Subaru WRX STI NR4 Spec


Initially the news that Subaru Australia was making a competition STI for "enthusiasts and professional teams" wasn't that big a deal. Great news, Aussies can play at being McRae over the jumps from 38,000 dollars (Β£18K) with specs ranging from "club amateur to the professional." They even get the old EJ20 2.0-litre engine and its 8,000rpm redline.

Now we're talking!
Now we're talking!
But then a bit of research found that British company JRM - an official base team of STI - is already making NR4-spec cars for production rallying. Somehow the launch of the 2015 car missed us at the start of the season but it sounds brilliant so here's what you need to know.

The NR4 regulations have been introduced by the FIA in an attempt to create a "truly level playing field in production rallying." The car is eligible for the WRC 2 and ERC 2 championships as well as regional production championships. JRM believes mechanical running costs should be no more than Β£15 per km.

As well as that 2.0-litre flat-four (284hp and 413lb ft), there's a Hewland five-speed 'box, three-way adjustable Ohlins dampers, Sparco seats, a clutch and brakes from AP Racing and, most importantly, a hydraulic handbrake. JRM is aiming for a minimum weight of 1,393kg.

Now to cost. The JRM NR4 Impre... sorry, WRX STI is Β£99,995 plus VAT. Factor into that also Β£1,750 for a roof vent (your Subaru rally car needs a roof vent) and then running costs. JRM says a 1,500km rebuild is Β£6,500 plus any turbo costs and a gearbox/diff inspection (all of three of them!) is from Β£1,950. But who wouldn't fancy a go if funds allowed? Relive the glory days in a burbling four-door Subaru? For those that still need convincing, see (and hear) the little vid below - it'll definitely reawaken the inner fanboy.

Handbraking a hairpin vid here.



[Sources: WCF, JRM Group, WRC.com]

P.H. O'meter

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Comments (16) Join the discussion on the forum

  • renaultgeek 22 Jul 2015

    is it a typo or is it far cheaper in oz?

  • xRIEx 22 Jul 2015

    It sounds like Oz is getting them built that way from the factory; I guess over here they have to buy a complete car, then do a strip/rebuild conversion.

  • WCZ 22 Jul 2015

    284bhp subaru for £120,000 - i'll pass thanks.

  • P1H 22 Jul 2015

    "But who wouldn't fancy a go if funds allowed?"

    You mean fancy spending £120k on a 284hp STI which weighs 1,393kg and needs an engine rebuild after 1,500km?

    PH, please come and join us in the real world.










  • xRIEx 22 Jul 2015

    P1H said:
    "But who wouldn't fancy a go if funds allowed?"

    You mean fancy spending £120k on a 284hp STI which weighs 1,393kg and needs an engine rebuild after 1,500km?

    PH, please come and join us in the real world.
    Let's say, for example, that an equivalent road-going 284hp WRX has that 284hp at 7000rpm, but only 220hp at 5000rpm and 90hp at 3000rpm (no idea if they're likely on a power curve, I'm just making numbers up for the hypothesis).

    Now, what if this rally-prepped WRX has 284hp at 7000rpm, 280hp at 5000rpm and 260hp at 3000rpm; which would you prefer now?


    Would you spend £250,000 on a 300-ish hp Fiesta?

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