Parts graph
RB26DETT
The RB26DETT is a 2.6L twin-turbo inline-six with a forged crank and iron block that handles ~550whp on stock internals, but its known fuses are the cast pistons, the oil pump drive collar on early BNR32 cranks, and a MAF-based factory ECU that pegs out around 400whp. The classic path runs bolt-on twins (GT-SS or -5s) on a Nistune/Z32 MAF ROM tune, then jumps to a forged bottom end, big single, and standalone speed-density ECU for 800whp-plus.
Compatibility intel 17 edges
The rules that make combinations work — or not. This is the knowledge that used to live in dead forum threads.
- Tomei 740cc Injector Set (6)requiresWalbro F90000285 485lph In-Tank Pump700cc-class injectors outrun the tired stock pump at 550whp fuel demand; a 485lph in-tank unit holds base pressure to redline.
- RB26DETTconflictsTomei 740cc Injector Set (6)The factory ECU cannot rescale K-constant or injector latency for 740cc, so it idles pig-rich and fouls plugs without a Nistune or standalone.
- Z32 300ZX MAF Pair (80mm)unlocksTomei 740cc Injector Set (6)Z32 meters raise the airflow voltage ceiling so a ROM tune can rescale fueling for bigger injectors without pegging 5V.
- Nistune Type 4 Daughterboard + Base TunerecommendsZ32 300ZX MAF Pair (80mm)Nistune stays MAF-based, and the stock 65mm meters max out near 400whp — twin Z32s are the standard pairing for -5-sized power.
- HKS GT-SS Sport Turbine Kit (pair)requiresTomei 740cc Injector Set (6)GT-SS twins at 1.1bar push the stock 444cc side-feeds past 100 percent duty; 700cc-class injectors are the floor.
- HKS GT-SS Sport Turbine Kit (pair)recommendsExpreme Ti Titanium Catback (80mm)Stock-position twins respond hard to backpressure — a full 80mm-plus exhaust is worth roughly 20whp on GT-SS at the same boost.
- Garrett GT2860R-5 (-5) Twin TurbosrecommendsR-Type Front Mount Intercooler (600x301x100)-5s at 1.4bar heat-soak smaller cores on back-to-back pulls; a 600x301x100 front-mount keeps intake temps stable.
- Garrett GT2860R-5 (-5) Twin TurbosrecommendsTR2CD Twin-Plate ClutchThe stock pull-type clutch starts slipping around 400lb-ft; a twin-plate holds -5 torque with streetable pedal effort.
- Garrett GT2860R-5 (-5) Twin TurbosrecommendsElite 2500 ECU + RB26 Terminated HarnessMost 550whp -5 builds ditch MAFs for a standalone to get flex fuel and per-cylinder trim, though Nistune plus Z32s can carry it.
- CP Pistons + Carrillo Rods Package (86.5mm)unlocksG35-900 Single Turbo Kit w/ 6Boost ManifoldThe stock cast pistons are the fuse past roughly 600whp; a forged bottom end is what opens the big-single tier safely.
- G35-900 Single Turbo Kit w/ 6Boost ManifoldrequiresElite 2500 ECU + RB26 Terminated HarnessA single conversion deletes the twin-MAF intake tract entirely, so speed-density on a standalone is mandatory.
- G35-900 Single Turbo Kit w/ 6Boost ManifoldrequiresID1050-XDS Injector Set (6) w/ Top-Feed Rail850whp on pump gas needs roughly 1000cc per cylinder to stay at a sane duty cycle with margin for knock-safe enrichment.
- G35-900 Single Turbo Kit w/ 6Boost ManifoldrecommendsHigh-Flow Oil Pump + Extended Drive CollarSustained 8000rpm at big power exposes the RB26 oil pump — early BNR32 short-snout cranks are notorious for splitting drive collars.
- ID1050-XDS Injector Set (6) w/ Top-Feed RailrequiresWalbro F90000285 485lph In-Tank Pump1000cc injectors without matching pump flow simply lean out at the top of third gear; 485lph is the floor, twin pumps for E85.
- RB26DETTrecommendsHyper V 48mm Aluminum RadiatorEvery RB26 radiator is now 25-plus years old with brittle plastic end tanks; an aluminum core is cheap insurance on any tuned build.
- 355mm 6-Piston Front Big Brake KitrecommendsVolk TE37 Saga S-plus 18x9.5 +22 (set)355mm two-piece discs demand 18in wheels with aggressive spoke clearance, and the TE37's concave face is a known-clear fitment.
- BR Series CoiloversconflictsRoad & Track DFV CoiloversBoth replace the complete strut assembly — pick the BR for street budget or the DFV if the car sees track days; you cannot run both.
Manufacturer application charts 8 records
Fitment straight from the manufacturers’ current application pages — chart-level ground truth for this platform.
- BNR32BCNR33BNR34
Application page covers the RB26DETT used in the three listed GT-R chassis.
- BNR32BCNR33BNR34
Current model/application table lists BNR32, BCNR33 and BNR34.
- BNR34
The current complete-engine application table lists BNR34 for the RB26 2.8L and 3.0L variants.
- S14S15BNR32BCNR33BNR34AP1
Extracted only requested-engine applications from the current Hipermax S list.
- BNR32BCNR33BNR34PS13RPS13S14S15
Manufacturer chart separates RB26 and SR20 intake/exhaust applications by engine and chassis generation.
- BNR32BCNR33BNR34
The web catalogue lists all three RB26 GT-R chassis.
- BNR32BCNR33BNR34WGNC34
The 2026 application notice explicitly lists these chassis.
- BNR32BCNR33BNR34
Factory line application is limited to the listed Skyline GT-R chassis.
Turbo & power
HKS GT-SS Sport Turbine Kit (pair)
HKS
Ball-bearing stock-position twins; near-stock spool with a healthy midrange bump, the classic fast-street tier.
Garrett GT2860R-5 (-5) Twin Turbos
Garrett
The legendary N1-frame '-5s' — the definitive 550whp twin setup, laggier than GT-SS but a hard top-end pull.
G35-900 Single Turbo Kit w/ 6Boost Manifold
Garrett
Twin-scroll single conversion; deletes the twins and MAF tract entirely, the modern 800whp-class route.
Engine internals
CP Pistons + Carrillo Rods Package (86.5mm)
CP-Carrillo
Forged bottom end at 0.5mm over; machine-shop balance and clearancing required, opens the four-figure tier.
High-Flow Oil Pump + Extended Drive Collar
Tomei
Fixes the RB26's most famous weakness — the narrow oil pump drive on early cranks that splits collars at sustained high rpm.
Injectors
Tomei 740cc Injector Set (6)
Tomei
Drop-in side-feed replacements sized for the twin-turbo tiers; the traditional pairing with -5s on a ROM tune.
ID1050-XDS Injector Set (6) w/ Top-Feed Rail
Injector Dynamics
Top-feed conversion with excellent low-pulse-width control; E85-compatible and the go-to for big-single builds.
Fuel system
Walbro F90000285 485lph In-Tank Pump
Walbro
E85-rated high-pressure pump; needs a rewire kit as the stock GT-R pump wiring voltage-drops under load.
Engine management
Elite 2500 ECU + RB26 Terminated Harness
Haltech
Full standalone with speed-density, flex fuel, and per-cylinder trim; the platform default for serious power.
Nistune Type 4 Daughterboard + Base Tune
Nistune
Live-tunable ROM board in the factory ECU; keeps OEM drivability and ATTESA integration on a budget.
MAF & sensors
Z32 300ZX MAF Pair (80mm)
Nissan
The culturally canonical MAF swap — twin 80mm Z32 meters replace the stock 65mm units that peg near 400whp.
Intercooler
R-Type Front Mount Intercooler (600x301x100)
HKS
Large-core front-mount with cast end tanks; period-correct and still one of the best-flowing cores for the chassis.
Cooling
Hyper V 48mm Aluminum Radiator
Koyorad
Direct-fit all-aluminum core replacing the brittle 25-plus-year-old plastic-tank original; track-proven.
Exhaust
Expreme Ti Titanium Catback (80mm)
Tomei
Sub-10kg full titanium system; big backpressure reduction and the signature burnt-tip look.
Clutch
TR2CD Twin-Plate Clutch
OS Giken
Dampened twin-plate that holds -5-and-beyond torque while staying streetable; gearbox-out install.
Drivetrain
GT Pro 1.5-Way Rear LSD
Nismo
Mechanical clutch-type rear diff replacing the aging viscous unit; transforms corner-exit drive with ATTESA.
Suspension
BR Series Coilovers
BC Racing
30-way adjustable street coilover; the value pick for a driven GT-R that sees occasional spirited use.
Road & Track DFV Coilovers
Ohlins
Dual Flow Valve damping that is genuinely compliant on street and composed on circuit; the enthusiast benchmark.
Brakes
355mm 6-Piston Front Big Brake Kit
AP Racing
Massive fade resistance over the stock Brembos for track work; two-piece discs keep unsprung weight in check.
Wheels
Volk TE37 Saga S-plus 18x9.5 +22 (set)
Rays
THE GT-R wheel — forged monoblock, 18x9.5 +22 is the classic square fitment clearing big brakes.
RPF1 18x9.5 +38 (set)
Enkei
The budget track hero — very light MAT-forged flow-formed wheel with famously generous brake clearance.
Prices are typical 2026 USD street prices. Fitment data is community-sourced tuning knowledge, not a guarantee — verify with your tuner before ordering. Marketplace links (Yahoo Japan, UpGarage, Nengun, RHDJapan, eBay) land here next.