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The VX Carbon is back in stock - 4,000 km wear-tested, 42% energy return

Kinetik
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Kinetik VX Carbon race shoe on a track surface

Race Season 2026

Every gram is evidence

The VX Carbon returns 42% of the energy you put into it and weighs 184g in a US 9. Wear-tested over 4,000 km on Boulder dirt before it ever reached a shelf.

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Measured energy return
42%
Athlete testing per year
40,000 km
Sponsored athletes
19

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The offer

Free 2-day shipping over $75 · 90-day performance guarantee

  • Kinetik Track Club meets Tuesdays, 6am, Boulder Reservoir
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Marathoner Dessa Kirui training on the Boulder Creek Path

Athlete Story

Dessa Kirui ran 2:21:04 in a shoe nobody had seen

Dessa spent nine months on VX Carbon prototypes, logging 2,840 km and rejecting four midsole iterations before she took version five to Chicago and cut ninety-one seconds off her personal best. The plate geometry she asked for - 3mm narrower through the forefoot - is the one you buy today.

“I put 640 km on a single pair of Meridian trainers through a Boulder winter and the midsole still measured within 4% of its out-of-box rebound. That has never happened to me with another shoe.”
Dessa KiruiMarathon · 2:21:04 PB · Kinetik athlete since 2022
Meet the roster

Just out of testing

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The Lab

4,000 km before it earns a name

Nothing ships until it has survived a full test block: 4,000 km of mixed-surface wear, 300 hours on the flex rig, and a 48-hour salt-and-sweat soak at 35°C. We publish the failure rate of every batch, including the ones we scrapped.

Inside the lab

  • 42% energy return

    Measured on a mechanical rig at 3.2 m/s, not estimated from a foam spec sheet.

  • Athlete-tested, athlete-approved

    Nineteen sponsored athletes log 40,000+ km a year on product before it launches.

  • 90-day performance guarantee

    Train in it for three months. If it breaks down early, we replace it and publish why.

From the field

Verified purchases

  • Rated 5.0 out of 5

    640 km and the foam has not gone flat

    I rotate the Meridian through every easy day of a marathon block and measured the rebound myself at 640 km - still within 4% of new. The 10mm drop is forgiving at the end of a 35k when my form starts to fall apart.

    Dessa K.Boulder, CO · March 8, 2026Verified
  • Rated 5.0 out of 5

    The tight does not migrate. At all.

    Twelve weeks of heavy cleans and box jumps and the waistband has never rolled once. Compression still holds at the calf after about forty washes, which is more than I can say for the pair I replaced.

    Naomi R.Austin, TX · February 21, 2026Verified
  • Rated 4.0 out of 5

    Eleven hours of sleet, still dry

    Wore the Stormline through the back half of a 100k in horizontal rain and stayed dry under it. Docking one star because the hood is cut tight over a cap - size up if you run in a visor.

    Jonas W.Bend, OR · January 30, 2026Verified

The Split

Training data, twice a month

Test results, race reports from the roster, and the occasional workout you can actually use. No countdown timers, no fake scarcity.