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The hefty price tag and somewhat limited availability of the BMW M5 and M6 ensures that only a select few get behind the wheel of a 500 HP masterpiece. That kind of power, coupled with the razor-sharp performance of a precision-tuned BMW suspension make for a driving experience rivaled by few automobiles on our planet. No matter how great these M-tuned Bimmers are, however, there are some who strive for more. That's why companies like Dinan are around to transform the sublime into the ridiculous.

If you have a passion for power and an additional $40,000 in your budget, Dinan can transform your "ordinary" M5/M6 into a race-ready athlete with the heart of the champion. For your 40-large, Dinan will take the 5.0L V10 that powers the "standard" M5/M6 and bore and stroke it to 5.7 liters. The end result is a legitimate road beast that cranks out 628 hp and 482 lb-ft. The additional hp under the bonnet of the Dinan M's still revs freely to 8100 RPM, and much of the torque is available as low as 3000 RPM. To keep Dinan's 5.7L flamethrower breathing freely, the engine tuner added high flow Intake/air mass meter assemblies, high flow throttle bodies, free flow mufflers and a racing exhaust. Sure the extra $40k can almost buy you a spare 335i, but if you want to make your M5/M6 even more exclusive, Dinan's solution is as good as any.

Thanks for the tip, slblack.

[Source: Dinan]


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  • 34 Comments
      • 7 Years Ago
      This must be for the 6 speed stick cars only.
      The SMG is limited to 8500rpm, and 550meter-newtons, 405ft-lbs.
      The numbers seem suspect as well.

      and do they change the axle ratio to the taller?
      • 7 Years Ago
      That price is ridiculous. I mean, that's almost half the value of the car for just 130 brake hp!?!

      If I owned an M5/M6 and wanted more power I think I'd wait around for some more tuners to develop products.

      Seems like a bad investment - but hey, great country - people are free to do what they want.
      • 7 Years Ago
      $40,000 for 128 more hp. That would be about $312.50/hp. I think i'll just add a 150 shot of nitrous for about $1200 and get the same numbers.
        • 7 Years Ago
        Lol I hope you're joking. If you aren't, please think about what you typed. You gonna have a constant feed of NOS? haha. THAT would be expensive. And not as sweet as Dinan's work.
      • 7 Years Ago
      Man, rich people have all the fun......
      • 7 Years Ago
      A cummins diesel could make those numbers too but it would be crap to drive.
      HotRodzNKustoms
      • 7 Years Ago
      Way too much money.
      • 7 Years Ago
      Matchup, line up a Vette and a M6. put a chick in the middle . Revv each engine and see which engine sound peels her panties.

      Contest over., winner BMW
      • 7 Years Ago
      Nice mods. But that's a crazy heavy price hike. Yikes!
        • 7 Years Ago
        Too many pistons.
      • 7 Years Ago
      I wonder if a local engine builder could do similar for under $5k. Forged/knife edged/balanced crank, forged pistons and rods, custom maf sensor and throttle bodies....just seems like a lot of moolah for what you're getting.
        • 7 Years Ago
        Not for $5,000 on a V10; that's $500 per cylinder, which is what the pistons would cost on their own, unless you want to downgrade what came with $100k car. $20,000, sure that's possible, but you're getting pretty cheap labor at that point.
      • 7 Years Ago
      I've heard rumors that BMW is going to be adding more HP to M5 and M6 to diminish threats from AMG and Audi RS spec cars. Maybe we'll see something similar from BMW, at least over 600hp. Also whatever happened to US market M5s with manual gearboxes?
        • 7 Years Ago
        That shouldn't be too hard, although it's already dry-sump and has an advanced valve train setup; the engine can probably rev higher than 8,100, but they played it safe. They could possibly turbo charge it.
        • 7 Years Ago
        I've actually seen an M5 here in the US with a manual 6 speed, so they make them and they are available if you order it that way.
      • 7 Years Ago
      I love overkill...
      • 7 Years Ago
      One can only imagine the BMW's true potential if they'd decide to mid-engine with anything.

      Dinan can already get McLaren F1 type numbers out of an engine that's two cylinders and almost half a liter down. To think what the wizards at BMW could do...
        • 7 Years Ago
        God Bless the M1
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