ShoeGeometry

New Balance FuelCell Rebel v5 vs Nike Zoom Fly 6

Two popular shoes in the same category, compared on measured geometry. Each cell carries a provenance badge; open a shoe for sources.

heel boneNew Balance FuelCell Rebel v5: heel 35 mm, forefoot 29 mm (drop 6 mm); toe rocker 36 % of length, radius 44 % of length; heel bevel 12 % of length, 22 mm high at the back, ending about under the heel bone.New Balance FuelCell Rebel v5: toe rocker 36 % of lengthNike Zoom Fly 6: heel 40 mm, forefoot 32 mm (drop 8 mm); toe rocker 41 % of length, radius 55 % of length; heel bevel 13 % of length, 16 mm high at the back, ending about under the heel bone.Nike Zoom Fly 6: toe rocker 41 % of length
  • New Balance FuelCell Rebel v535/29 mm · toe rocker 36 % · heel bevel 12 %
  • Nike Zoom Fly 640/32 mm · toe rocker 41 % · heel bevel 13 %
Illustrative profiles, not photographs: drawn from published stack heights and photo estimates of the unloaded shoes on a common length (300 mm), heels aligned, toe to the left; dots mark where each toe rocker starts; the dotted vertical line is under the heel bone (12 % of length), so a heel curve reaching past it is a bevel in front of the heel bone. Dotted lines use typical values where a shoe has no measurement. Exact values are in the table below.

Which suits you

If you wantPickBecause
A smoother roll at toe-offNike Zoom Fly 636 vs 40.6 % toe rocker
More cushioning under the heelNike Zoom Fly 635 vs 40 mm heel stack
More under the forefootNike Zoom Fly 629 vs 32 mm forefoot stack
A lower dropNew Balance FuelCell Rebel v56 vs 8 mm drop

From the values below, with differences inside measurement noise shown as about the same. This describes the shoes, not what is right for your feet; comfort in the first few runs decides.

MetricNew Balance FuelCell Rebel v5
Tempo · Road
Nike Zoom Fly 6
Tempo · Road
Heel-to-toe drop6 mmStated8 mmStated
Heel stack35 mmStated40 mmStated
Forefoot stack29 mmStated32 mmStated
Weight215 gStated265 gStated
Toe rocker36 %est.41 %est.
Rocker radius44 %est.55 %est.
Rocker rise angle30 degest.26 degest.
Rocker angle at toe61 degest.59 degest.
Toe tip over ground44 mm*est.44 mm*est.
Visible rocker lift onset72.4 %est.71.3 %est.
Toe spring (relative)19.9 %est.19.4 %est.
Heel bevel length11.5 %est.12.8 %*est.
Heel bevel height22 mm*est.16 mm*est.
Midsole width (forefoot)—111.9 mmMeasured
Midsole width (heel)—87.9 mmMeasured
Toe box shape78 %*est.75 %*est.
Interior forefoot width—90.9 mmMeasured
Toebox width—72.6 mmMeasured
Longitudinal stiffness—71Derived
Midsole firmness—62Derived
PlateNo plateCarbon plate
Primary foamFuelCell (PEBA/EVA blend)ZoomX + SR-02
List price$140$180

Key differences

  • New Balance FuelCell Rebel v5's heel-to-toe drop is 6 mm, 2 mm lower than Nike Zoom Fly 6's 8 mm.
  • New Balance FuelCell Rebel v5's heel stack is 35 mm, 5 mm thinner than Nike Zoom Fly 6's 40 mm.
  • New Balance FuelCell Rebel v5's forefoot stack is 29 mm, 3 mm thinner than Nike Zoom Fly 6's 32 mm.
  • New Balance FuelCell Rebel v5's weight is 215 g, 50 g lighter than Nike Zoom Fly 6's 265 g.
  • New Balance FuelCell Rebel v5's toe rocker is 36 % of length, 5 % of length shorter than Nike Zoom Fly 6's 41 % of length.

Read more about both shoes

We measure the shape. For how they feel over many miles, and for lab tests of cushioning, grip and fit:

New Balance FuelCell Rebel v5

Nike Zoom Fly 6

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New Balance FuelCell Rebel v5 details · Nike Zoom Fly 6 details · Add more shoes