FLEX
FLEX PRO R31-R V2 Turbo Kit + MCR Nozzle Combo
FLEX PRO R31-R V2 Turbo Kit + MCR Nozzle Combo
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FLEX PRO R31-R V2 Turbo Kit + MCR Nozzle Combo
Included in this Combo
1 x FLEX PRO R31-R V2 Turbo (44mm)
1 x FLEX Installation Kit (Gaskets, Dump Pipe Flange)
1 x FLEX Oil Feed Line and Oil Return Fittings
1 x FLEX Installation Lube
1 x MCR (+30) Injector Nozzles (4PCS)
1. FLEX PRO R31-R V2 Turbo Kit (44mm)
The R31-R V2 is a FLEX Pro Series Turbo that is manufactured to a higher standard than the FLEX 'Street' and 'Boost' Series Turbos. The R31-R V2 is a gated 44mm turbo that is designed to produce 30-35psi of boost in the low-mid RPM range - perfect for touring, towing and daily driving. Pair with an intercooler and +30 nozzles for solid power gains. The R31-R V2 is a popular turbo upgrade for 4cyl diesel engines.
Specifications
- 44.5mm font / 46mm rear
- 12 blade turbine
- 6 blade compressor
- RHF4 flange
- Waste Gate Actuator (fully assembled)
- 30-35psi recommended
- A perfect match for the 4J engine
Check out our Instagram post on our 2012 Isuzu Dmax that has had the FLEX R31-R Fitted and Tuned! Click Here
2. MCR (+30) Injector Nozzles
MCR are a trusted automotive performance company based in Thailand that specialise in aftermarket diesel injection parts (including drag spec applications). Whilst MCR are a Thai based company, MCR nozzles are manufactured in Japan to the highest manufacturing standards.
Specifications
- 30+ Injector Nozzles (30% bigger than stock)
- 4 x Nozzles Per Pack (one for each Injector)
- Increase fuel flow from stock injectors
- Suitable 30-45psi applications
- High quality part manufactured in Japan
- Tuning recommended after fitment
Compatible Vehicles (Combo):
- Rodeo RA7 2007 - 2008 (4JJ1)
- RC Colorado 2008 - 2011 (4JJ1)
- RG Colorado 2012 - 2017 (4JJ1)
- Isuzu Dmax 2008 - 2011 (4JJ1)
- Isuzu Dmax 2012 - 2017 (4JJ1)
- Isuzu MUX 2012 - 2017 (4JJ1)
*If fitting the FLEX PRO R31-R V2 to a factory 4JJ1 VNT/VGT exhaust manifold, the turbo flange bolt holes may need to be cut on one side of the flange to align the factory bolt holes. Alternatively, the stock manifold can be drilled and tapped, or an adaptor plate can be used.





