GT-R | RB26DETT Twin Turbocharger Upgrade

Our turbocharger offerings for the R32, R33, and R34 Nissan Skyline GT-R is something we've been working on and testing in multiple iterations for the better part of 10 years and we are pleased to offer this as our flagship product line. Dyno results and customer feedback have been fantastic, and this was one niche we knew was worth the continued effort and iteration.  Whether it is a responsive ball-bearing based bolt-on twin turbo kit, or a motorsports-grade single turbo system, we feel we can provide unmatched performance for your GT-R.

All RB26 Twin-Turbo models are built around new, made-in-Japan Garrett Turbochargers. These have now been updated to include the latest Ball Bearing Cartridge, with Silicon Nitride Ball ans Silver-Plated 4340 Bearing cages, With Upgraded Compressor and Turbine specifications by Spectrum.

Two-Piece Billet Compressor Housing inserts are now available with any specification. This Ported Shroud design helps to broaden the flow range of each Compressor, and Improves Compressor Efficiency in the low and mid-range.

45/R - Ultimate Street Twin Turbo

The 45/R Twin Turbo Combination is perfectly matched to the powerband of the RB26 with stock or mildly upgraded cylinder head. The latest spec of this turbo utilizes a brand new high-response 9-blade Billet Compressor. The Turbine match ensures engine delta pressure remains balanced across a wide RPM range, allowing for over 80% of peak torque from 4500RPM - 8500RPM with 2.6L displacement. These Turbochargers are a great match for mild engine builds and up to 500hp, and when response and Torque characteristics are paramount. Each set comes standard with 12PSI adjustable wastegate actuators and hand-ported wastegate port.

Compressor A/R - .42 A/R

Compressor Inducer - 45mm

Turbine Exducer - 42mm

Turbine Trim - 62

Turbine A/R - .64

47/R - All-out Power

The 47R compressor supports an impressive 40lb/min of airflow each in an extremely light and compact package. This turbocharger utilizes a 47mm compressor with Two-piece billet Ported Shroud to ensure a broad flow range, capable of supporting significant boost at 4500RPM and up to 30PSI at 8500 RPM. While these are optimized for high RPM power, the onset of power and boost at low RPM is smooth and gradual, providing an enjoyable powerband. Each set comes standard with 16PSI adjustable wastegate actuators and hand-ported wastegate port.

Compressor A/R - .6 A/R

Compressor Inducer - 47mm

Turbine Exducer - 47mm

Turbine Trim - 76

Turbine A/R - .64

48/X - Max-Effort Bolt-On

For those looking to find the upper limits of aftermarket Cast Exhaust Manifolds and Turbine Outlets on the RB26, these point-milled, low-Inertia 48mm Compressors offer exceptionally high Efficiency and up to 45lb/min, while maintaining good transient response. Being able to support such mass flow through a relatively small inducer diameter avoids potential Compressor Surge and response issues... common with other "large" RB26 twins. 

Best suited for 2.8L+ and / or High RPM and Volumetric Efficiency Cylinder Head packages, or those Targeting 600whp+. Below this threshold, our smaller variants are better suited. Each set comes standard with 16PSI adjustable wastegate actuators and hand-ported wastegate port.

Compressor A/R - .6 A/R

Compressor Inducer - 48mm

Turbine Exducer - 47mm

Turbine Trim - 76

Turbine A/R - .64

All of our turbochargers are built to order to meet your exact requirements and specifications.  Our current lead time is 2 weeks.  Please email info@spectrummotorsportssolutions.com for more information.

All prices are listed in USD.  

We ship internationally from our shop located in BC, Canada.

International shipments may be subject to customs duties, taxes, and/or tariffs which are based on recipient shipping location and are not included in your total.  Any additional charges relating to this will be the sole responsibility of the recipient and will be payable to the applicable local tax authorities.