines are bracketed to prevent vibration or failures. This is extremely important for track vehicles, where high vibration and G forces can cause premature failure of unsupported lines.

Fully ported at every transition -  From the head flanges to the exhaust flanges and even the PCV barbs in between, we pride ourselves on the best craftsmanship and attention to detail in the industry. This means that all flanges are surfaced, all transitions ported, and all pieces are clean. These details may not make any major power differences, but it can be the difference in numbers such as 998 vs 1002 whp.

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ETS

ETS (Extreme Turbo Systems) is a premier manufacturer of high-performance automotive components, specializing in turbo kits, intercoolers, exhaust systems, and other performance parts. Renowned for precision engineering and exceptional quality, ETS products are designed to maximize power and reliability for street and motorsport applications. Trusted by enthusiasts and racers, ETS delivers cutting-edge solutions for ultimate performance.

View More ETS Products

Popular FAQs

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Why Should I Buy Extreme Turbo Systems (ETS) Products from JD Customs USA?

Why Should I Buy Extreme Turbo Systems Products from JD Customs USA?

JD Customs USA is a trusted retailer for Extreme Turbo Systems performance products, offering enthusiasts a reliable place to purchase high-quality intercoolers, intake systems, charge piping, exhaust components, and turbo-related upgrades. When you buy ETS products from JDC, you are purchasing from a retailer that understands forced induction performance, airflow optimization, and real-world fitment requirements.

Extreme Turbo Systems is widely known for producing race-proven components used on high-horsepower street cars and competitive track builds. JD Customs USA ensures these products are listed accurately and supported with knowledgeable guidance to help customers choose the right solution for their build.

Are Extreme Turbo Systems Products from JD Customs USA Authentic?

Yes. All Extreme Turbo Systems products sold by JD Customs USA are 100 percent genuine and sourced directly through authorized ETS distribution channels. This guarantees authentic materials, proper weld quality, correct dimensions, and performance standards that ETS is known for.

Buying ETS products through JD Customs USA protects customers from counterfeit parts, incorrect piping layouts, or poorly constructed alternatives commonly found through unauthorized sellers.

Does JD Customs USA Help with ETS Fitment and Product Selection?

Absolutely. ETS products are vehicle-specific and performance-goal dependent, and selecting the correct components is critical for proper operation. JD Customs USA provides knowledgeable support to help customers confirm:

  • Vehicle and engine compatibility
  • Turbo size and airflow requirements
  • Intercooler and piping configurations
  • Street, track, or high-horsepower use cases

Our team helps ensure ETS components integrate correctly with your existing setup before you place your order.

Why Buy Extreme Turbo Systems from JD Customs USA Instead of Other Retailers?

Many online retailers list ETS products without sufficient detail or real-world guidance. JD Customs USA provides clear product descriptions, accurate fitment notes, and realistic expectations, helping customers avoid ordering parts that do not match their setup or performance goals.

We focus on transparency so customers understand what supporting modifications or installation considerations may be required.

What Makes JD Customs USA the Right Place to Buy Extreme Turbo Systems Products?

JD Customs USA is an enthusiast-driven retailer focused on quality, accuracy, and long-term customer satisfaction. We curate Extreme Turbo Systems products that meet our standards for performance, durability, and proper fitment.

When you purchase ETS products from JD Customs USA, you receive:

  • Genuine Extreme Turbo Systems components
  • Verified vehicle fitment and configuration guidance
  • Accurate, detailed product listings
  • Support from knowledgeable performance enthusiasts
  • Secure checkout and careful order handling

Choosing JD Customs USA ensures you are investing in authentic Extreme Turbo Systems performance parts with the expertise and support needed to build your vehicle correctly and confidently.