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Article 301.06 · 2026 edition

Juniors Boys

A closed class: the rulebook names the boards it admits, and every one of them is a JetSurf. Anything the rulebook does not list is prohibited, and the list of what a rider may change runs to 6 items.

Who may enter Juniors Boys: age, gender and licence

Age
8 to 14 years, counted "within the relevant calendar year" as Art. 301.06 puts it. The band after it is Stock Men, from age 15.
Gender
The rulebook's own phrase is "male biological gender".
Same weekend
Art. 301 allows one class per racing weekend, plus Electric Challenge, which is the one exception.
Licence
An International licence from the rider's National Authority is compulsory across the championship. Applying for one, through a club, is covered on the how to start MotoSurf racing page.
Age bands beside Juniors Boys Outlined bars on one age line that starts at 8. Men and boys, Juniors Boys from 8 up to 14; Stock Men from 15, with no upper age; Elite Men from 16, with no upper age; Masters Men from 40, with no upper age. Any rider, Electric Challenge from 16, with no upper age. A bar with no upper age is left open at its right end and ends in an arrowhead. The Juniors Boys bar carries a second outline. 81640 age Men and boysAny rider Juniors Boys, 8 to 14, this classStock Men, 15 and over *Elite Men, 16 and over *Masters Men, 40 and overElectric Challenge, 16 and over

* Stock Men: does not take the previous season's Stock Men champion, who moves up to Elite Men unless the MotoSurf Committee decides otherwise (Art. 301.03), nor, unless the Motosurf Committee grants an exception, an Elite Men rider under 40 who finished in last season's top 8 or has raced two or more Elite Men rounds this season (Art. 301.01).

* Elite Men: takes a rider only after a completed Stock Men race in the season before, unless the Motosurf Committee grants an exception, and keeps for the rest of the season a rider who has raced two or more of its rounds (Art. 301.01).

Where bars in one group overlap, a rider of that age fits more than one band. Every band counts the age reached during the calendar year, and under Art. 301.09 the Motosurf Committee may still move a rider to another class.

How we know: Each bar is a class record's age band and rider, from the 2026 MotoSurf Rulebook, Art. 301.01 to 301.08.

Which boards the rulebook names for Juniors Boys

  • JetSurf Race DFI 2021
  • JetSurf Race DFI 2022
  • JetSurf Race DFI 2023
  • JetSurf Race DFI 2024
  • JetSurf Race DFI SL 2025

Which of those boards are on the boards page

Of the 5 entries above, these match a model on the boards page, which names models without years:

  • JetSurf Race DFI SL, type JR-H1, leaving the factory on FCS II Performer Black Medium - Side fin (R06Z083) and FCS II Connect GF 7" - Center fin (R06Z082).

Technical limits, Article 504

This article covers Juniors Boys and Juniors Girls.

Power
Art. 504 states no displacement. It names the eligible model years and defers to the manufacturer's Appendix 3.
Board length
200 cm maximum
Board width
No width limit stated.
Mass
30 kg maximum, without a fuel tank
Main fin
230 mm maximum height, 340 mm maximum length

Art. 504.02 b) holds the engine to the UIM homologation form printed as an appendix; its figures and tolerances are on the JetSurf engine homologation page.

Everything a rider may change (6)

This is the complete list, and the permission model is closed: anything the rulebook does not allow is prohibited.

  • Pads and straps
  • Throttle controller length
  • Shut-off key protector installation on the throttle controller
  • Main fin and side fins
  • Graphic design
  • Ball mounting in the exhaust can be removed

Limits and requirements, with no list

Art. 501 and 505: each article states limits a board must stay inside and requirements it must meet.

  • A change that keeps every limit and requirement

    goes through

    • Meets the article

  • A change past a limit, or breaking a requirement

    stops

    • Does not meet the article

A closed list of changes

Art. 502, 503 and 504: each article lists 6 or 7 changes a rider may make, and carries the clause at Art. 502.02 a), 503.02 a) and 504.02 a).

  • A change the list or another section allows

    goes through

    • Allowed

  • A change no section of the rulebook allows

    stops

    • Prohibited

Juniors Boys has a closed list of changes. Its clause at Art. 504.02 a) refuses what no section of the rulebook allows, so a section outside the list above can still allow a change. Art. 504 also caps the board's length and mass, so the board is measured as well.

How we know: The 2026 MotoSurf Rulebook, read article by article: Art. 502.01 a), 503.01 d) and 504.01 d) hold each list class's board to its standard specification and point it to its list of allowed modifications, the clause sits under each list article's engine requirements, Art. 501 and 505 hold the limits and requirements, and each article's heading names the classes it covers.

Other requirements in this article

  • None of the participants in the Juniors Categories can race on the JetSurf Titanium DFI.
  • The permission model is closed here too. Features not allowed by sections of the rulebook are prohibited, and Art. 504.07 is the list of what is allowed.
  • Art. 504.02 contains no sealing clause: it requires standard configuration and points at the manufacturer's specification, where Art. 502.02 c) and 503.02 c) seal the engine in as many words.
  • The rulebook still inspects a seal it never requires. Art. 504.06 c) lists an engine sealings compliance check among the functional checks for these classes, with no article anywhere mandating that the engine be sealed in the first place. Both are printed here and neither is resolved.

Fin rules for Juniors Boys

The allowed side fins for the Juniors categories are all the FCS fins compatible with provided adjustors. No other fins will be accepted. Only officially certified FCS fins are allowed.

Art. 504.05 d)

The Juniors rules leave the same question open as the women's. Art. 504.05 d) admits FCS side fins "compatible with provided adjustors", yet fin adjusters are missing from the permitted changes at Art. 504.07, so the rulebook never says whether a junior may fit different ones.

What the rulebook publishes on fin geometry is on the MotoSurf fin rules page.

Safety gear for Juniors Boys in the safety articles (5)

  • Helmet, CE homologated Art. 507.02 a)
  • Life jacket Art. 507.01 c) and 507.02 c)
  • Neck brace Art. 507.01 d) and 507.02 d)
  • Leash Art. 507.01 e) and 507.02 e)
  • Shin protectors Art. 507.02 f)

What each item must meet, and the kit required elsewhere, such as the environmental mat, is on the MotoSurf racing gear page.

Race format: laps in Juniors Boys

Under Art. 307, Juniors Boys heats run 5 laps, 2 long, and the final, printed as F1, runs 6 laps, 2 long. The lap chart prints one line for Juniors Boys / Juniors Girls, so Juniors Girls rides the same laps. Race Direction may change the long laps if riders are told at the briefing or by bulletin, so these are a starting point, not a schedule.

The course, the starts and how points are scored are on the MotoSurf race format page.

Title holders named in the rulebooks

Every season's champions, under the promoter's own class names, are on the MotoSurf champions page.

What changed since the 2025 edition

Split into its own article. The 2025 edition contradicted itself on the Juniors age band, saying 8 to 14 in one place and 8 to 15 in another. 2026 puts the boys at 8 to 14.

Read from 2026 MotoSurf Rulebook. Nothing on this page is a substitute for the published document at scrutineering.

Corrected on this page: 10 September 2026: earlier versions of the Juniors pages wrongly carried Art. 501's displacement ceilings. 10 September 2026: these pages used to call the Juniors engine sealed and to list no permitted changes, which told a junior rider they could change less than the rules allow.

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