FprEN 14021
(Main)Stone shields for off-road motorcycling suited to protect riders against stones and debris - Requirements and test methods
- Abstract
This document specifies requirements and test methods for stone shields for use by youths and adults of either sex, over clothing and not directly on the skin, to provide limited protection against lofted stones and debris while riding motorcycles in motocross and other off-road activities on dirt roads.
Hence this document contains general and performance requirements for the materials utilized and requirements for sizes, shapes, marking and assembly methodology.
This document does not apply to stone shields for children and for people with chest girth below 50 cm.
- Status
- Not Published
- Publication Date
- 10-Feb-2027
- Technical Committee
- CEN/TC 162 - Protective clothing including hand and arm protection and lifejackets
- Drafting Committee
- CEN/TC 162/WG 9 - Motorcycle rider protective clothing
- Current Stage
- 4599 - Dispatch of FV draft to CMC - Finalization for Vote
- Start Date
- 27-Aug-2026
- Completion Date
- 27-Aug-2026
FprEN 14021 is a draft European Standard from CEN for stone shields used in off-road motorcycling. FprEN 14021 specifies requirements and test methods for garments worn over clothing, not directly on the skin, to give limited protection against lofted stones and debris for youths and adults riding motocross and other off-road activities on dirt roads.
What does FprEN 14021 specify?
FprEN 14021 covers the design, construction, sizing, marking, and testing of stone shields for riders. It applies to youths and adults of either sex, and it is not intended for children or for people with chest girth below 50 cm.
The document is organized into scope, normative references, terms and definitions, requirements, test equipment, test methods, marking, and manufacturer information. Annex ZA links the standard to Regulation (EU) 2016/425.
| Annex | What it covers |
|---|---|
| ZA | Relationship between this European Standard and the essential requirements of Regulation (EU) 2016/425 |
What are the key requirements of FprEN 14021?
FprEN 14021 focuses on fit, coverage, attachment strength, ergonomic wearability, and impact performance. In practice, a stone shield has to stay in place, cover the intended body areas, and resist the impact conditions defined by the standard.
Construction and fit
Clause 4.1 requires tightening or restraining devices or closures so the stone shield can be worn close to the body while still allowing freedom of movement. This matters because a protector that shifts or rides up during use will not protect the intended area.
Protected areas and sizing
Clause 4.2 defines the minimum protected areas for the breast guard, and for shoulder guards, biceps guards, and the back guard when those parts are present. Clause 4.3 ties size marking to chest girth measured on an upright, normally breathing person, with proportions defined by Table 1. For the buyer or quality manager, this means size selection is based on the wearer’s chest girth and the intended coverage, not just on general garment size labels.
Surface continuity and attachments
Clause 4.4 requires the components to be made so that gaps do not admit the circular probe used in testing. Clause 4.5 requires rigid attachments, straps, fasteners, and adjusters to withstand a 120 N pull without failure. In practice, the shield must not create openings that can catch or admit the test probe, and its fastening system has to survive normal handling and use.
Ergonomics
Clause 4.6 requires the stone shield to minimize discomfort and not unduly restrict arm movement. It also requires rounded shell edges and padding on each shell, with special attention to padding at edges. This matters because the protector has to be wearable for riding, not just strong in a lab test.
Impact performance
Clause 4.7 sets the impact test outcome: the average peak force below the anvil must be below 27 kN, and no shell may crack or shatter. This is the core performance check for the product’s protective function.
Marking and user information
Clauses 7 and 8 require permanent marking and instructions for fitting, use, maintenance, inspection, repair, and disposal. That information helps users choose the correct size, adjust the shield properly, and understand the limits of protection.
What terms does FprEN 14021 define?
- Stone shield - A product worn under or over outer clothing, but not directly on the skin, to protect against lofted stones and debris.
- Breast guard - The main front protective part of the stone shield, covering the anterior rib cage including the sternum.
- Shoulder guards - Optional parts that cover the top portion of the shoulders.
- Biceps guards - Optional parts that cover the outer portion of the upper arms.
- Back guard - The rear protective part that covers the scapulae and part of the spine.
- Chest girth - The reference body measurement used for size marking and size selection.
Who uses FprEN 14021?
FprEN 14021 is used by manufacturers of off-road motorcycling protective clothing, test laboratories, certification and compliance teams, and buyers specifying rider protection. It is also useful for design engineers and quality managers who need a clear basis for sizing, marking, impact testing, and user instructions.
What changed in FprEN 14021 from the previous edition?
FprEN 14021 will supersede EN 14021:2003. Compared with EN 14021:2003, the scope reduces the chest girth threshold from 75 cm to 50 cm, and Annex ZA has been updated to align with the essential health and safety requirements in Annex II to Regulation (EU) 2016/425.
Which standards are used with FprEN 14021?
FprEN 14021 refers to these standards in its normative references:
- EN ISO 13688:2013 - Provides general requirements for protective clothing, including the size-marking approach used for chest girth.
- ISO 6487:2015 - Provides measurement techniques in impact tests, including the instrumentation performance used in the impact test setup.
The bibliography also names EN 1621-1 as a related standard, and the note in Clause 5 says the test equipment could be common to standards such as EN 1621-1.
What does the FprEN 14021 document contain?
FprEN 14021 includes one sizing table, five figures, and detailed test apparatus descriptions. The figures show the stone shield layout, the body dimensions used for sizing, the padding arrangement, the anvil, and the circular probe used in the surface continuity check.
It also contains step-by-step methods for visual examination, measurement, restraint testing, ergonomic assessment, and impact testing. The impact method specifies conditioning before testing, test-point selection, and how the force results are recorded and judged.
Annex ZA provides a clause-by-clause relationship to Regulation (EU) 2016/425, which is useful for conformity assessment and technical file preparation.
Relations
- Effective Date
- 03-Aug-2022
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Frequently Asked Questions
FprEN 14021 is a draft published by the European Committee for Standardization (CEN). Its full title is "Stone shields for off-road motorcycling suited to protect riders against stones and debris - Requirements and test methods". This standard covers: This document specifies requirements and test methods for stone shields for use by youths and adults of either sex, over clothing and not directly on the skin, to provide limited protection against lofted stones and debris while riding motorcycles in motocross and other off-road activities on dirt roads. Hence this document contains general and performance requirements for the materials utilized and requirements for sizes, shapes, marking and assembly methodology. This document does not apply to stone shields for children and for people with chest girth below 50 cm.
This document specifies requirements and test methods for stone shields for use by youths and adults of either sex, over clothing and not directly on the skin, to provide limited protection against lofted stones and debris while riding motorcycles in motocross and other off-road activities on dirt roads. Hence this document contains general and performance requirements for the materials utilized and requirements for sizes, shapes, marking and assembly methodology. This document does not apply to stone shields for children and for people with chest girth below 50 cm.
FprEN 14021 is classified under the following ICS (International Classification for Standards) categories: 13.340.10 - Protective clothing. The ICS classification helps identify the subject area and facilitates finding related standards.
FprEN 14021 has the following relationships with other standards: It is inter standard links to EN 14021:2003. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
FprEN 14021 is associated with the following European legislation: EU Directives/Regulations: 2016/425, 93/68/EEC, 93/95/EEC, 96/58/EC; Standardization Mandates: M/571, M/571 AMD 1. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
FprEN 14021 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2025
Obojestranski ščitnik trupa motociklistov pred kamnito podlago in drobci,
primeren za vožnjo po brezpotju - Zahteve in preskusne metode
Stone shields for off-road motorcycling suited to protect riders against stones and debris
- Requirements and test methods
Protektoren gegen Aufprall von Steinen und Gesteinstrümmern für den Schutz von
Gelände-Motorradfahrern - Anforderungen und Prüfverfahren
Pare-pierres pour le motocyclisme tout-terrain destinés à protéger les motocyclistes
contre les pierres et autres menus projectiles - Exigences et méthodes d'essai
Ta slovenski standard je istoveten z: prEN 14021
ICS:
13.340.10 Varovalna obleka Protective clothing
43.140 Motorna kolesa in mopedi Motorcycles and mopeds
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
EUROPEAN STANDARD
prEN 14021
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2025
ICS 13.340.10 Will supersede EN 14021:2003
English Version
Stone shields for off-road motorcycling suited to protect
riders against stones and debris - Requirements and test
methods
Pare-pierres pour le motocyclisme tout-terrain Protektoren gegen Aufprall von Steinen und
destinés à protéger les motocyclistes contre les pierres Gesteinstrümmern für den Schutz von Gelände-
et autres menus projectiles - Exigences et méthodes Motorradfahrern - Anforderungen und Prüfverfahren
d'essai
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 162.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 14021:2025 E
worldwide for CEN national Members.
prEN 14021:2025 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Requirements . 5
4.1 Construction . 5
4.2 Minimum protected areas . 5
4.2.1 General. 5
4.2.2 Breast guard . 5
4.2.3 Shoulder guards . 6
4.2.4 Biceps guards . 6
4.2.5 Back Guard . 6
4.3 Sizing . 6
4.4 Surface continuity . 6
4.5 Attachments . 6
4.6 Ergonomic requirements . 6
4.7 Impact performance requirements . 7
5 Test equipment . 7
5.1 Apparatus . 7
5.1.1 Dropping apparatus . 7
5.1.2 Hemispherical impactor . 7
5.1.3 Anvil . 7
5.1.4 Force measurement instrumentation . 7
5.1.5 Tolerance and uncertainty . 7
5.2 Circular probe for surface continuity test . 8
6 Test methods . 8
6.1 Samples for technical examination and ergonomic testing . 8
6.2 Visual check and measurement . 8
6.3 Testing the surface continuity of stone shields . 8
6.4 Testing restraints of stone shields . 8
6.5 Ergonomic assessment of stone shields . 8
6.6 Impact testing of stone shields. 9
7 Marking . 9
8 Information supplied by the manufacturer . 9
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Regulation (EU) 2016/425 aimed to be covered . 14
Bibliography . 17
prEN 14021:2025 (E)
European foreword
This document (prEN 14021:2025) has been prepared by Technical Committee CEN/TC 162 “Protective
clothing including hand and arm protection and lifejackets”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
This document has been prepared under a standardization request addressed to CEN by the European
Commission. The Standing Committee of the EFTA States subsequently approves these requests for its
Member States.
For relationship with EU Legislation, see informative Annex ZA, which is an integral part of this document.
This document will supersede EN 14021:2003.
The main changes compared with EN 14021:2003 are as follows:
— in the scope the value of the chest girth has been reduce from 75 cm to 50 cm;
— Annex ZA has been updated in accordance with the essential health and safety requirements set out
in Annex II to Regulation (EU) 2016/425.
prEN 14021:2025 (E)
Introduction
Stone Shields conforming to this document are articulate garments intended for the protection of chest,
optionally of shoulders, back and biceps specifically against lofted stones and debris such as those riders
often encounter in off-road motorcycling and in allied sports activities where these hazards can exist.
A complete stone shield provides protection to the whole of the torso.
The essential part of a stone shield is the breast guard, which can be associated with the shoulder guards,
the back guard and the biceps guards.
When the stone shields are in the form of articulate assemblies the parts can be held together by
diversified joining devices and can be made out of mixed soft/hard or hard materials (shells). In the latter
case they are fitted with suitable padding on the inner surface, and their edges are rounded to avoid
bruising of the skin.
prEN 14021:2025 (E)
1 Scope
This document specifies requirements and test methods for the stone shields to be worn by youths and
adults of either sex to provide limited protection against lofted stones and debris while riding
motorcycles in motocross and other off-road activities on dirt roads.
Hence this document contains general and performance requirements for the materials utilized and
requirements for sizes, shapes, marking and assembly methodology.
This document is not applicable to stone shield for children and for people with chest girth below 50 cm.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN ISO 13688:2013, Protective clothing — General requirements (ISO 13688:2013)
ISO 6487:2015, Road vehicles — Measurement techniques in impact tests — Instrumentation
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1
stone shield
product designed to be worn under or over outer clothing (but not without underclothing and not directly
on the skin) and to provide protection from lofted stones and debris
Note to entry: The product consists mainly of a breast guard, which may be associated with or include shoulder
guards and other guards such as biceps guards and a back guard (see Figure 1).
4 Requirements
4.1 Construction
The stone shield shall be fitted with tightening or restraining devices or closures to allow them to be
donned tight to the body assuring freedom of movements. Check according to 6.5.
4.2 Minimum protected areas
4.2.1 General
The minimum protected areas of the breast guard is specified in Table 1 and in 4.2.2.
4.2.3 to 4.2.5 are applicable when other parts are present.
4.2.2 Breast guard
The breast guard shall cover the anterior portion of the rib cage including the sternum.
prEN 14021:2025 (E)
4.2.3 Shoulder guards
The shoulder guards shall cover the top portion of the shoulders.
4.2.4 Biceps guards
Biceps guards shall cover the outer portion of the upper arms.
4.2.5 Back Guard
The back guard shall cover the scapulae and a portion of the spine with a length corresponding of at least
C of Figure 2.
4.3 Sizing
Stone shields shall be marked on the breast guard with their size according to EN ISO 13688:2013 except
that the reference dimension is only the chest girth measured on a person in the upright position and
breathing normally with the tape-measure passed over the scapulae under the armpits and across the
chest and back.
For required minimum dimensions of a breast guard suited for a person with a chest girth of 105 cm, use
Table 1.
Other sizes will be scaled to the same proportions.
Table 1 — Dimensions
Dimensions A B C
Chest girth (%) 33 19 22
Example of chest girth 35 cm 22 cm 23 cm
of 105 cm
The dimensions A, B and C are defined below by reference to Figure 2 and do not include the padding.
A – the minimum distance between the lower edge of the breast guard and the mid point of the
subject's shoulder.
B – the minimum breadth of the breast guard at any point.
C – the minimum length between the mid point on the upper edge and the mid point on the lower edge
of the breast guard.
4.4 Surface continuity
The components of the stone shields shall be constructed so that there are no gaps that admit a circular
probe as described in 5.2.
4.5 Attachments
All rigid attachments and straps as well as fasteners and adjusters shall be able to withstand a pulling
force of 120 N without failure, when tested according to
...