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  1. #1
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    2018 Rocky Instinct Weight Weenie Build

    Itís hard to find people building light AM bikes, and weights in general are hard to come by as seems most just accept bikes in the 29-31lb range. Manufacturers also do a terrible job of posting and a lot of these modern carbon trail bikes are heavy AF and not much lighter than their aluminum counterparts.

    Anyhow, the instinct is pretty damn light and coming from a proper XC race rig (Norco Revolver FS) I'm looking to build a more North Shore capable bike that can still climb fast when I want it to. Having demo'ed one of these, the bike pedals incredibly given the travel so should fit the bill as my quiver killer.

    Building this with two wheelsets, one for more AM riding with DHFs, and some carbon wheels for more xc stuff.

    Target weights in an XL are 26.5-27lbs in AM mode and 25.5 lbs in XC mode.

    Iíll post more pics as the build comes together.

    2018 Rocky Mountain Instinct C70 frame, axle, all pivot HW size XL- 2520 grams
    2018 fox performance elite fork 140mm - 1840 grams
    2018 dps evol 210x55 - 267 grams
    Shock bushings: 35 grams
    Next SL crank: 440 grams

    AM Wheels: I9 Trail - 1660 grams
    DHF Front - 940 grams
    Nobby Nic Trail Star Rear - 785 grams

    XC Wheels: Either stans valor or lace some hubs into Roval Control SL rims I have. ~1420 grams
    NN Front and Rear - 785 grams a piece

    More to come

    2018 Rocky Instinct Weight Weenie Build-img_4785.jpg

    2018 Rocky Instinct Weight Weenie Build-img_4789.jpg
    2018 Rocky Instinct Weight Weenie Build-img_4790.jpg
    2018 Rocky Instinct Weight Weenie Build-img_4791.jpg
    Last edited by arzt506; 4 Weeks Ago at 01:45 PM.

  2. #2
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    Should be an interesting build.

  3. #3
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    Just a data point and not totally apples to apples, but my '16 18.5" aluminum Trek Fuel EX 9 with 29er 29mm IW Carbon fan wheels, tubeless 2.4" tires, Stealth dropper is is 28.3 lb. That's with no effort to thought going to lightweight parts, and a steel chainring.
    Do the math.

  4. #4
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    Quote Originally Posted by Lone Rager View Post
    Just a data point and not totally apples to apples, but my '16 18.5" aluminum Trek Fuel EX 9 with 29er 29mm IW Carbon fan wheels, tubeless 2.4" tires, Stealth dropper is is 28.3 lb. That's with no effort to thought going to lightweight parts, and a steel chainring.
    That's pretty good. That's including pedals? How much do those wheels weight?

  5. #5
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    I think it's good manufacturers are making their carbon a bit beefier.

  6. #6
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    Quote Originally Posted by arzt506 View Post
    That's pretty good. That's including pedals? How much do those wheels weight?
    With Spank Oozy pedals. Complete wheelset is 1632gm with Carbon Fan rims, SRAM 900 hubs and 28 spokes each. .
    Do the math.

  7. #7
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    What tires for your XC wheelset?

  8. #8
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    Good choice! RM bikes are excellent!!

    I have a 27 lb. Marin MV9. It's been an excellent bike and light enough for some good climbs. But I will say, that RM will out climb my lighter bike.

    Sent from my SM-G950U using Tapatalk

  9. #9
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    Very interested to see how you build it out.
    Glad you are sharing this with us, the Instinct is an awesome bike and pedals way better than I expected it to (demo).
    I'm sure that bike would rip at the BC Bike Race in your XC configuration.

  10. #10
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    Throw a Ron or Ralph on the rear & keep NN up front on XC build.. good way to lose another half pound

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