Marin Donky Jr. 20″ 6 2025

2025 Youth
Estimate price | 389$

Bike details

Overview

Key information split into simple groups.

Bike summary

  • Category
  • Frame Aluminum
  • Groupset Tourney
  • Suspension Rigid
  • Drivetrain 1 × 6
  • Brakes Rim

Parts list

Components

Main components, grouped by system.

Bike components

Frame

Frame

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

Suspension Fork

Steel Blade, Rim Brake

Drivetrain

Rear Derailleur

Shimano Tourney 6-Speed

Shift Levers

Shimano Revoshift 6-Speed

Crank

Forged Alloy, 32T, 140mm, Ring Guard

Bottom Bracket

Sealed Cartridge Bearings, Square Taper

Chain

KMC 6-speed

Pedals

Kids Specific Nylon

Wheels

Front Hub

Forged Aluminum Alloy, 32H

Rear Hub

Forged Aluminum Alloy, 32H

Rims

Aluminum, CNC Brake Surface

Spokes

14g Stainless Steel

Tires

Marin/Vee Tire Speedster, 20"x2.0"

Brakes

Brakes

Linear Pull, Alloy

Brake Levers

Kid's Specific Short Reach Alloy Lever

Cockpit

Stem

Alloy, 40mm

Handlebar

Riser, 45mm Rise, 580mm Width

Grips

Single Densitiy

Headset

Threadless

Seat

Saddle

Integrated Saddle/Post

Seatpost

27.2mm, Integrated Saddle/Post

Fit data

Geometry

Numbers for sizing and ride feel.

SizeOne Size
Stack Reach Ratio
1.42 mm
Bottom Bracket Height
253 mm
Rake
25 mm
Stack
419 mm
Reach
295 mm
Top Tube Length
431 mm
Seat Tube Angle
72 °
Seat Tube Length
280 mm
Head Tube Angle
69 °
Head Tube Length
95 mm
Chainstay Length
359 mm
Wheelbase
842 mm
Standover Height
525 mm
Wheels20"