ISO 4210-2-2023 PDF

Full title and description

Cycles — Safety requirements for bicycles — Part 2: Requirements for city and trekking, young adult, mountain and racing bicycles. This International Standard specifies safety and performance requirements for the design, assembly and testing of complete bicycles and major sub-assemblies for the identified categories, and gives guidance for manufacturer’s instructions on use and care.

Abstract

ISO 4210-2:2023 sets safety/performance requirements and associated tests for city and trekking bicycles, young adult bicycles (saddle height ≥ 635 mm and < 750 mm), mountain bicycles and racing bicycles (including some folding designs). It excludes specialized types such as tandems, recumbents, delivery bikes, BMX and bicycles intended for stunt or sanctioned competition use. The document complements the ISO 4210 series and refers to common test methods given in the companion parts of the series.

General information

• Status: Published.
• Publication date: 11 January 2023.
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 43.150 (Cycles).
• Edition / version: Edition 3 (2023).
• Number of pages: 33 (ISO edition page count).

Scope

Applies to young adult bicycles (maximum saddle height ≥ 635 mm and < 750 mm), city and trekking bicycles, mountain bicycles and racing bicycles with maximum saddle height ≥ 635 mm (including some folding bicycles). Specifies performance criteria and test requirements for frames, forks, steering components, brakes, wheels, saddles/seat‑posts and other major sub-assemblies, and sets requirements for markings and instructions. Excludes specialized bicycles such as delivery, tandem, recumbent, BMX and bicycles designed for stunt or sanctioned competition use; for bicycles with maximum saddle height between 435 mm and 635 mm see ISO 8098 and for ≤ 435 mm follow applicable toy/ride‑on regulations.

Key topics and requirements

• Mandatory minimum safety features and labelling (manufacturer instructions and markings for safe use and maintenance).
• Braking system requirements — at least two independently actuated braking systems (front and rear) and defined braking performance tests and acceptance criteria.
• Structural strength and fatigue tests for frames, forks, handlebar/stem assemblies, and seat‑posts to verify resistance to static and dynamic loads.
• Wheel, rim, tyre and tube performance limits and test procedures to ensure integrity under expected loads and impacts.
• Saddle and seat‑post attachment and strength requirements and test methods (with seat‑post tests further defined elsewhere in the series).
• Steering and handlebar stem safety including minimum failure torques, and requirements for angle‑adjustable stems where applicable.
• References to common and part‑specific test methods given in companion parts of the ISO 4210 series (for example ISO 4210‑3 for common test methods and other parts for braking, steering, frame/fork, wheel/rim, pedal/drive system and saddle/seat‑post tests).

Typical use and users

Used by bicycle manufacturers, component suppliers, test laboratories, conformity assessment bodies, product designers and safety engineers to design, validate and certify city, trekking, young adult, mountain and racing bicycles to internationally harmonized safety/performance requirements. Also referenced by national standards bodies and regulatory agencies when adopting or aligning national regulations with ISO technical content.

Related standards

ISO 4210 is a multipart series — key related parts include ISO 4210-1 (vocabulary/terminology), ISO 4210-3 (common test methods) and further parts covering braking, steering, frame/fork, wheel/rim, pedal/drive system and saddle/seat-post test methods. For bicycles with lower saddle heights (children’s bicycles) see ISO 8098. The ISO 4210 series was revised in 2023 and national/adopted versions (EN ISO, BS EN, DIN EN ISO, etc.) align with these updates.

Keywords

bicycle safety, cycles, braking, frame test, fork test, steering, wheels, rims, seat-post, saddle, ISO 4210, ISO 8098, test methods, performance requirements

FAQ

Q: What is this standard?

A: ISO 4210-2:2023 is Part 2 of the ISO 4210 series — an international standard that defines safety and performance requirements for city & trekking, young adult, mountain and racing bicycles (design, assembly and testing requirements).

Q: What does it cover?

A: It covers required performance criteria, structural and fatigue tests, braking performance, wheel and tyre requirements, component attachment safety (handlebars, stems, seat‑posts, saddles), labelling and manufacturer instructions for the bicycle categories named in the scope. It explicitly excludes certain specialized bicycle types and points to ISO 8098 for younger‑children bicycles.

Q: Who typically uses it?

A: Bicycle manufacturers, component suppliers, product designers, testing laboratories, certification bodies and standards/regulatory organizations use this standard to design, verify and demonstrate compliance of affected bicycle types.

Q: Is it current or superseded?

A: Current. ISO 4210-2:2023 is the third edition published in January 2023 and it replaces the earlier 2015 edition.

Q: Is it part of a series?

A: Yes — ISO 4210 is a multipart series covering bicycle safety. Parts include vocabulary (ISO 4210-1), Part 2 (this document), Part 3 (common test methods) and additional parts for braking, steering, frame/fork, wheel/rim, pedal/drive system and saddle/seat-post test methods. The series was revised in 2023.

Q: What are the key keywords?

A: Bicycle safety, ISO 4210, braking, frame and fork tests, steering, wheel and rim, saddle and seat‑post, test methods, city/trekking, young adult, mountain, racing, manufacturer instructions.