Company Info

Contact Us

Sales Terms

Privacy Policy

Kitty Cat


Chassis Parts

Clutch Parts

Drive Train

Engine Parts

Fuel System


Hoods & Seats


Technical Services

    & Engine Work




Service Manuals


Polaris 120

Engine Parts


Clutches & Parts


Arctic Cat 120

Ski & Spindle Assy

A-arm Assy

Front Suspension

Steering & Tie Rod

Drive Train & Brake

Slides, Idlers, Track

Rear Suspension

Chassis & Bumper

Hood & Windshield

Belly Pan & Exhaust

Gas Tank & Seat

Engine Parts

Air Cleaner


Cylinder & Case

Piston & Crank

Recoil Starter

Throttle Control



*Clutches & Parts

*Parts Diagrams


Classified Ads

  Information and submit


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 GEN8 valve spring is the best valve spring available today and 100% ISR legal for both Ice Oval and SnoX racing.

  • The GEN8 valve spring is the best valve spring available today and 100% ISR legal for both Ice Oval and SnoX racing. These are engineered to barely lose any performance after the first couple heat cycles where they lose about .012" in free length. After that they hardly change at all and many customers use the same valve springs for half to a full season. With the use of rev limiters it's now even more important to have good valve springs so you can get out front quickly because once the rev limiters kick in everyone is running the same speed theoritically.

** NEW ** High Performance Gen8 Valve Spring (pr)         $9.00       P-3086563-G8

ISR Legal Polairs Valve Spring   

** NEW ** XL High Performance Gen8 Valve Spring (pr)         $9.00       P-3086563-G8XL

Extra Long (XL) Polaris Valve Spring - These are the same as the above legal spring except these are ground to be slightly longer than the above spring. Since the springs lose about .012" free length in the first couple heat cycles, this allows a person to run them a couple times to get them through the initial heat cycles and then sand/grind the ends until they pass the max ISR spec. Then you have a spring that's at it's best and the longetivity keeps your performance at it's peek for many weekends of racing.   

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

Piston, Standard (Retail $107.79)                                                      $29.95       P-3086969

Piston, .010" or .25mm (Retail $102.49)                                            $44.95       P-3086570


Piston Kit, .010" or .25mm (Retail $122.79)                                       $79.95       P-3086970K

Kit Includes: Piston, Rings, Piston Pin, & Circlips

Piston, .020" or .50mm (Retail $108.99)                                             $36.95       P-3086971

Polaris Ring Set, Standard (Retail = $87.99)                                              $29.50       P-3088203

Polaris Ring Set, .010" (Retail = $71.79)                               31.95       P-3088204

Polaris Ring Set, .020" (Retail = $69.99)                                                     $31.95       P-3088205

Polaris Piston Pin (Retail = $23.79)                                                          $6.00       P-3086546

Polaris Circlip (ea.) (Retail = $4.29)                                                          $0.45       P-3086553

Complete Polaris Gasket Kit (Retail $37.95)                              $27.95        P-0001001

Side Cover Gasket (Retail $17.27)                                            $6.95         P-0001002

Heavy Duty Rocker Arm (Retail $16.49)                                   $12.99        P-3087013

Rocker Cover Gasket (head gasket) (Retail $22.79)                       $6.00       P-3089528

Rocker (Valve) Cover Gasket (Retail $14.49)                                                 $6.00       P-3089529

Push Rod (Retail $26.79)                                                 $6.25       P-3086568

Exhause Valve (Retail $51.99)                                                 $19.95       P-3086566

Intake Valve (Retail $28.79)                                                 $12.95       P-3086565

Valve Guide (Retail $28.79)                                                $16.95       P-3086535

Valve Guide Plate (Retail $11.29)                                                $1.00       P-3086535

Collet Valve (Retail $6.29)                                                $1.10       P-3086567

NGK Rubber Plug Cap (Retail $7.89)                                                $5.95       TB05EMA

NGK OEM Plug Cap (Retail $7.99)                                                $5.99       3003-175

Pol Woodruff Key (Retail $13.49)                                                $1.95       P-3086536

Pol Exhaust Gasket (Retail $2.95)                                                $1.75       P-3086574

Pol Oil Seal, Flywheel (Retail $33.99)                                                $10.50       P-3086510

Pol Oil Seal, Side Cover (Retail $28.99)                                                $9.50       P-3086516

Pol Head Gasket (Retail $22.79)                                                $6.00       P-3089528

Pol valve cover gasket (Retail $14.49)                                                $6.00       P-3089529

Pol Side Cover Gasket (Retail $17.27)                                                $6.50       P-0001002

Pol Crank Bearing, Flywheel (Retail $19.95)                                         $18.85       P-3086947

Pol Crank Bearing, Side Cover (Retail $19.95)                                         $18.85       P-3080108

Pol Pivot Bolt Nut (Retail $2.95)                                         $1.97       P-3084912

Pol Head Flange Bolt (Retail $4.29)                                         $3.49       P-3086526

Pol Connecting Rod Assy (Retail $95.88)                                         $59.25       P-3086544

Pol Connecting Rod Pivot Bolt (Retail $4.65)                                    $4.50       P-3086545

Pol Camshaft Assy (Retail $90.19)                                         $89.27       P-3086554

Pol Tappet (Retail $31.16)                                         $17.43       P-3086562

Pol Governor Rod (Retail $7.79)                                         $6.95       P-3086596

Pol Governor Return Spring (Retail $11.83)                                         $11.19       P-3086599

Pol Air Jet Adjuster (Retail $11.83)                                         $9.95       P-3086658

Pol Main Carb Nozzle (Retail $20.36)                                         $19.95       P-3086669

Pol Carb Jet Holder (Retail $23.96)                                         $17.36       P-3086675

Pol Carb Air Jet Spring (Retail $5.74)                                         $4.90       P-3086672

Pol Carb Rod Spring (Retail $8.68)                                         $7.29       P-3087145

Pol OEM Valve Spring Retainer (Retail $6.80)                          $3.50       P-3088206


Adjustable Main Jets and Pilot Jets

  • The adjustable main jet replaces the bolt that holds the bowl onto the carburetor and allows you to adjust the fuel flow. By changing the fuel flow you can fine adjust the engines peak peroformance as tempature and oxygen levels change throughout the day of racing.

  • We offer two different adjustable main jets for the Polaris 120s, both non-cable and cabled versions.

  • NON-CABLED: The non-cabled version is simply just the adjustable main jet that installs into the bottom of the carburetor.

  • CABLED: The cabled version has a cable that connects to the jet and can be routed to the top of the engine compartment so it's easier to reach and adjust. However, the cables that's used has memory and doesn't always stay exactly where you set it so caution to watch for this is advised.

  • PILOT JETS: We offer several sizes of pilot jets sold individually, and now offer a pilot jet kit. The pilot jet kit comes with #55, #57.5, #60, #62.5 and #65 for just $30.

Pol Adjustable Main Jet WITHOUT Cable                                       $39.00     A09-0071

Pol Adjustable Main Jet WITH Cable                                               $57.95     A09-0072

Pilot Jets                                   $7.50         

Pilot Jet Kit (55, 57.5, 60, 62.5 * 65)                                             $30.00     A09-0150

Click Picture to Enlarge   


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 and also fits the Arctic Cat and Yamaha with the Yamaha engine (2010 and newer).
  • TIP #1: Keep a fresh battery in the limiter. As the battery power lowers so does the maximum rpm the limiter will allow.
  • TIP #2: Do not buy from someone at the track. Most folks know that each rev limiter allows a different maximum rpm and you don't want to buy one that's been testing and found to have a lower rpm. When we receive these we immediately seal the bag for your security.
  • TIP #3: If you have a rev limiter and the switch fails, use an adjustable main jet to set 6850 max rpm. Do this buy adjusting rich and then lean the engine until the rpm reaches 6850 on your tach. It's not legal to keep it like this but it will get you through a weekend.

Polaris Rev-Limiter (All Model Years)




9v Battery Box for Rev Limiter

  • The battery box on the rev limiters are notorious for breaking or failing, so don't let yourself be caught ready to race and having to withdraw because you don't have a working rev limiter. These are cheap so be sure to have a couple in your toolbox for emergencies.

9v Battery Box

MSRP is $3.49




TINY TACH Mini Tachs are back!!

  • Tachometer / Hour-meter for the ultimate in information tracking on gas engines.

  • RPM to 19,990 with 1/2 second update time.

  • High RPM recall.

  • 4 Timers: Total engine hours (not resettable) | Job timer (resettable). | Service reminder #1 set in hours from 5-50 (icon flashes). | Service reminder #2 set in hours from 10-250 (icon flashes).

  • Single button menu controlled.

  • Estimated battery life is 5+ years.

  • Can be surface mounted or flush panel mounted.

  • Easy to read thick digits.

  • Measures 3" W x 1-9/16" H x 11/16" D

Commercial Tiny Tach                                           $65.00                 A18-0135   

Click Picture to Enlarge   


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"
  • NOTE: Supplies are limited from manufacturer so we may upgrade orders to the Tiny Tach.

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)                                            $2.90     NGK-BPR6ES

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

Click Picture to Enlarge   

Send mail to the WEBMASTER with questions or comments about this web site.
Copyright 2004-2011 Olson Brothers Dist, Inc.