# Children's bicycle Martes Ninja size 20, wheel 20"

**URL:** https://aio.lv/en/product--martes-m000253859--11450850
**Data updated:** 2026-03-11 13:37 (EET)
**Category:** Kids’ Bicycles
**Manufacturer:** Martes
**Manufacturer code:** M000253859
**EAN:** 5902786420582
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

Children's bicycle Martes Ninja with 20" wheels designed for young riders. This model provides a standard children's bike frame and 20-inch wheel diameter suitable for older kids learning to ride or cycling on paved and light off-road surfaces. Key features include child-oriented geometry, scaled controls and pedals, and a lightweight construction for easier handling and maneuvering.

## Long description

Children's bicycle Martes Ninja size 20 with 20" wheels is designed for older children who are developing confidence and skill on two wheels. The bike features a child-oriented frame geometry, scaled controls and pedals, and a lightweight construction that makes mounting, steering and maneuvering easier for young riders. With 20-inch wheels the model is suitable for paved roads, bike paths and light off-road trails commonly used by children.
Advantages
The Martes Ninja combines a frame sized for children with ergonomically positioned handlebars, brakes and saddle to support safe riding posture. Its 20" wheel diameter balances stability and agility, allowing smoother rolling over small obstacles while remaining responsive to steering input. Lightweight components reduce the physical effort required to start and stop and simplify handling during turns and when lifting the bike. Scaled pedals and grips ensure more secure foot and hand placement for smaller feet and hands.
Suitable for
 Children transitioning from smaller bikes to 20" wheel size
 Riding on paved streets, bike paths and school routes
 Light off-road riding on compact trails and park paths
 Learning to build balance, braking and shifting skills
Key specifications
 Wheel diameter: 20 inches
 Frame: children's geometry, lightweight construction
 Controls: scaled brake levers and grips for smaller hands
 Pedals: sized for children's feet
 Use: paved and light off-road surfaces
How to use
Before each ride adjust the saddle height so the rider can place the balls of their feet on the ground while seated and confirm handlebar and brake lever positions offer comfortable reach. Check tire pressure and brakes for proper function. Start riding on a flat, traffic-free surface to practice balance, pedaling and braking. Progress to longer rides and light trails as skill and confidence improve, ensuring that the child wears an appropriate helmet and protective gear at all times.
Usage recommendations
Regularly inspect the bicycle for loose bolts, wear on tires and brake pads, and ensure moving parts are lubricated. Use reflectors or lights for low-light conditions and select routes that match the child’s skill level. Replace worn grips or pedals with appropriately sized components to maintain safe control.

## FAQ

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Martes products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Martes service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/11450850/66088076_large.webp