4iiii Precision 2.0 3D Power Meter - 105 5800 - Silver $340.49 Delivered (RRP $704.99) @ ProBikeKit

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2ndeffort on 23/01/2019 - 20:59 probikekit.com.au (478 clicks)
Last edited 24/01/2019 - 01:03 by 1 other user

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Saw the other Power Meter deal and thought this might be worth adding. For anyone who doesnt understand what this is it is a crankarm for a road racing bicycle that contains a strain gauge and can keep track of how much power you are generating through your legs (well, as it is only for the left crank, 1 leg). This suits a 105 5800 groupset and it looks at time of posting as if they have a few crank lengths still available.

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  snoopdogg on 23/01/2019 - 21:36

  this is a deal… got one cheers mate ! time to get back on the bike!!!!!#@ and analyse my nasty data

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  BuyoTheCat on 23/01/2019 - 21:47

  Its over 9000!!!!!

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  8azinga on 23/01/2019 - 22:04

  Don't think it was $704.99. That's their listed RRP and they PBK usually sell it for less than RRP. I would have thought it was around the low $500 range before they dropped to this.

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  clandestino on 23/01/2019 - 22:11

  +4

  As with all bike related equipment, it is priced to suit the middle aged professional who wants the very best and is happy to pay for it!! ;)

  • 

    2ndeffort on 23/01/2019 - 22:32

    +4

    The whole industry depends on it!!

  • 

    snoopdogg on 23/01/2019 - 22:38

    It's all true… we had a charity ride at work and everyone that showed up was a dad with a kid who was a doctor and stuff. bunch of lameos, but I do enjoy my petrol saving by riding into work and weekend mt dandenong rides

  • 

    Merlict on 23/01/2019 - 23:34

    But at least we can pick it up dirt cheap used when they move on to a new toy

    • 

      2ndeffort on 24/01/2019 - 10:06

      Normally onto the next super bike

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  Zippy7 on 23/01/2019 - 22:26

  Shame I bought the black 105 version when it was $500…
  I suppose it doesnt matter what colour it is if it doesn't match what you have…

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  fertiliser on 23/01/2019 - 22:32

  nice price
  i grabbed a black one at the end of last year. It took a month to arrive, with PBK refusing to even look into it until 30 days had passed. Won't be ordering from them again

  btw if you're wondering what size to get, the size of your current crank arm is probably written on the side facing the bike

  • 

    8azinga on 23/01/2019 - 23:00

    Pretty standard with international shipping. Even Australia Post will only accept a missing claim form for international economy air items if it has been more than 30 days.
    That means probikekit can't initiate anything until after the 30 days as the use Aus post.

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  [Deactivated] on 23/01/2019 - 22:42

  Super good price!!! I got this powermeter on ultegra crankarm a few years ago and works great!

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  Salmando on 24/01/2019 - 00:16

  Seems expensive, as in expensive for it's function, which I'm having a hard time understanding. Please help

  • 

    2ndeffort on 24/01/2019 - 10:14

    +1

    Powermeters often sell for over $1K. This type replaces the crankarm on your bike with a crankarm containing a strain gauge. What this does is measure how much power your legs are generating. For a casual cyclist or a commuter or someone who rides the bikepaths with the kids this is massive overkill. For somebody training to ride 3 peaks or compete in crits training with a powermeter is a valuable training tool. Knowing how much power you are generating is very handy to see if you are improving, to see how much effort you ae expending and to track your progress/effort. I know that I track my 'Functional Threshold Power' (FTP) which is a measure of how long you can hold a certain level of power output. In practice I find it useful both for training and on rides. My bike computer (Garmin 520) can be setup to show me the live power output (over a few seconds average). At the start of rides or races I use this along with my heartrate to essentially 'pace' myself. It is always tempting to go out very hard while you are fresh and then crash massively on a climb a couple of hours in. I know from training where my limits are that if I exceed certain thresholds i will start dipping into my reserves and it will cost me later on.

    This version is for a 105 crankarm. If you have a different groupset on your bike you would need a different version. Similarly this is for the Silver version, I think 105 comes in silver and black colours. if you have a black crankset you would probably want the black version of this.

    • 

      justtoreply on 24/01/2019 - 11:30

      Ok. But strain gauges are dirt cheap, just so you know.

      Metal machining is cheap too when not custom. Which this isn't.

      Just saying.

      • 

        2ndeffort on 24/01/2019 - 15:49

        +1

        How much does Shimano charge for a 105 crank arm? Also, these are relatively niche bits of kit, only serious cyclists or racers would buy these, they arent intended for the general population, they are enthusiast level products for a very specific niche of road cyclists. The production runs wouldnt be huge and there are loads of different groupsets on the market. To match up with the rest of your bike you need a crankarm with a powermeter from; Shimano, SRAM, Rotor, FSA, Cannondale, Specialized, Praxis etc etc. Niche kit, small runs!!

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  Phoebus on 24/01/2019 - 00:42

  Just calculate power using your weight, incline and speed.

  • 

    PotPlant on 24/01/2019 - 03:31

    +1

    I think strava does that. This is a little more accurate. :)

  • 

    damion on 24/01/2019 - 10:48

    You forgot wind.

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  sircamel on 24/01/2019 - 09:43

  +1

  Argh so tempted. No way to get past finance minister though

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  BamBam cheapsk8 on 24/01/2019 - 10:23

  do the more expensive PM have more power?

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  bargaino on 24/01/2019 - 12:45

  Why are all the power meters so expensive still?
  Strain gauges are used in electronic scales, and cost a few dollars for high-end.

  Maybe soon these will be mass produced, as they are useful in electric bikes, for a mode where the the motor matches your effort.

  I suppose for fitness tracking purposes, a heart-rate monitor makes more sense, and these have limited use for amateur athletes. Still, more gadgets is always good.

  • 

    2ndeffort on 24/01/2019 - 15:29

    Probably still expensive because of the specific matching crank arm that they are attached to. I dont know what a 105 crank arm sells for on its own but probably a large chunk of the $$

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      damion on 24/01/2019 - 16:44

      Nah, left side cranks are cheap.
      I think the high prices are due to.
      a) the fact that the market will pay it
      b1) the fact that shimano changes colour/design of cranks regularly, and the power meter companies then have a level of risk with quantity of manufacture.
      b2) additionally, although shimano road cranks are probably the most popular, most power meter companies still make other brand and less popular sizes. I'd expect those costs are absorbed by the most popular shimano road cranks.
      c) the actual R&D. In theory, these things are simple, but in reality, a lot of brands are significantly more consistent, accurate and/or precise than others.