NS Bikes Eccentric CrMo 29" Frame: Black

NS Bikes

499.95 $ 629.99

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A beautiful yet tough hard-tail frame for All Mountain and Trail Riding. NS built this frame using Tange Eccentric Cromoly tubes developed over the years for their dirt-jump bikes. The result is an incredibly strong, yet light hard-tail for aggressive trail riding.

The Eccentric has a radical, modern geometry with a very long reach and a super slack head angle that makes it ideal for anyone who likes to go full gas! This beautiful steel 29'er is built with custom drawn Tange tubes with built-in gussets that we developed ourselves. At around 5 lbs, the frame is light by any standards, but don’t worry, it’s strong enough to hold up to a lot of abuse.

All the knowledge NS has managed to acquire over the years in building steel dirt-jump hard-tails has been funneled into this frame and it really is the very best money can buy. The Eccentric will fly across trails and put the kind of smile on your face that only a hard-tail delivers. 


  • Designed for Trail and All Mountain riding
  • Tange Eccentric cromoly tubes 
  • Compatible with 29” and 27.5+ wheels
  • Boost 148 dropouts
  • Modern aggressive geometry with long reach and slack angles


  • Material: Custom Butted 4130 Cromoly, Tange Eccentric tubes
  • Sizes: 3 frame sizes (16”, 17.5” & 19.5”)
  • Recommended Fork Travel: 130-150mm
  • Head Tube: Integrated Tapered IS42/IS52
  • Fits Forks: Standard 1-1/8” or Tapered 1.5 1-1/8” steerer tubes
  • Head Tube Length: S: 105mm, M: 115mm, L: 125mm
  • BB: Threaded 73mm with ISCG-05 mounts
  • Biggest Chainring: BOOST only up to 32t
  • Front Derailleur: Not Compatible
  • Seat Post/Clamp: 30.9 / 34.9
  • Max Seat Post insertion: 270mm (S) / 300mm (M & L)
  • Cable Routing: Stealth cable route with rubber grommets in seat tube for dropper post
  • Maximum Tire Size Recommended: 29” x 2.4” / 650B x 3.0”
  • Disc Brake: IS-2000 Disc Brake Mount
  • Max Rotor Size: Up to 185mm
  • Hub Spacing: 148x12mm, NS axle included
  • Weight: 2.59kg (M size, w/o axle)