trail 27.5 plus - intermediate

Eccentric Alu 29

Suggested retail price:
More info



Bike info

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 super strong yet light alloy frame built with a custom tubeset. The 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.


Tough and light alloy frame
Radical geo with slack angles
140mm RS Recon fork
SRAM NX 1x11 drivetrain
X-Fusion dropper post
SRAM Level brakes


SRAM 1x12 drivetrain
Longer wheelbase
X-Fusion dropper post
New lighter fork

note on sizing: we recommend the S size for riders up to 172cm, M size for 170 – 182cm and the L size for riders over 180cm.

Stay true, stay Eccentric! Aggressive modern geometry, very long reach and super slack head angles - the Eccentric bikes are the hardtails of the future.


With the big burly 29” wheels you will roll over everything without thinking twice, but at the same time you get the wonderful feeling of being connected with the trail that only a hardtail can provide. You don’t need a full suspension bike to be fast on the climbs and have fun on the downhills! The Eccentric bikes are available in several versions. If you’re looking for a hard hitter, choose between the Cromo and the Alu based on your preferences of frame materials.For typical trail riding, the Lite versions should be more than enough.



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


Bike Specs

Frame Specs

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

sizes: S,M,L

rear shock: /

forks: Rock Shox Recon 140mm travel, 15x110mm Boost, 1.5 tapered steerer tube

headset: GW integrated tapered IS42/IS52, sealed bearings

stem: Octane One Tone 31.8, 45mm

handlebar: NS Bar, 780mm 12mm rise

grips:  NS Hold Fast

seatpost: X-Fusion Manic internal 125, 150mm

saddle: Octane One Rocket2, CrMo hollow rails

front brake: Sram Level, 180mm

rear brake: Sram Level, 180mm

levers: Sram Level

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

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 Aggressor EXO/TR 29x2.5WT

crankset: Truvativ Descendant PS 170mm 32t

bottom bracket: SRAM Power Spline BSA Bottom Bracket

pedals: /

chain: Sram, 12 spd

chainguide: /

derailleurs: Sram NX Eagle™, long cage, 12spd

shifters: Sram NX, 12spd

cassette: SRAM PG-1230,12spd 11-50t

weight (kg): 13.5

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)


Eccentric Alu 29   S M L
Wheel size 29"
Fork travel 140 140 140
Reach mm 415 435 460
in 16,3 17,1 18,1
FC mm 740 764 793
in 29,1 30,1 31,2
Standover mm 792 815 841
in 31,2 32,1 33,1
Stack mm 627 636 645
in 24,7 25,0 25,4
Effective TT mm 595 617 645
in 23,4 24,3 25,4
Actual TT mm 583 596 618
in 23,0 23,5 24,3
Seat tube mm 407 445 495
in 16,0 17,5 19,5
Chain stays mm 420 420 420
in 16,5 16,5 16,5
BB rise mm -55 -55 -55
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 1179 1208
in 45,4 46,4 47,6