Eccentric Cromo

Suggested retail price:
More info

Product info

The concept of a tough trail hardtail makes a lot of sense for many riders. The Eccentric will cover a lot of ground - epic all-day trips, pump track sessions and everything else in between too. 650B wheels, modern aggressive geometry and good specs make this a simple and beautiful freedom machine.


A beautiful yet tough hardtail frame for all mountain and trail riding. We built this frame using Tange Eccentric cromoly tubes that have been developed over the years for our dirt-jump bikes. The result is an incredibly strong yet light hardtail for aggressive trail riding. The Eccentric is designed primarily for 650B wheels but will work with 26” too. Rides best with a 140-150mm fork. The weight of the frame is approximately 2.4kg which is light by any standards, but thanks to our in depth knowledge of steel frame constructions we know that it will also be strong enough to hold up to a lot of abuse. All the know-how that NS has managed to acquire over the years in building steel hardtails has been funnelled into the frame of this bike and it really is the very best money can buy.


NEW FOR 2016

Eccentric cromo frame feature slightly longer reach, slacker head tube angle, lower bottom bracket and fully integrated taper head tube IS42/IS52. Now fits easily fits forks with both standard 1-1/8” or tapered 1.5 - 1-1/8” steerer tubes

Technical specification

Material: custom butted 4130 cromoly, Tange Eccentric tubes

Frame available: in 3 frame sizes (16”, 17.5” & 19.5”)

Recommended fork travel: 130-150mm

Head tube: integrated tapered IS42/IS52

Fits forks: fits forks with standard 1-1/8” or tapered 1.5 1-1/8” steerer tubes

Head tube length: S size: 105mm, M size: 115mm, L: 125mm

BB: threaded 73mm with ISCG-05 mounts

Biggest chainring: up to ~36t (SRAM XX1 up to 34t)

Front derailleurs: high clamp only, top pull

Seat post/seat clamp: seat post: 30.9 / seat clamp: 34.9

Stealth cable: stealth cable route in seat tube for dropper post

Designed: designed to fit 27.5”/650B but works also with 26” wheels.

Maximum tire size recommended: 2.35”

Disc brake: IS-2000 disc brake mount, max rotor size: up to 185mm

Hub spacing: 142x12mm, NS axle included

Weight: ~2.49kg (M size)


Cromo 29   S M L
Wheel size 29"    
Based on fork travel 140,0 140,0 140,0
Reach mm 415,0 435,0 460,0
in 16,3 17,1 18,1
FC mm 740,0 764,0 793,0
in 29,1 30,1 31,2
Standover mm 792,0 815,0 841,0
in 31,2 32,1 33,1
Stack mm 627,0 636,0 645,0
in 24,7 25,0 25,4
Effective TT mm 595,0 617,0 645,0
in 23,4 24,3 25,4
Actual TT mm 582,0 596,0 618,0
in 22,9 23,5 24,3
Seat tube mm 407,0 445,0 495,0
in 16,0 17,5 19,5
Chain stays mm 420,0 420,0 420,0
in 16,5 16,5 16,5
BB rise mm -55,0 -55,0 -55,0
in -2,2 -2,2 -2,2
Headtube angle 65,0 65,0 65,0
ST angle effective 74,0 74,0 74,0
Wheelbase mm 1154,0 1179,0 1208,0
in 45,4 46,4 47,6