Ease of use and cylinder parity
 Track tests in the U.S.A.
 360 of world’s top kart racers will ‘test’ the new set up

Gunskirchen, Austria, September 29, 2016 – To provide the latest technology in karting,
BRP-Rotax constantly verifies any input of the market to make its products even better.
Since the launch of the new engine series there have been implemented some
improvements to increase the ease of use of the technologically advanced Rotax kart
To get a first feedback beside the tests on the dyno and from BRP-Rotax’ own test driver, a
track test with independent test drivers was organized in the U.S.A. During the test in
September 2016 BRP-Rotax wanted to make sure to cover all technical innovations and to
get the feedback that confirms the intention to provide the customers the best product
possible with the latest technology in karting.
For the test drives, the company provided Rotax Junior MAX engines with the 2017 set up to
be compared with the actual 2016 engine configuration. The key aspects tested have been
the new engine control unit (ECU), the new battery housing with the multi-function switch,
the new cable harness, spark plug and cylinder.
The ECU with minimized vibration level due to its changed position – used for the Rotax 125
Junior MAX, the Rotax 125 MAX and also for Micro and Mini MAX engines – is less sensitive

on the main jet above 13,000 rpm with slightly altered ignition timing. With a richer main jet
the engine will perform well above 13,000 rpm. The new ECU is much more forgiving in the
set up of the carburetor.
Now the ECU is located on the left side of the battery housing. A multi-function switch is
attached to the optimized battery housing which provides an easier handling to the
The new cable harness with plug in connection for the multi-function switch is another
feature. The plug in connection for the electric starter incorporates the ground connection for
the overall electrical system. The connection for the battery charger is aligned with the cable
harness. The support plate system is more compact with electrical connections for the
ignition coil and magnet valve only. This results in less complexity and easier handling for
the end-user.
An improved manufacturing technology (single piece sand core, digital print) – including
Computer Numeric Control (CNC) machined exhaust and boost port – is used to produce the
cylinder for the Rotax 125 Junior MAX engine. This technology provides constant
performance of the cylinders to assure equal performance to all drivers. The cylinders with
the advanced manufacturing technology are also used for Rotax 125 Micro and Mini MAX
evo engines.
These optimized features will already be used at the Rotax MAX Challenge Grand Finals
2016 in Sarno, Italy. This venue will be perfect to prove the new set up implemented in the
Rotax 125 MAX evo engine series.
All the components have already been legalized in September 2016. It is up to the
respective distributor and his federation as of which date they declare these components
legal for their national RMC.
“We are convinced that with all the optimized technical features, the Rotax MAX engine
series with its ease of use, equal opportunities, durability and the lowest maintenance in the
field will endorse our customers to race the kart with the most advanced technology in the
market”, said Peter Oelsinger, Vice President Rotax Propulsion Systems and Finance at
The Rotax MAX Challenge (RMC) is a professional kart racing series established, owned
and organized by BRP and its Rotax kart engine distributors. Approved by and in compliance
with CIK / FIA, the RMC is a “one-make-engine” formula: only Rotax kart engines that are
checked and sealed (for equal performance) will be used. The success in the competition is
mainly up to the skills of the driver.
For more information about the Rotax MAX Challenge, please visit http://www.rotaxkart.
About BRP-Rotax
BRP-Rotax, the subsidiary of BRP Inc. in Gunskirchen, Austria is a leader in the development and
production of innovative 4- and 2-stroke high performance Rotax engines for BRP products such as
Ski-Doo and Lynx snowmobiles, Sea-Doo watercraft, Can-Am all-terrain, side-by-side vehicles and
Spyder roadsters as well for motorcycles, karts, ultra-light and light aircraft.
In the last 50 years, the company has developed more than 350 engine models for recreational
vehicles and produced over 7 million engines.
About BRP
BRP (TSX:DOO) is a global leader in the design, development, manufacturing, distribution and
marketing of powersports vehicles and propulsion systems. Its portfolio includes Ski-Doo and Lynx
snowmobiles, Sea-Doo watercraft, Can-Am all-terrain and side-by-side vehicles, Can-Am Spyder
roadsters, Evinrude and Rotax marine propulsion systems as well as Rotax engines for
karts, motorcycles and recreational aircraft. BRP supports its line of products with a dedicated parts,
accessories and clothing business. With annual sales of over CA$3.8 billion from over 100 countries,
the Company employs approximately 7,900 people worldwide.
Ski-Doo, Lynx, Sea-Doo, Evinrude, Rotax, Can-Am, Spyder and the BRP logo are trademarks of Bombardier
Recreational Products Inc. or its affiliates. All other trademarks are the property of their respective owners.
For information:
Alexandra Reisinger
Marketing & Communications
Rotax Kart Engines
Tel: +43.7246.601.698

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