Marin Coast Trail 20" 7 Kids Bike - 2025

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4001979
  • Lightweight Aluminium alloy frame
  • Shimano 7-Speed Drivetrain
  • Rim Brakes with Kid-Specific Levers
Stock Status:
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Built with care: Our mechanics fully assemble your bike before it's carefully packaged and shipped to you.

At Tweeks Cycles, we ensure your bike arrives fully assembled and, most importantly, well packaged so it arrives with you as it left us.

Upon delivery, simply unpack it, attach any included pedals (believe it or not, some bikes don’t come with pedals!), adjust the handlebars, and you're ready to ride!

It’s all super simple!

BUT! Please take extra care when fitting any pedals that are provided with your bike. Pedals are side specific and MUST be fitted to the correct side of the bike. They are usually clearly labelled Left and Right. Failure to do so will permanently damage the bike, void the bikes warranty and lead to many tantrums, for children or grown children alike!

Comprehensive 14-Point Inspection

Each bike undergoes a meticulous 14-point inspection to guarantee optimal condition and performance:

  • Ensure Cycle is free of any mechanical damage, paint chips or missing parts
  • Grease seat tube, secure seat clamp, make sure the saddle is level and ensure all fixings are secure
  • Ensure handlebar, stem and brake/gear levers are secured
  • Assess headset for play or tightness
  • Ensure handlebar tape or grips are fitted securely
  • Ensure wheel nuts, quick-release levers or through axles are tightened (please note: some adult mountain bikes come with the front wheel removed for transport), true the wheels for optimal alignment and check wheel bearings for proper adjustment
  • Inflate tyres to the correct pressure
  • Ensure front and rear brakes operate correctly. Bleed hydraulic brakes if required
  • Ensure pedal threads are greased
  • Test all gears to ensure smooth operation
  • Check suspension system for correct operation and ensure bolts are tight (if required)
  • Ensure smooth bottom bracket rotation with no free play and secure crank bolts
  • Check cable/house routing and that cable ends are fitted
  • Install reflectors and bell

This thorough process ensures your bike is in peak condition upon arrival. We do not fit mudguards or other accessories prior to shipping as these are likely to be damaged in transit.

Note on Electric Bikes

Due to shipping restrictions, in some circumstances you may receive your new electric bike and its battery separately. This is due to carriage restrictions on some removable batteries.

Note on Balance Bikes

Balance bikes are shipped unassembled, allowing you to enjoy the building experience and retain the original packaging-perfect for gifting.

Details

The Marin Coast Trail 20" 7 Kids Bike offers young riders lightweight performance with its durable Aluminium frame and smooth 7-speed Shimano drivetrain. Designed for comfort and control, this bike helps your child build confidence on rides to school, the park, or around the neighbourhood.

Key Features and Benefits:

  • Lightweight Aluminium Frame and Fork: Built with Series 1 Aluminium, this frame is easy to handle and control. The reduced weight lets kids focus on their ride, not on managing a heavy bike.
  • Dependable Shimano 7-Speed Drivetrain: Smooth gear shifting makes climbing hills and cruising flat terrain effortless. This feature empowers young riders to tackle diverse paths.
  • Smooth-Rolling 2.0" tyres with Inverted Tread: Marin x Vee tyre tyres deliver excellent grip and stability. This ensures safer and more enjoyable rides on various surfaces.
  • Kid-Sized Components: Smaller handlebars, grips, pedals, and brake levers are Tailored to young riders. This design ensures comfort and better handling.
  • Short-Reach Microshift TS39 Shifter: Specially designed for kids, this easy-to-use shifter simplifies gear changes. It makes riding more intuitive and less frustrating.
  • Forged Alloy Crankset with Chain Guard: Durable and lightweight, the crankset includes a ring guard for safety. This feature protects against accidental chain slips.
  • Rim Brakes with Kid-Specific Levers: Alloy linear-pull brakes ensure dependable stopping power. The levers are sized perfectly for small hands, boosting confidence in braking.

The Marin Coast Trail 20" 7 Kids Bike supports your child’s growth as a rider. The lightweight frame, reliable drivetrain, and kid-specific components provide a safe, comfortable, and efficient cycling experience. This bike is built for young riders ready to take their skills to the next level.

Take the first step toward giving your child an exceptional riding experience. With its practical design and thoughtful features, the Marin Coast Trail 20" 7 is ready to ride whenever they are.

Size - Rider height range:

  • One Size - 3'5" to 4'7"
Specification

FrameSeries 1 Lightweight Aluminum, Low Standover, 20” Wheels, Replaceable Derailleur Hanger, Rim Brake
ForkSeries 1 Aluminum , Rim brake
RimAluminum, CNC Brake Surface
Hub RearForged Aluminum Alloy, 28H
Hub FrontForged Aluminum Alloy, 28H
Spokes14g Stainless Steel
TiresMarin X Vee Tire Co. Speedster, 20x2.0”
Derailleur RearShimano Tourney, 7-Speed
Shift LeverMicroshift TS39 Short-Reach 7-Speed
CranksetForged Alloy, 34T, 140mm, Ring Guard
Bottom BracketSealed Cartridge Bearings, Square Taper
ChainKMC 7-Speed
CassetteSunRace, 7-Speed, 11-34T
Brakes FrontLinear Pull, Alloy
Brakes RearLinear Pull, Alloy
Brake LeversKid's Specific Short Reach Alloy Lever
HandlebarMarin Riser, 50mm Rise, 580mm Width, 19mm OD Grip Section
StemAlloy, 40mm
GripsSingle Densitiy, Thin Diameter Grip
HeadsetThreadless
SeatpostAluminum, 27.2mm, Integrated Saddle/Post
SaddleMarin 20" Integrated Saddle/Post
PedalsKids Specific Nylon Pedal

Colour Silver / Black, Teal / Silver

BrandMarin Bikes
MPN(s)737548001, 737549001

Customer Reviews
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Finance

Our Payment Options

Maestro Mastercard Visa PayPal V12 Retail Finance

Online we currently accept payment from the methods listed above including a wide range of finance options. In store we also accept payment in the form of cash and gift vouchers.

Finance Options

In order to get the kit you want, when you need it, without ruining the family finances we offer a highly flexible range of finance options to help you get the best products on your bike now rather than at the end of the season when you've saved up the cash to make the purchase. There are even interest free options which effectively spread the cost without costing you any extra.

D.T.(Automotives) Limited T/A Tweeks Cycles is authorised and regulated by the Financial Conduct Authority and is the broker and not the lender. Our FCA registration number is 689896. D.T.(Automotives) Limited offers credit products from Secure Trust Bank PLC trading as V12 Retail Finance and Klarna. Credit is provided subject to affordability, age and status. Minimum spend applies. Not all products offered by Secure Trust Bank PLC are regulated by the Financial Conduct Authority.

Delivery & Returns

UK Mainland Delivery Prices

Delivery Type Cost Estimated Delivery Time
Standard Delivery for orders under £49.99 from £1.33 2-3 working days from day of despatch(Excludes weekends and Bank Holidays)
Standard Delivery for orders over £49.99 Free
Bike Delivery Free 3-5 working days from day of despatch *(Excludes weekends and Bank Holidays)
Express Delivery from £1.68 1-2 working days from day of despatch(Excludes weekends and Bank Holidays)
Special Delivery from £12.54 For any next working day delivery order before 4.30pm Monday to Thursday.
For any weekend delivery order before 4.30pm Friday

* Bike Delivery Info

A bike has to go though a Pre Delivery Inspection (PDI Check) prior to despatch, ensuring the bike is thoroughly checked and set up prior to you receiving. This also means an express delivery service is unavailable. We strive to despatch bikes within 3-5 working days. Please note this may change over school holidays and the festive season (November/December). For more information on the process please visit our pre-build page.

For international shipping please visit our delivery page.

For information about returning an item please visit our returns page.