ROTAX 125 Senior MAX EVO Engine
€2,442.00
The Rotax 125 Senior MAX EVO is the most popular single-speed kart engine in the world: a liquid-cooled 125cc two-stroke delivering 30 hp at 11,500 rpm and 21 Nm of torque, with on-board electric starter and dry centrifugal clutch. It powers the Senior class of the Rotax MAX Challenge, the largest one-make series in world karting.
A reliable engine that is the same for everyone: on track the driver wins, not the budget. Perfect for RMC racers and for anyone who wants to go fast with an engine that never lets you down.
The Engine Kit includes everything you need to start: engine, carburettor, intake silencer, fuel pump, complete exhaust system, radiator, battery, battery box with cover, wiring harness, OFF/ON/START switch and relay.
Classes and age: RMC Senior MAX and Senior MAX Masters. From 14 years old (age limits may vary according to national regulations). For leisure, club racing and national or international events.
Official document (PDF):
Read the guide (in Italian): Rotax MAX EVO: classes, power outputs and how to choose the right engine
Quantity
Official Rotax technical data
The electronically controlled exhaust valve manages power delivery across the whole rev range: full power at the top end, drivability out of the corners. The carburettor is the Dell'Orto VHSB 34 XS.
- Maximum power: 22 kW / 30 hp at 11,500 rpm
- Maximum torque: 21 Nm at 9,000 rpm
- Weight: bare engine 12.0 kg, with complete power pack 23.1 kg
- Features: cylinder with electronically controlled exhaust valve
- Chassis compatibility: 1,040 mm wheelbase
- Rotax power pack: intake silencer, carburettor, fuel pump, engine, exhaust, radiator, battery box with cover, wiring harness, OFF/ON/START switch, relay
- Homologation: CIK-FIA approved engine
- Power values according to ISO 15550 and ISO 4106
FAQ
What is the difference between the Rotax Senior MAX EVO and the Junior MAX EVO?
The Senior has a cylinder with electronically controlled exhaust valve and delivers 30 hp at 11,500 rpm; the Junior has a cylinder without exhaust valve and delivers 23 hp at 8,500 rpm.
What is the difference between the Senior MAX EVO and the DD2 MAX EVO?
The Senior is single-speed (30 hp); the DD2 has 34 hp, chainless direct drive and a 2-speed gearbox with paddle shifters.
From what age can the Senior MAX EVO be used?
From 14 years old, unless national regulations set different age limits.
Shipping & returns
Shipping
The engine is shipped by express courier. Shipping is free in Italy and costs €49.90 to European Union countries. For any information: info@tksracelab.com, +39 352 0280 133 (WhatsApp).
Returns
- You have 14 days from receipt to withdraw from the purchase, without giving any reason.
- The product must be returned unused (not fitted or installed), in its original intact packaging and complete with all accessories and documents.
- Return shipping costs are paid by the customer. Refunds are made with the same payment method used for the purchase.
- If the product arrives faulty or damaged, write to info@tksracelab.com within 48 hours of receipt with photos: in this case the return is at our expense.
Full details on the Return Policy page.
