What age can you race Rotax Junior Max?

The Motorsport UK Karting Yearbook gives the age range as 12-16. From the calendar year of the 13th birthday, or from the 12th birthday with a Kart National licence.

What is the minimum weight for Rotax Junior Max?

145 kg for kart and driver, with a minimum driver weight of 40 kg, according to the Motorsport UK Karting Yearbook.

What tyres does Rotax Junior Max use?

Mojo D2XX 'CIK' for dry conditions and Mojo W5 'CIK' for wet conditions.

Classes / Junior

Rotax Junior Max

Junior version of the Rotax 125 Senior MAX engine.

The essentials

Ages: 12-16From the calendar year of the 13th birthday, or from the 12th birthday with a Kart National licence.
Minimum weight: 145 kgDriver at least 40 kg
Number plates: Red/White
Dry tyres: Mojo D2XX 'CIK'Set from £209.04 inc VAT
Wet tyres: Mojo W5 'CIK'Set from £219.48 inc VAT
Class owner: JAG (UK)

From the Motorsport UK Karting Yearbook 2026, Version 1.1, page 45. Check the current regulations with the class owner before you buy.

Next steps

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Championships for Rotax Junior Max

Next rounds

Thu 8–Sat 10 Oct 2026BKC, Rotax Rounds 5&6; KZ2 Round 5Kart Silverstone
Sat 17–Sun 18 Oct 2026UKC, Rotax National TrophyKart Silverstone
Sat 7–Sun 8 Nov 2026TKC, Autumn CupWarden Law Kart Circuit
Sat 5–Sun 6 Dec 2026Winter Series, Round 1Rowrah Kart Circuit
Mon 28–Tue 29 Dec 2026Winter Series, Round 2 - Teesside O PlateTeesside Autodrome
Sat 16–Sun 17 Jan 2027TKC, Winter CupWhilton Mill Kart Circuit
Sat 30–Sun 31 Jan 2027Winter Series, Round 3Whilton Mill Kart Circuit

Where it's raced

Clay Pigeon Kart Circuit, Dunkeswell Kart Circuit, Fulbeck Kart Circuit, Glan y Gors Kart Circuit, Kart Silverstone, Kimbolton Kart Circuit, Larkhall Kart Circuit, PF International Kart Circuit, Rowrah Kart Circuit, Shenington Kart Circuit, Teesside Autodrome, Three Sisters Circuit, Warden Law Kart Circuit, Whilton Mill Kart Circuit

Questions

What age can you race Rotax Junior Max?: The Motorsport UK Karting Yearbook gives the age range as 12-16. From the calendar year of the 13th birthday, or from the 12th birthday with a Kart National licence.
What is the minimum weight for Rotax Junior Max?: 145 kg for kart and driver, with a minimum driver weight of 40 kg, according to the Motorsport UK Karting Yearbook.
What tyres does Rotax Junior Max use?: Mojo D2XX 'CIK' for dry conditions and Mojo W5 'CIK' for wet conditions.

Other Junior classes: IAME X30 Junior, Tillotson T4 Junior. All classes.