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2025 NS

Eccentric 20

A 20″ aluminum frame mountain youth bike with high-end components and hydraulic disc brakes.
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FrameAluminum
SuspensionHardtail, 80mm
ForkRST SPEX
Wheels20″ Aluminum
Drivetrain1 × 10
GroupsetGX
BrakesHydraulic Disc
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Insights
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

15 mph

Eccentric 20

Highest gear

(descending)

Specs
Build
Frame

NS Bikes AL6061-T6 custom formed and butted tubes, 135x10mm dropouts

BB StandardBSA, 68mm, Threaded

Fork

RST Spex 20, 80mm travel, 15x100mm, Air spring, Hydrualic Rebound & Compression Adjust

Travel80mm

Spring TypeAir

Bottom Bracket

BSA square taper 68mm

Headset

integrated tapered IS42/IS52, sealed bearings

Stem

NS Bikes Drop 31.8, 50mm, angle –10°

Handlebar

NS 31.8

Saddle

NS Bikes Junior Rail

Seatpost

Kalloy 31.6

TypeRigid

Pedals

NS Bikes Nylon JR

Grips

ProTaper Junit, reduced grip diameter.

Groupset
Rear Derailleur

SRAM GX 10spd, short cage

Crank

NS Bikes JR 127mm 28t

Shifters

SRAM GX, 10spd

Cassette

SRAM PG 1020 11-36t, 10spd

Chain

SRAM PC1031, 10spd

Brakes

Front: Lanxi Nutt, 160mm, Rear: Lanxi Nutt, 160mm

TypeHydraulic Disc

Wheels
Rims

NS Bikes Junior 20”, 24h tubeless compatible

Spokes

Spokes w/14mm nipples

Front Hub

NS Bikes 100x15mm bolt-on

Rear Hub

NS Bikes 135x10mm thru bolt

Tires

Kenda Small Block 8 20x2.1"

Rider Notes
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First added June 16

Last updated May 30