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Favorite Links:

>Kids Pro Ice West

    NW MN & E. ND

 

>KCPRO-East

    Northeast MN

 

>WI Kitty Cat Racers

    Wisconsin

 

>WI Kids Snowmobile

    Racing Association

    Northern WI

 

>Michigan SnoX

    All MI

 

>Rock Maple Racing

    Northeast USA

 

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>KittyCatSnowmobiles

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Arctic Cat 120cc Engine

 

NOTE:  The "Engine Parts" section needs to be updated with Arctic Cat parts and not Polaris parts. We'll have this correct very soon.

 

Arctic Cat 120 Engine Parts

 

  • There will be more engine parts listed as I have time to add them.  Thanks for your patience.

  • The GEN5 valve spring is the best valve spring available today and 100% ISR legal for both Ice Oval and SnoX racing.

** NEW ** High Performance Gen6 Valve Spring (pr)            $9.00       0694-036-G6   

SnoX Valve Spring (pair) (Blue tinted spring)                            $5.00       P-3086563-B   

Ice Oval Valve Spring (pair) (<38psi spring)                              $5.00       P-3086563-RL

OEM Valve Spring (pair) (27mm ~)                                           $5.00       P-3086563-RS

Polaris Ring Set, Standard (Retail = $56.00)                                $26.56       P-3088203

Polaris Ring Set, .010" (Retail = $59.93)                                      $25.72       P-3088204

Polaris Ring Set, .020" (Retail = $63.62)                                      $25.72       P-3088205

Complete Polaris Gasket Kit                                                       $27.86        P-0001001

Side Cover Gasket                                                                    $6.00         P-0001002

Rocker Arm                                                                              $9.98        P-3087013

Rocker Cover Gasket (head gasket)                                          $5.85       P-3089528

Rocker (Valve) Cover Gasket                                                    $5.95       P-3089529

 

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KOSO Rev Limiters (ISR LEGAL)

  • As of the 2014/15 season, rev-limiters are now required to be used on all stock 120 class races. These KOSO rev-limiters restrict the maximum RPM to 6850 and are the only ISR approved rev-limiter devices.
  • This rev-limiter uses a 9 volt battery for power so there is no power required from the snowmobile itself.
  • A very simple three wire hook up to install.
  • There is a rev-limiter for the 1999 to 2009 Arctic Cat 120 with the Suzuki engine and a different rev-limiter for the 2010 and later Arctic Cat and Yamaha 120 with the Yamaha engine.

Arctic Cat SUZUKI Rev-Limiter

1999 to 2009 Arctic Cat

$50.006

A02-0300

Arctic Cat YAMAHAi Rev-Limiter

2010 and later Arctic Cat & Yamaha 120cc snowmobiles

$50.008

A02-0400

 

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Yamaha Engine Performance Kit (ISR LEGAL)

  • This kit is an absolute must have to run in any stock class race in order to compete.
  • The Yamaha engines were made for longevity, not performance. Therefore, Arctic Cat created a kit that would allow the Yamaha engine to run equal to the Arctic Cat 120 with Suzuki engine and the Polaris 120 in stock classes.
  • The kit includes a high performance camshaft, valve springs, carburetor jetting, offset flywheel key, and gaskets.

Yamaha High Perfomance Kit

$249.00

A02-0401

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KOSO Mini RPM Tach (with recall)

  • This meter can be easily install on about any engines. Just wrap the RPM signal wire around your spark plug wire, set the number of cylinders… that’s it, you’re ready to go!

  • Memory recall of highest RPM since last reset!
  • Display range : 0~15,000 RPM
  • Display speed : <0.5 second
  • RPM input pulse : 0.5,1,1.5,2,2.5,3,4,5,6
  • Battery type : CR 2032
  • Battery life : 1000 Hours
  • Size : Width = 2.4" x Length = 1.3" x Height = 0.6"

KOSO Mini RPM Tach

$59.95

A02-0001

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Carburetor Jetting

  • 120s typically come with 47.5 or 50 pilot jet. The pilot jets control how much air is allowed into the carburetor to mix with the fuel, thus creating a fuel to air ratio. In order to allow more fuel into the engine, you need to increase the pilot jet size first. Then you'll be able to increase your main jet size (or if using an adjustable main jet you'll be able to increase fuel flow) to match the fuel to air ratio and thus get more fuel into the cylinder.

  • Olson Brothers Dist is working on a new adjustable main jet for 2016/17 season and will post more information in the fall. For right now, we only carry in stock adjustable main jets for the Arctic Cat Suzuki engine.
Pilot Jets                                $7.50             
Arctic Cat Static Main Jets         $9.25     

Click Picture to Enlarge   

Spark Plugs

  • Standard and Iridium NGK spark plugs for Kitty Cat and all 120cc sleds. Order on-line or call 651-485-3771.

  • Iridium plugs last longer and have more spark surface for better fuel ignition.

  • E3 plugs are designed for high performance engines and have a diamond shaped electrode for greater spark.

Standard 120cc Spark Plug (BPR6ES)                                            $2.50     NGK-BPR6ES

Iridium Race Spark Plug (BPR6EIX)                                               $9.25     NGK-BPR6EIX

E3 Race Spark Plug (Heat Range 6)                                               $9.25     E3.34

E3 Race Spark Plug (Heat Range 7)                                               $9.25     E3.31

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