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. Paired with some really sexy tanwall tires and components in our new 'oil rub' finish, this bike not only rides like a dream but also looks very unique.


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

- available sizes: S (16") /M (17.5") /L (19.5") 


weight: 13.5 kg
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.

Aggressive modern geometry, very long reach and super slack head angles - these really are hardtails from the future. Choose any bike within the range and we guarantee you will immediately fall in love. The Cromo and Alu are designed for aggressive riders and equipped with long travel forks and dropper posts. Just decide if you prefer the beautiful steel frame built with custom drawn Tange tubes or the light and tough alloy platform. Those looking for a lightweight all-round trail bike should check out the Eccentric Lite. With it's radical geometry this bike is really different than any other trail hardtail out there.

Bike Specs

Frame Specs

Frame: NS Bikes 6061-T6 custom formed and butted tubes, Boost 148x12 dropouts

Sizes: S,M,L

Forks: Rock Shox Recon 140mm travel, 15x110mm Boost, alu taper steering tube

Headset: GW integrated tapered IS42/IS52, sealed bearings

Stem: NS Tone 31.8, 45mm

Handlebar: NS Bar, 760mm 12mm rise

Grips: NS Hold Fast

Seatpost: Kind Shock E30i-S Stealth dropper-post, 125mm travel, 31.6

Saddle: Octane One Rocket CrMo hollow rails

Front brake: Sram Level, 180mm

Rear brake: Sram Level, 180mm

Levers: Sram Level

Rims: Octane One Solar 29” 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: WTB Trail Boss 29x2.4 foldable bead TCS Light/Fast Rolling Dual DNA Compound, Lightweight Skinwall

Crankset: SR Suntour Zeron 1X AX-S-BT-30t 175mm

Bottom bracket: SR Suntour Euro BB BSA

Chain: Sram, 11 spd

Derailleurs: Sram NX Type 2.1, long cage, 11spd

Shifters: Sram NX, 11spd

Cassette: Sun Race CSMS7 11spd 11-42t

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 Cromo   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