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Kitty Cats

Polaris 120

Arctic Cat 120

Ski Doo 120




Favorite Links:

>Kids Pro Ice West

    NW MN & E. ND



    Northeast MN


>WI Kitty Cat Racers



>WI Kids Snowmobile

    Racing Association

    Northern WI


>Michigan SnoX

    All MI


>Rock Maple Racing

    Northeast USA


Other Links:


    Message Board






Polaris Engine


Mychron Light Tach

Spark Plugs



Polaris 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.

  • The "blue tinted" valve spring has a slightly tighter coil which is not ISR legal, but accepted in most snoX venues.

  • The OEM valve spring is exactly that, and not many customers buy these when you can get the others for 1/4 the price.

** NEW ** High Performance Gen6 Valve Spring (pr)         $9.00       P-3086563-G6   

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

OEM Valve Spring (pair) (27mm ~)                                        $20.00       P-3086563

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


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.
  • This rev-limiter is for the Polaris 120. The Arctic Cat and Yamaha are different.

Polaris Rev-Limiter (All Model Years)




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



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) - Temp. Of Out Stock             $9.25     E3.31

Click Picture to Enlarge   

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