• NS Bikes Quantum Big Stem 2014

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NS Bikes Quantum Big Stem

The brand new Quantum stem comes in 25. The small version, with it’s 37mmextension makes it ideal for modern dirt jumpers, whereas the big version with a 45mm extensionis perfect for freeride or enduro use.

Both sizes are very light, feature a knee friendly steer tubeclamping design and a ‘No gap’ clamping system that gives a unique smooth look.


  • 6061 T6 Alloy, fully CNC machined huge flat and very low profile platform
  • material: cold-forged 6061 T6 Alloy
  • reach: 25.4: 37mm/1.4”, 31.8: 45mm/1.8”
  • rise (center of the bar): 25.4: 18mm/0.7”, 31.8: 20mm/0.8”
  • stack: 37mm
  • 6mm bolts with 6mm Allen hex sockets – strong & light.
  • extensive CNC machining
  • weight: 25.4: ~162g, 31.8: ~188g

Buy NS Bikes Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

  • Delivery costFREE
  • Delivery toUSA
  • 365 Days return or exchange

    If you're not completely satisfied with an item you may return it within 12 months of purchase. We'll give you a full refund if the item hasn't been used or the component hasn’t been fitted.

    More information on returns
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Buying Guide

  • We've got everything you need to know in our buying guide.

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