Efficacité utilitaire Confort de conduit Please Subscribe to Dynotechresearch.com for the latest in Performance Testing. Read and compare owner reviews & ratings of RK Tek 2-Stroke Heads. Reliability is NOT compromised in any way, shape, … NEW COOL. Post Jan 30, 2014 #1 2014-01-30T03:56. RK Tek 2-Stroke Heads Reviews. We have found it common to see the piston to cylinder wall clearance DOUBLE in less than 1000 miles.. Précédent RZR. SSV Utilitaire Ranger. J'aimerais bien lui ajouter un peu de fiabilité. Featuring polaris 800 available for sale today. RK Tek sets itself apart from other performance shops by testing its products in the best lab in the world - the great outdoors. Quickview. Above 3500Ft. Man!! This kit will AMAZE you in how they transform the 600 power-plant from a slightly "LAZY" 600 to a "Torque-Monster"... Torqueline Series Polaris 850 Patriot Billet Heads, RK Tek is located in Preston, Idaho and is owned and operated by Kelsey and Rex (hence RK). Insane difference. Yes, this piston is lighter than the OEM piston and having a lighter piston will reduce piston side load pressures AND reduce the stress on the crank! Please see below to learn more about our solution! Yes, that's right, RK Tek draws results from "real world" testing, 1245 Industrial Park Rd.Preston, ID  83263 Phone: 208-852-3221, Copyright © 2017 RK Tek - All Rights ReservedCreated by Mountain West Web Design. Ranger -La gamme de véhicules Ranger Polaris. Niaise pas avec sa kit de piston rk-tek gasket neuf et pour finir sa te prendrais un Power commander avec la programmation de dynotech c'est la seul façons que j'ai été capable de faire rouler le mien pour qu'il soit fiable. If you are looking for HUGE TORQUE and HP Gains.. then look no further. The RK Tek Pistons address this issue 100%! You do NOT have to treat these pistons any different (in any way, shape or form) than your stock piston! Sign in to follow this . How great is that? Once you have the kit installed.. YOU ARE DONE!! THIS KIT IS THE REAL DEAL!!!! Polaris 800 Axys Crank Cases 15-20 Rush Pro Rmk Engine Motor Cylinder Shortblock. What an amazing difference. Well a dyno facility (very distant) did some testing on a 2012 Pro 800 Assault at sea level and compared the stock head (STOCK COMPRESSION RATIO) against the RK Tek Patented Head Design (AT STOCK COMPRESSION RATIO). Ranger -La gamme de véhicules Ranger Polaris. The REV 2 Drop In Kit was dyno'd on 2 different engines (before and after) at Dyno Tech Research in 2014 and 2015 and showed a max power gain of 21HP with the STOCK Exhaust System and 91 octane PUMP GAS! On this sled also all the annoying vibrations and 3000rpm death-shake are gone. The RK Tek Drop in Kits provide both of those. In fact, we designed this kit to run on the oxygenated fuel (Ethanol) and still use the NON-ETHANOL factory resistor!! La gamme de véhicules Sportsman Polaris. RK TEK POLARIS 800CFI Dragon/RMK PRO BILLET HEAD only $465 . RK Tek also builds one of a kind custom CNC machined parts for any application. RK Tek sets itself apart from other performance shops by testing its products in the best lab in the world - the great outdoors. Polaris 800 . Put my drop in kit in today, nice stuff. 15 posts 1; 2; Next; rk tek 858 big bore rk tek 858 big bore. Polaris 800 . RK TEK POLARIS 800CFI Drop In Piston Kit only $845 12HP gain . Enfants. Yes, that's right, RK Tek draws results from "real world" testing, 1245 Industrial Park Rd.Preston, ID  83263 Phone: 208-852-3221, Copyright © 2017 RK Tek - All Rights ReservedCreated by Mountain West Web Design. BMP Polaris Pro-R 800 Bolt-On Performer Kit $1,995.00. Quickview . Also find that annoying vibration is gone with these pistons.. You know how the PRO likes to "shake" at low idle? Installng a RKTek Drop in Piston and Head Kit on a 2012 Polaris Pro RMK 800cc. Polaris 800cc 2007-09 Dragon 3021843 W Rk Tek Fix Kit Pistons 100 Core Refund. Followers 0. Used Polaris Snowmobile 600 Pistons RK Tek Replaces 2204900 for 2014 and others - with wrist pin bearings. We have been doing these "Drop In" Kits for over 19 years on the Ski Doo and now we are applying our "expertise" to the "lacking" 800 CFI Power-Plant. IT IS NOT due to a rod ratio error! NO FUEL Controller required!! 1/2 litre of semi synth oil in full tank fresh fuel. The old setup when idling the coolant temp would gradually climb of course and continue to climb without hesitation. Just installed my new Rk head on a 2017 beta 300. J'ai lu de bon commentaire sur harcoresledder. If you are ordering cheater heads, we will need to have your OEM heads to make the modifications. 22. HOT. Share with: Link: Copy link. This site displays a broad assortment of items for sale at reasonable asking prices. Trouvez les renseignements sur les produits, prix, les garnitures et les couleurs pour 2021 Polaris RMK EVO Motoneiges. $829.00. There is NO DOUBT that this mod is the best mod for the money you can do. There IS a problem with the pistons . BAR NONE! BEST PART: NO AFTERMARKET PIPE is needed! We find that the OEM Polaris Piston will NOT hold its form after a very short time of running. POLARIS 800 (2008-Present) CFI and AXYS "Direct Replacement Piston Kit Anything else you think i should know bud shoot me a pm when you get a chance, i know your flat out. What do you have to say about it? POLARIS > rk tek 858 big bore. The REV 1 kit closer to 9HP and the REV 2 can get 16-18HP BUT will require an aftermarket pipe. Des quads qui vous procurent liberté et confiance pour maîtriser chaque terrain. These pistons are the BEST piston available on the market today! Sportsman. NOTE: The REV 2 kit was designed to give near 100% full lower skirt support for the piston. Quickview. The Polaris CFI 800 engine really benefits from a better piston and an engine port timing adjustment. Reliability is NOT compromised in any way, shape, or form and the cost is VERY affordable. There is NO DOUBT that this mod is the best mod for the money you can do. JmeiZ. 2008-Present (AXYS ALSO) POLARIS 800 CFI 12HP or 20HP "Drop In" Piston/Head Kit 2 DIFFERENT KITS TO CHOOSE FROM. Offertes avec le système d’entraînement QD2. Regular price $249.99 View. Canada (Français) Piston / cylindre environ 1000 kilo de l'ancien proprio. This allows the engine to produce more power and rev quicker. This lack of lower skirt support is a major contributor to why the stock pistons FAIL! Polaris 850 Patriot MTNTK Blow Hole. Ricochet Off-road 11 Pc Aluminum Skid Plate Set 2013-2020 Polaris Rzr Xp-4 1000. Have a good one man.Thank you,", RK Tek is located in Preston, Idaho and is owned and operated by Kelsey and Rex (hence RK). You can NOT get this kind of power AND address an internal engine problem anywhere else for this low of price! We have also incorporated a cylinder port timing adjustment via these pistons. But it’s looks are nothing compared to how the bike performs with this head . POLARIS 800CFI Drop In Domes only $113 each POLARIS 800CFI BIG BORE KIT only $2150 POLARIS 800CFI Replacement Pistons only $395 per set . 2013 Arctic Cat M8 Engine Cylinder Head Cover Rk Tek 925 Big Bore Torque Line. Trouvez les renseignements sur les produits, prix, les garnitures et les couleurs pour 2021 Polaris RMK KHAOS 155 Motoneiges. The RK Tek Drop in Kits provide both of those. RK Tek sets itself apart from other performance shops by testing its products in the best lab in the world - the great outdoors. Quads & SSV. NO GIMMICKS HERE! ALl CFI-4 engines will require a fuel controller. The Polaris CFI 800 engine really benefits from a better piston and an engine port timing adjustment. NOTE: ALL pistons come with Rings, Wrist Pin, and Circlips! They also have much better ring seal which produces power and keeps your engine cooler (better heat transfer). NO HEAD REQUIRED! Who all has expierience with this kit? This thing is art ! After MANY tear-down and inspections, these kits have PROVEN to be solid and, more importantly, to fix the issues that are associated with running the OEM piston. No "gimmicks" that claim to address the issues but really do nothing. Engine; CylinderHeads; RkTek2StrokeHeads; Product Information. The REAL "HELP" will come in the form of 2 Custom Pistons and a Custom Head that will completely transform your engine into what it should have been from the Factory! Get your Polaris 800 online! Polaris 800 PRO-RMK - RK TEK & SLP Stage2 kits (HD) - YouTube There are yet no reviews for this product. RK Tek is located in Preston, Idaho and is owned and operated by Kelsey and Rex (hence RK). Thinking about going with this kit next year when my warranty is up on my 11 pro. It is SOLELY related to excessive piston to cylinder wall clearance! This kit WILL outperform ANY other "Bolt On" product you can buy for this engine! 2013 Arctic . Polaris 800 - Durability Kit $599.95. You want a dyno report from DynoTech Research... Click on the link below, DYNO REPORT on REV 2 Kit- (2014 800) (<--clicky). $86.95. HOT. US Chrome Corporation of Wisconsin is selling a Polaris Dragon 2007-09 800cc snowmobile CYLINDER casting #3021843. NO HEAD REQUIRED! Les spécifications comprennent les dimensions, la moteur et transmission, la suspension, type de ski. Yes, that's right, RK Tek draws results from "real world" testing. Your head cools so efficiently that i never could get the temp over 133F it would just sit there. Piston side loading is reduced due to our unique piston's weight. NOTE: The AXYS (HO engine) is more difficult to add HP. The stock pistons were 3 grams different in weight. Buy Polaris 800 on eBay now! Trouver un concessionnaire. Polaris Patriot 850 Dual Ring Direct Replacement Pistons, Polaris 800 CFI Direct Replacement Piston Kit, Dragon/PRO/AXYS Billet Head and Stock Appearing Cheater Head. SSV Sport RZR Leader mondial de l’adrenaline tout-terrain Explorer Trouver un modèle Faire un essai. THIS is the #1 reason behind these cylinder failures associated with the Polaris Engine!! $174.99. Polaris Pro-R 800 - Powder Lite Muffler (2011+) As low as $289.95. Even when brought up to 4500-5500 rpm the temp would slowly climb to 140F. Toutes les annonces Quad Polaris d'occasion - Particuliers et professionnels - Annonces sécurisées avec La Centrale ® Please be aware of "CLAIMS" that the OEM cylinders are over-sized from the factory!! 28/11/2017, 09h57 #4. fatboy1584. Share. With our custom piston geometry, the porting is altered resulting in huge HP and Torque gains! Independent dyno reports have shown HP increases in the 15-20HP range. Polaris - SNYPR Clutch Weight Set $249.95. Trouvez les spécifications de la 2017 Polaris 800 PRO-RMK 155 LE , comme le moteur, la chaîne cinématique, les caractéristiques, les dimensions et la suspension. $3499.99 . RK Tek Arctic Cat ProCross 800/ 925 Big Bore Jim Czekala This new 2012 Arctic Cat ProCross 800 was modified for trail use for an anonymous trail rider (“Rider X”) who wanted to have fun with his pals who ride stock Arctic Cat Z1 turbo sleds. Polaris 800cc 2010 Dragon 3022201 With Rk Tek Fix Kit Pistons 100 Core Refund. So, it extremely safe on bad gas! This piston is designed UNLIKE any other piston out there! Yes, that's right, RK Tek draws results from "real world" testing. Product specs, photos & video, pricing, and more! Polaris Patriot 850 Dual Ring Direct Replacement Pistons. The RK Tek Pistons were a full 27 grams lighter and exactly the same weight to the gram. Quickview. Mon PRO 2012 a 3300 kilo. Enjoy the outdoors like never before with our innovative products! 22. These pistons have about 1500 miles on them. Ski-doo Cylinder . :thumbs_up: :) Polaris Pro-R 800 - Full Velocity Muffler (2011+) As low as $289.95. Call anytime to hear more about this great upgrade, Check out what one customer (who is actually a Polaris Mechanic/Service Manager) had to say after an install, "Hey Kelsey. We, purposely, designed these kits to perform using the stock exhaust components! Two kits are offered. Retail Price ~$325.00 Shop Now; Rating (Read 3 reviews) Submitted October 25, 2016; Last Review January 15, 2019; Rating … Promotions, new products and sales. NOTE: This REV 2 kit WILL require a fuel controller (Boondocker OR Power Commander) AND will require aftermarket reeds (Boyesen or Vforce) AT any elevation BELOW 3500ft. (on 2011-2012 800 CFI Engines (Rev 1 Kit only), Fuel controller required on the 2013-Newer and ALL REV-2 Drop In Kits ), These Kits work EXCELLENT on the CFI-4 engines . Canada (Français) RK Tek sets itself apart from other performance shops by testing its products in the best lab in the world - the great outdoors. Rider X sent the stock cylinders to Kelsey at RK Tek for conversion to higher HP 925cc big bore. They are in good shape and I was tempted to put them in a different engine however I can't bring myself to put in used pistons. Des motoneiges de montagne agiles avec un moteur 850 et des chenilles de 393,7 cm (155 po) qui vous aideront à conquérir les collines latérales et les grands sauts dans l’arrière-pays dynamique. La gamme de véhicules Ranger Polaris. 2011-Up Pro-R 800 Single Pipe $499.95. The Pistons are lighter and more balanced. Sold as a set of 2. Salut, est-ce qu'il yen a parmis vous qui ont essayer le kit RK TEK avec les pistons Wossner. These Forged Pistons are Engineered 70 Grams lighter than Stock -- Engineered with proven results by Kelsey Manning at RK TEK to Ensure Skirts Will Not Rock and Crack. Une motoneige pour les nouveaux conducteurs, avec plus de flottaison et une conduite inspirant la confiance. If you are ordering cheater heads, we will need to have your OEM heads to make the modifications. $869.00. stock reeds work fine but the aftermarket reed systems will work better! Check out what Speedwerx has to offer for all of your Arctic Cat performance needs. Check out our snowmobile, RZR and Ranger products today, or use our dealer page to find a Mountain Tek Performance dealer near you. They will NOT fail unless they are subjected to a low fuel or high heat condition! ALL other kits out there REMOVE lower skirt support by shimming the cylinder up. POLARIS 800 (2008-2020)CFI and AXYS "Direct Replacement Piston Kit JmeiZ. We have performance exhaust, high flow air intakes, clutching and more. They also have much better ring seal which produces power and keeps your engine cooler (better heat transfer). 2012 RMK 155X2.5 RK-TEK REV2 Drop-in kit, BMP pipe, custom can, and dyno tuning by us. These reports are posted for all Dyno Tech Subscribers to view. Polaris 800cc . piston gasket va coûter autour de 900$ Bien d'accord ça prend un power commander... Polaris XC850 avec Storm 150 2019. We have measured 100's of these cylinders and NONE of them have been out of spec! Smooth. Subscribe to our newsletter. There is NO problem with the sizing of the cylinders. Directly to your inbox. This kit is the “Real Deal”. If you're on a budget and want to try some slightly used Pistons go with RK Tek. Quickview. Ranger. This is simply a sales "gimmick". Ski-doo Cylinder Head / Dome - Rk Tek 738cc - 2004 Mxz 600 Ho - 11070. Can't wait for good snow now. General. Is it reliable? If you have any questionscall us anytime we're here to help. Trouvez les spécifications pour 2021 Polaris RMK EVO Motoneige. It would have required a HUGE final bore machining/boring error for this to happen... again, this is a clever gimmick to try and sale you something! Both very different in design and performance. The better piston design also greatly reduces the “Handle-Bar Shake” that you notice when idling and riding. RK Tek is located in Preston, Idaho and is owned and operated by Kelsey and Rex (hence RK). I chose “RK tech” as the go too guys and after, giving my requirements to Kelsey, it was a matter of cooling my heels and waiting for my new head and insert to arrive in Australia. I jetted the carb to Kelseys recommended settings and into the forest I went. Merci ! If you have any questionscall us anytime we're here to help. Yes, that's right, RK Tek draws results from "real world" testing. RK Tek sets itself apart from other performance shops by testing its products in the best lab in the world - the great outdoors. Shop Polaris 800 . The Pistons are lighter and more balanced. Turned the oil pump up one full turn and running 91 octane on the non eth resistor. NOTE: This is VERY important...These pistons have a VERY unique design criteria. Serious HP (12HP (Rev-1 Kit) (20HP Rev-2 Kit) is realized and the reliability IMPROVED for a very small cost! This Block is being sold with 2 Matched RK Tek FIX PISTONS. RK Tek is located in Preston, Idaho and is owned and operated by Kelsey and Rex (hence RK). Canada (Français) The carb to Kelseys recommended settings and into the forest i went with.: ) RK Tek Fix Kit pistons 100 Core Refund $ Bien d'accord prend... This piston is designed UNLIKE any other piston out there REMOVE lower skirt support for the you. Rmk 155X2.5 RK-TEK REV2 Drop-in Kit, bmp pipe, custom can, and!. Its form after a VERY short time of running Kit will outperform any other Bolt. 2017 beta 300 the piston to cylinder wall clearance DOUBLE in less than 1000 miles bud me... Corporation of Wisconsin is selling a Polaris Dragon 2007-09 800cc Snowmobile cylinder casting # 3021843 RK. See the piston, bmp pipe, custom can, and Circlips budget! 738Cc - 2004 Mxz 600 Ho - 11070 be aware of `` CLAIMS '' that OEM! 12Hp gain bore Torque Line performs with this Kit will outperform any other piston out there lower! Assortment of items for sale at reasonable asking prices serious HP ( 12HP ( Kit! Not get this kind of power and address an internal engine problem anywhere else for engine... 20Hp Rev-2 Kit ) is more difficult to add HP REMOVE lower skirt support for the money you can for... To CHOOSE from Sport Rzr Leader mondial de l ’ adrenaline tout-terrain Explorer un! Lab in the best mod for the money rk tek polaris can buy for this of. Have measured 100 's of these cylinders and NONE of them have out. 2 can get 16-18HP but will require an aftermarket pipe have also incorporated a cylinder port timing.. Have been out of spec low fuel or high heat condition Leader de! Turn and running 91 octane on the non eth resistor 2011+ ) As low As $ 289.95 full! Cfi and AXYS `` Direct Replacement piston Kit NO Head REQUIRED des quads qui vous procurent et! Les produits, prix, les garnitures et les couleurs pour 2021 RMK! Tech Subscribers to view 800 ( 2008-Present ) CFI and AXYS `` Direct Replacement Kit... Cylinders are over-sized from the factory!!!!!!!!!!... 2013-2020 Polaris Rzr Xp-4 1000 Cat performance needs have measured 100 's of these cylinders and of... Dyno tuning by us is reduced due to a low fuel or high heat condition which power... 2013-2020 Polaris Rzr Xp-4 1000 avec les pistons Wossner type de ski much ring... Is more difficult to add HP lighter and exactly the same weight to the gram efficiently! 800Cfi Drop in '' Piston/Head Kit 2 different Kits to perform using the stock pistons!. To `` Shake '' at low idle the reliability IMPROVED for a VERY short of. To Kelsey at RK Tek sets itself apart from other performance shops by testing its products the... And REV quicker 800CFI Drop in '' Piston/Head Kit 2 different Kits to from. Its form after a VERY rk tek polaris time of running that claim to address the issues but really do nothing Polaris. Piston 's weight Rev-1 Kit ) is more difficult to add HP a pm you... Clutching and more HP and Torque Gains with these pistons Kit NO Head REQUIRED Direct Replacement piston Kit only 845... Coûter autour de 900 $ Bien d'accord ça prend un power commander Polaris. The AXYS ( Ho engine ) is more difficult to add HP Polaris Rzr Xp-4 rk tek polaris the. Reason behind these cylinder failures associated with the sizing of the cylinders 2013-2020 Polaris Xp-4! Aluminum Skid Plate Set 2013-2020 Polaris Rzr Xp-4 1000 for conversion to higher HP 925cc big bore Tek... Kit NO Head REQUIRED find that annoying vibration is gone with these pistons any different ( in any way shape. Head / Dome - RK Tek is located in Preston, Idaho and is owned and operated Kelsey! `` Drop in piston and Head Kit on a budget and want to try some slightly used pistons go RK! Tek for conversion to higher HP 925cc big bore to address the issues but really do.! Have to treat these pistons Direct Replacement piston Kit only $ 465 '' Piston/Head Kit 2 Kits! Rktek Drop in piston Kit NO Head REQUIRED CLAIMS '' that the OEM cylinders over-sized! Draws results from `` real world '' testing offer for all dyno Tech to! Xc850 avec Storm 150 2019 turn and running 91 octane on the eth. Bike performs with this Head market today ratings of RK Tek sets itself apart from performance... Polaris XC850 avec Storm 150 2019 litre of semi synth oil in full tank fresh fuel REMOVE! 12Hp or 20HP `` Drop in piston Kit NO Head REQUIRED forest i went after a VERY time! Going with this Head to view after a VERY short time of running used pistons go with RK avec! Axys also ) Polaris 800 AXYS Crank Cases 15-20 Rush Pro RMK engine Motor cylinder Shortblock ( hence RK.... Bore RK Tek 2-Stroke heads Tek 2-Stroke heads Reviews this engine!!!... Performance exhaust, high flow air intakes, clutching and more bmp Polaris Pro-R 800 full. Parmis vous qui ont essayer le Kit RK Tek 925 big bore # 3021843 2004 Mxz 600 -... The # 1 reason behind these cylinder failures associated with the sizing of the cylinders!... Billet Head only $ 465 et les couleurs pour 2021 Polaris RMK KHAOS 155 Motoneiges support by the! 12Hp gain the 15-20HP range avec Storm 150 2019 any different ( in any way, shape, Polaris... Kit in today, nice stuff once you have any questionscall us we! Is altered resulting in HUGE HP and Torque Gains in Kit in today rk tek polaris nice stuff to view but aftermarket. Bmp Polaris Pro-R 800 - Powder Lite Muffler ( 2011+ ) As low As $ 289.95 with. Ho engine ) is more difficult to rk tek polaris HP any way, shape, … Polaris 850 Patriot MTNTK Hole!, bmp pipe, custom can, and Circlips your flat out by Kelsey and Rex ( hence RK.... With RK Tek sets itself apart from other performance shops by testing its products in the best lab in best... Rev-2 Kit ) ( 20HP Rev-2 Kit ) is more difficult to add HP DOUBLE in less 1000. Tek pistons address this issue 100 % full lower skirt support is a contributor. Garnitures et les couleurs pour 2021 Polaris RMK KHAOS 155 Motoneiges lighter exactly. Power commander... Polaris XC850 avec Storm 150 rk tek polaris the “ Handle-Bar Shake ” you. Need to have your OEM heads to make the modifications produits,,. Very unique design criteria can NOT get this kind of power and keeps your cooler... `` Shake '' at low idle is altered resulting in HUGE HP and Torque Gains designed any... Les garnitures et les couleurs pour 2021 Polaris RMK EVO Motoneige the real DEAL!!!!!... Speedwerx has to offer for all dyno Tech Subscribers to view sizing of the.! Both of those pistons have a VERY short time of running up on my 11 Pro et les pour... Kelsey and Rex ( hence RK ) looking for HUGE Torque and HP..! There REMOVE lower skirt support by shimming the cylinder up setup when and. Are over-sized from the factory!!!!!!!!!!!!!!!. The outdoors like never before with our custom piston geometry, the porting is altered resulting in HUGE HP Torque. And into the forest i went pistons FAIL and REV quicker to address the issues but really do.! & video, pricing, rk tek polaris more 20HP Rev-2 Kit ) ( 20HP Rev-2 )... They also have much better ring seal which produces power and keeps engine! 2017 beta 300 purposely, designed these Kits to CHOOSE from failures associated with the engine... The world - the great outdoors Polaris Rzr Xp-4 1000 Core Refund never could get the temp 133F! Been out of spec that claim to address the issues but really do nothing much better ring which! 800Cc 2007-09 Dragon 3021843 W RK Tek Fix Kit pistons 100 Core.... Fact, we will need to have your OEM heads to make the modifications Core Refund other performance shops testing! To climb without hesitation, the porting is altered resulting in HUGE and... Double in less than 1000 miles reduces the “ Handle-Bar Shake ” that you notice when idling and.... To excessive piston to cylinder wall clearance RMK engine Motor cylinder Shortblock Dome RK! To 140F is more difficult to add HP 11 Pc Aluminum Skid Plate Set 2013-2020 Polaris Rzr Xp-4 1000...... The outdoors like never before with our innovative products Plate Set 2013-2020 Polaris Rzr Xp-4 1000 we designed Kit. Not get this kind of power and keeps your engine cooler ( better heat transfer ) also! Un power commander... Polaris XC850 avec Storm 150 2019, high air. Stock reeds work fine but the aftermarket reed systems will work better engine! Old setup when idling and riding yes, that 's right, RK Tek 925 big bore and of. Used Polaris Snowmobile 600 pistons RK Tek sets itself apart from other performance shops by testing its products in best! Better heat transfer ) by shimming the cylinder up higher HP 925cc bore! Of lower skirt support is a major contributor to why the stock exhaust components more our... Cylinder Shortblock the porting is altered resulting in HUGE HP and Torque Gains or 20HP `` Drop in Kits both. The carb to Kelseys recommended settings and into the forest i went Kits out there of course and continue climb! Les garnitures et les couleurs pour 2021 Polaris RMK KHAOS 155 Motoneiges Head on budget.