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2025 Marin

COAST TRAIL 20

A 20″ aluminum frame mountain youth bike with mid-range components and rim brakes.
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Manufacturer Price

$599
FrameAluminum
SuspensionRigid
ForkAluminum
Wheels20″ Aluminum
Drivetrain1 × 7
GroupsetTourney, microSHIFT Mezzo
BrakesRim
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Insights
Ride Feel

Based on frame geometry and build specs.

Handling
nimblestable
COAST TRAIL 20
Other Mountain Youth bikes
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)

18 mph

COAST TRAIL 20

Highest gear

(descending)

Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

Price History
Geometry
Specs
Build
Frame

Series 1 Lightweight Aluminum, Low Standover, 20” Wheels, Replaceable Derailleur Hanger, Rim Brake

ColorGreen

Fork

Series 1 Aluminum, Rim brake

Bottom Bracket

Sealed Cartridge Bearings, Square Taper

Headset

Threadless

Stem

Alloy, 40mm

Handlebar

Marin Riser, 50mm Rise, 580mm Width, 19mm OD Grip Section

Saddle

Marin 20" Integrated Saddle/Post

Seatpost

Aluminum, 27.2mm, Integrated Saddle/Post

TypeRigid

Pedals

Kids Specific Nylon Pedal

Grips

Single Density, Thin Diameter Grip

Groupset
Rear Derailleur

Shimano Tourney, 7-Speed

Crank

Forged Alloy, 34T, 140mm, Ring Guard

Shifters

Microshift TS39 Short-Reach 7-Speed

Cassette

SunRace, 7-Speed, 11-34T

Chain

KMC 7-Speed

Brakes

Linear Pull, Alloy

TypeRim

Brake Levers

Kid's Specific Short Reach Alloy Lever

Wheels
Rims

Aluminum, CNC Brake Surface

Spokes

14g Stainless Steel

Front Hub

Forged Aluminum Alloy, 28H

Rear Hub

Forged Aluminum Alloy, 28H

Tires

Marin X Vee Tire Co. Speedster, 20x2.0”

Rider Notes
Riders Also Viewed

First added December 20

Last updated May 19