trail 27.5 plus - intermediate

Eccentric Alu 29

More info



Bike info

Tough and light alloy frame
Radical geo with slack angles
rock shox Recon boost 140 mm
X-FUSION MANIC dropper post
Shimano deore crankset

Stay True, stay eccentric! Radical, modern geometry with a very long reach and a super slack head angle make this bike ideal for anyone who likes to go full gas! The bike is built around a strong and light alloy frame built with a custom tube set. Big wheels, plenty of fork travel and dropper post that is included in the package will help you fly down the steepest descents with confidence. If you are a hardtail junky, this is the machine for you.


”It has a very agile handling which is perfect for flowy trails.” -



Bike Specs

Main features

Frame Specs

Media Review

frame: NS Bikes AL6061-T6 custom formed and butted tubes, Boost 148x12 dropouts

sizes: S,M,L

rear shock: /

forks: RockShox Recon 140mm travel, 110x15mm Boost, 1.5T, 44mm offset

headset: GW integrated tapered IS42/IS52, sealed bearings

stem: Octane One Tone 31.8, 45mm

handlebar: NS Bar 31.8, 780mm 20mm rise

grips:  NS Hold Fast

seatpost: X-Fusion Manic internal S,M: 125, L:150mm

saddle: Octane One Rocket2, CrMo hollow rails

front brake: Shimano MT410, 180mm

rear brake: Shimano MT410, 180mm

levers: Shimano

rims:  Octane One Solar 29”, 32h, tubeless compatible

spokes: Spokes w/14mm nipples

front hub:  NS Rotary 15 Boost 15x110 disc (sealed bearings)

rear hub:  NS Rotary Cassette 148x12mm Boost (sealed bearings)

tires front / rear: Maxxis DHF EXO/TR 29x2.5" WT / Maxxis Aggressor EXO/TR 29x2.5" WT

crankset: Shimano Deore FCMT5101 170mm 32t

bottom bracket: Shimano BSA 73mm

pedals: /

chain: Shimano, 12spd

chainguide: /

derailleurs: Shimano Deore M6100, 12spd

shifters: Shimano Deore M6100, 12spd

cassette: Sunrace CSMZ800, 12spd 11-51T

weight (kg): 13.8 (M size, tubeless setup)

Specifications subject to change without notice. Actual colours and design may vary slightly from the images on the website.

Tubes: AL6061-T6, custom formed and butted tubes

Recommended fork travel: 120-140mm

Head tube: integrated tapered IS42/IS52,

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

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

BB: threaded 73mm

Biggest chainring: boost only up to 32t (SRAM XX1 up to 30t)

Front derailleurs: -

Seat post/clamp: seat post: 31.6 / seat clamp: 34.9

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

Wheel/tyres: designed to fit 27.5”+/650B+ but works also with standard 29” wheels width tyres up to 2.3“

Maximum tire size recommended: 29” x 2.3”, 27.5”+/650B+ x 3.0”

Disc brake: post mount brake mount

Hub spacing: 148x12 dropouts

Weight: ~2.3kg (M size)


Most progressive frame geometry on the market.



Tange eccentric cromoly tubes (eccentric cromo).


NS Bikes aftermarket components in unique finishes.

Mountain Bike Magazin: Eccentric Alu 29 (de)


Eccentric Alu 29   S M L
Wheel size 29"
Fork travel 140 140 140
Reach mm 425 450 475
in 16.7 17.7 18.7
FC mm 760 779 809
in 29.9 30.7 31.9
Standover mm 745 767 802
in 29.3 30.2 31.6
Stack mm 641 641 650
in 25.2 25.2 25.6
Effective TT mm 609 634 662
in 24.0 25.0 26.1
Actual TT mm 583 603 629
in 23.0 23.7 24.8
Seat tube mm 412 450 500
in 16.2 17.7 19.7
Chain stays mm 430 430 430
in 16.9 16.9 16.9
BB rise mm -60 -60 -60
in -2.4 -2.4 -2.4
Headtube angle 65,0 65,0 65,0
ST angle effective 74,0 74,0 74,0
Wheelbase mm 1183 1203 1232
in 46.6 47.4 48.5