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  • NS Bikes Quantum Big Stem 2014
  • NS Bikes Quantum Big Stem 2014
  • RRP$90.49
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NS Bikes Quantum Big Stem

The brand new Quantum stem comes in 25.4 and 31.8 sizes. The small version, with it’s 37mm extension makes it ideal for modern dirt jumpers, whereas the big version with a 45mm extension is perfect for freeride or enduro use. Both sizes are very light, feature a knee friendly steer tube clamping 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
  • 6 mm bolts with 6mm Allen hex sockets – strong & light.
  • extensive CNC machining
  • weight: 25.4: ~162g, 31.8: ~188g

Buy NS Bikes Quantum Big Stem from Chain Reaction Cycles, the World’s Largest Online Bike Store.

  • Colour: Blue, Black, Teal
  • Length: 45mm
  • Material: Alloy
  • Diameter: 31.8mm
  • Steerer Diameter: 1.1/8"
Rated 4.7 out of 5 by 3 reviewers.
Rated 5 out of 5 by Looks great, nice and solid. I fitted this stem to my Norco Sight along with some riser bars to bring the cockpit a little closer which makes the rough stuff and downhill a little more comfortable. Certainly does that, while looking beasty and feeling rock solid. 14 September 2014
Rated 5 out of 5 by A TRUE NS FAN i have always loved ns bikes since riding a suburban frame back in 2009 after being inspired by martin soderstrom. I have recently got back into all mountain riding and equipped my bike with this stem, evidence bars and aerial pedals ( both which are great too) to make it feel like my old jump bike and its worked well (god i miss that bike) The quality is instantly obvious out of the box and looks great, follow the fitting instructions and carefully maybe borrow a toque wrench from your lbs to make torque settings correct. A very unique stem and every one where I work wants one too :) it feels very stiff and and has improved my steering greatly. great weight too! thankyou ns bikes, i will be purchasing the ns eccentric frame when i have the money! The brand is highly overlooked in the uk and only looked upon by previous customers. as quoted from there website ''I think that another thing that defines NS is that it's a company dedicated to making highly specialised products for a narrow group of customers. That means that we doubt whether NS will ever be the choice of the “Hey, I want to buy a mountain bike because it’s cool” customer. The beginner rider probably won't appreciate the details that make our products special either. And it means that you can be pretty sure that if you meet someone on an NS, they will speak the same language as you do, no matter what country they come from. In the future, we hope that people will shake their heads the next time we show them our new design. It means that we are still thinking different. And that’s good.'' 09 May 2014
Rated 4 out of 5 by design deco au top attention la verte clair est verte fluo !! elle tourne même au jaune fluo!! 16 April 2014
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