ROTAX KART ENGINES
125 Senior MAX EVO
Ages 14+
Masters division for drivers 32+
The Senior MAX is for drivers 14 and up, whether they're moving up from Junior MAX or starting karting for the first time as a teen or an adult. Drivers moving up from Junior don't need to start over: the Senior MAX shares the same core engine as Micro, Mini, and Junior MAX, so you can upgrade an existing engine rather than replace it, and a well-maintained, upgraded engine stays competitive. It races at every level, from leisure and club racing to national and international competition, and the same engine powers the Masters class for drivers 32 and up.
The CIK-FIA approved Senior MAX delivers 30 horsepower through a single-speed, non-gearbox setup with a centrifugal clutch and electric start, so drivers can focus on racecraft instead of shifting. Built for long engine life and straightforward maintenance, it keeps downtime and running costs down, and its record in senior and masters racing makes it a dependable choice for newcomers and experienced racers alike.
AGE
14+ Years**
RACE CLASS
leisure/club/national or international
MAX PERFORMANCE
22 kW / 30 hp at 11,500 rpm
MAX TORQUE
21 Nm at 9,000 rpm
WEIGHT
bare engine: 12.0 kg / 26.5 lbs with complete power pack: 23.1 kg / 51.0 lbs
SPECIAL FEATURES
cylinder with electronically controlled exhaust valve
POWER PACK
intake silencer, carburetor, fuel pump, engine, exhaust system, radiator, battery box incl. cover, cable harness, OFF/ON/START switch, relay
CHASSIS COMPATIBILITY
wheel base 1,040 mm
FUEL REQUIREMENT
Minimum 91 Octane
Pump Fuel
OIL REQUIREMENT
XPS Kart-Tec fully synthetic 2-stroke
2% mix (50:1), about 2.6 oz per gallon
**Age limits can vary according to national regulations
Why Rotax?
Everyone who gets into karting eventually asks the same two questions: what is this really going to cost, and will I be able to keep up? The Rotax MAX platform was built around those questions.
It starts with one engine. Micro, Mini, Junior, and Senior MAX share the same core, so as a driver grows from a first race to senior competition, the engine grows with them through upgrades rather than replacements. Keep it maintained and it stays competitive, which puts the difference where it belongs: with the driver.
The same thinking runs through the rest of the engine. It runs on pump gas, not specialty race fuel, and needs only a 2% oil mix. It arrives as a complete package with the cooling system and electronics included, and it's backed by a 6-month factory warranty. It's built to go a long time between rebuilds, which means more weekends at the track and fewer in the shop.
Every engine is sealed and built to the same technical rules around the world, so the playing field stays level. A driver learning at a local club track is racing the same engine, under the same rules, as drivers from around the world at the Rotax MAX Challenge Grand Finals. The road from a first club race to international competition is already paved.
More time racing, less spent keeping up, and a clear path ahead for any driver willing to put in the work. That's the idea behind Rotax.
