Link to his channel: http://www.youtube.com/user/vipe84 Lastly is our MCB Drop-In kit: This kit was designed for those who prefer to simply upgrade the piston quality and leave the OEM geometry as-is. The Ski Doo 800HO and 800R engines have a 132mm rod and 75.7mm stroke yielding a rod-ratio of 1.74. Box 1513, Woodstock, Ontario N4S 0A7 Order and Technical Assistance Phone : … Thread starter Danzick; Start date Dec 15, 2010; Forums. LOOKING fine and MEASURING fine are 2 VERY different things! you can also send in your stock haed and he will cut it for his domes. Used Polaris Snowmobile 600 Pistons RK Tek Replaces 2204900 for 2014 and others - with wrist pin bearings. Polaris Patriot 850 Dual Ring Direct Replacement Pistons. Doug Gardner. 1) The 600 Polaris Engine is a great engine!.. RK Tek spent a better part of the 2008 Season developing a performance package for the new Rotax 800R(ETEC is the SAME ENGINE) Engine. 2) The 2008-2009 CFI-4 engines had a VERY thin lower cylinder skirt that was prone to cracking especially once the OEM piston gets lose in the bore. Running our piston vs. this piston WILL show some performance enhancements. Condition is "Used". Ok, so I was reading the rk tek article from there web site about the series 111 motors and wanted some feedback on that. We design the piston that should have been installed from the factory. Sold as a set of 2. These pistons have about 1500 miles on them. Now busy week for us here at the shop building these sleds 落 stay tuned We are the ONLY company that has a kit to aid in lower piston skirt support. When you hear that all these aftermarket kits have a tighter tolerance than the OEM.. it is simply NOT true! It pleases me to see all the interest and hope Kels has another batch of pistons made up so i can have one ready when the time comes. 1) The RK Tek Direct Replacement Pistons are VERY different from the Wossner 800 Pistons.. yes, they are made by Wossner but they are VERY different in design. Dec 15, 2010 #1 my dad has a 02 800 the NON HO version. In other words,  IF your cylinder is fatigued, it will STILL be fatigued once a better piston is installed. We feel this piston to be mildly superior to the previous piston but also feel it is a lesser quality piston than what we offer. D. Danzick Free Member. 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. He said an honest 10 hp and have nothing but positive feedback on it. These pistons, as all my other CUSTOM pistons, follow this same design procedure, Polaris Patriot 850 Dual Ring Direct Replacement Pistons, Polaris Piston Myths vs. facts and "Fix Kits", COMMON Mis-Conceptions about the Polaris CFI Pistons, Engine and ,so called, "FIX KITS". Ski-Doo - RK Tek 827 High Elevation Domes. RK Tek sets itself apart from other performance shops by testing its products in the best lab in the world - the great outdoors. Two actually as i have the head and test pistons on my both 2017 and 2011 bikes. We NEVER use "call waiting" to  "click" over to another call. However, the piston design is not much better than the 800 Piston. Anyone have any experience with them? Machined from one solid piece of metal, these pistons are stronger and lighter, thus giving a longer lifespan and better performance overall. The MTNTK fix kit addresses piston failure that is common with some Polaris engines. Kelsey Tek Kelsey Manning. There are some massive gains to be had by drastically altering the piston design. RK Tek Inc is your premier 2 Stroke Performance Shop.. ALL we do is 2 Stroke Engines! Wiseco is a USA manufacturer for performance products such as forged pistons, clutch baskets, gasket kits, connecting rods, valves, crankshafts, and camshafts for motorcycles, dirtbikes, ATV, snowmobiles, PWC and automobiles. Yes, that's right, RK Tek draws results from "real world" testing. RK Tek is located in Preston, Idaho and is owned and operated by Kelsey and Rex (hence RK). Our CUSTOM pistons (Direct replacement, Drop In, AND Big Bore) are CUSTOM designed! With the Polaris CFI Engine (ALL 2 Injector Models), the lower half of the engine is dry.. meaning there is little to no fuel entering there. Supposedly the PCV with the auto tuner only takes one trip to get it set up and then it is spot on because of the Auto Tuner. The MAPE crank was discontinued in 2013 and newer engines in favor of a new manufactured crank by FUJI. Performance Motorsports Canada 948 Keyes Drive, P.0. 1) The 2008-2012 Pro 800 CFI Engines use a crank manufactured by MAPE. THIS is a great modification to perform and will help with crank failure. They have very a proprietary design that is unique to ALL of our pistons. RK Tek sets itself apart from other performance shops by testing its products in the best lab in the world - the great outdoors. RK TEK has a new piston and Cylinder head kit that is designed to help your 800 CFi in 2 ways 1) Improve power 2) Improve reliability of the engine. the rktek pistons are custom cut from sea doo pro x pistons and must have his cylinder head to work. Our CUSTOM pistons (Direct replacement, Drop In, AND Big Bore) are CUSTOM designed! FUEL (NOT COOLANT) is the #1 cooling agent for ANY Engine (important to remember) and this engine has none! Kawasaki Ninja ZX-14R. These changes add up to unquestionably the strongest, most powerful and durable piston the Polaris 800 owner can buy. You MUST MEASURE the piston in order to determine if the piston is "GOOD". RK TEK ECM custom re-curve add $140 CND Make payment to us here in Canada on drop in kit and ECM recurve then you mail your ECM directly to RK TEK with a note/letter including your NAME and PHONE # telling RK TEK that your ECM is for a 2KOOL PERFORMANCE / Sled-Werx Racing order. This is 100% false!! Installing ANY clever named piston kit will NOT fix your thin walled cylinder skirts! 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. Look what's in Dirt Bike magazine this month. This Price Already Includes a Refundable Core Deposit of $100. Please speak loud and clear when leaving a message. The new engine was torn completely down and inspected for deficiencies. The TRUTH of the matter is that MOST of these "Fix Kits" are nothing more than an Arctic Cat 800 Piston under a different name. This Block is being sold with 2 Matched RK Tek FIX PISTONS. 4 personnes étaient ici. If you have any questionscall us anytime we're here to help. RK Tek is located in Preston, Idaho and is owned and operated by Kelsey and Rex (hence RK). This is the first start up after complete too end rebuild including new plated and machined cylinder and Rk tek drop in piston kit. This is not a bad change but does very little to aid with the skirt collapse, extreme piston weight, and heavy ring drag. The drop in kit consists of a custom 2 ring piston that is designed to have tighter cylinder clearance which will help to minimize piston "rocking" or "slap" in the cylinder. These pistons, we offer, are FAR from ANY "off the shelf" OR "aftermarket" piston available today! 1245 Industrial Park Rd.Preston, IDAHO 83263PHONE: 208-852-3221Email: torqueline@2strokeheads.com. KTM and Husqvarna. Hopefully, this article will clear up some of the mis-conceptions that surround this engine and its internal design? It is a widely held belief that the OEM Polaris pistons are too small from the factory and this is where the issues lie with the OEM. RK Tek is located in Preston, Idaho and is owned and operated by Kelsey and Rex (hence RK). NOTE: We return every phone call if a clear message is left. ALL my pistons are designed from a blank sheet of paper and made with custom components (No, they are not 100% Wossner). 7) Another held belief is that the new AXYS piston has addressed the OEM short-comings mentioned above. I'm not sure as I'm a newbie. The Rod-Ratio is the ratio of the rod length to the stroke of the engine. They are 100% unique to RK TEK! This allows your 2011-2012 engines to run with the better 2013 cylinder. If it uses a 1/4" shim under it, then this is most likely the case. Friend of mine having fun with a Polaris RMK 800 PRO 2013 mod with RK TEK and SLP Stage2 kit. In other words.. your piston can LOOK perfect but MEASURE out of spec. FEED SYSTEMS MANUFACTURER AND SUPPLIER All products manufactured to PED and ASME standards FEED SYSTEMS MANUFACTURER AND SUPPLIER All products manufactured to PED and ASME standards Applications SR-TEK containers setup Applications Why SR-TEK What our brand stands for Why SR-TEK References Some of our projects References PRESSURE TANKS Stainless steel swing … This allows for a lot of rocking in the bore (not good). We, usually, end up altering MANY of the OEM piston's design aspects and "correct" the short-comings we feel are present. RK Tek also builds one of a kind custom CNC machined parts for any application. This thicker skirted cylinder WILL install into your 2011-2012 cases ONLY if you modify the upper case half to accept the thicker skirt. It is a sports bike from Kawasaki, which is one of the fastest bikes in its segment. AUTOMOTIVE DIVISION POWERSPORTS DIVISION. The Arctic Cat 800 has the approx 130mm Rod and the same stroke. What we need is someone who has an RK Tek head already on their bike, to install the new concept piston. The longer the rod, the higher the ratio, given the same stroke. Both of these kits offer SIGNIFICANT performance enhancement and extend engine life! PLEASE, be patient if you get the voicemail and leave a message. They claim that the cure for ring flaking and poor performance under long loads for the series 111 motor would be to replace the OEM piston and rings and head with there dual ring pistons and there hemi head. More clearly, the rod ratio is too small for this engine. its got 1900 miles on it with around 100 psi of compression so we are going to replace the pistons. Wishing you all a very Merry Christmas, from our family to yours! Came off a 06 skidoo 800 rev. Our custom pistons HOLD their tolerances..  AGAIN.. Page 1 of 3 - RK TEK head.....10 hp gain - posted in REV Chassis - Performance and Trail Models: I have been checking into more mods and I think Im going to get a RK TEK head. 6) ANY running of the thinner walled cylinders (2008-2012) can lead to stress and fatigue on the cylinder skirts. I picked up a set of these on Friday. This MAPE crank has a high failure rate of the lower rod bearing and the outer bearings. 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. Polaris thickened up the skirt, again, for 2011-12 CFI-2 Engines. Installing ANY piston kit (including ours) AFTER running the OEM pistons will NOT remove any stress or fatigue that MAY have already occurred in your cylinder. Fantastic service, and a pleasure to talk with Kelsey on the phone to place my order. This FUJI crank is a superior crank to the MAPE in every way. One would hope that any of these other pistons would also contain this same OEM offset. They are designed with hard anodizing on the ring lands, pin boss and crown underside AND custom coating on the crown. Clever named kits do not address the MAPE Crank Issues! Based on these FACTS, I think it is safe to assume that the rod-ratio is not an issue and claiming that is nothing more than a scare tactic. Max Trains et Hobby. September 17, 2019. well worth it if your looking for some more performance. Re: RK TEK head and new concept piston 2017 300 xcw test. People always state "I pulled my OEM pistons and they LOOKED fine and compression reading was still in spec!". The REAL issue is that the OEM piston does not REMAIN in spec after use. These are very clever marketing terms to impose the "idea" that by installing these kits that the engine is "fixed" and will no longer be prone to failure. One dome has some marks in it from a piston going bad. Please visit our website at www.2strokeheads.com We have spent the time and developed a Piston Kit and a Drop In Piston/Head kit for the 600 Twin.. 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. Arrived at my house on Tuesday morning. Visual inspection will tell you NOTHING about the size of your piston. The RK Tek Line of Customs Pistons are VERY Unique... ALL pistons are designed from a blank sheet of paper and uses only the highest quality of components. Links : Use the side menu to navigate through our site. Doing a compression check will not yield any relevant information regarding the health of your PISTON SKIRTS. And it has to be on a bike where the stock piston isn't totally clapped out as that could give a false sense of performance gain. This is a great modification and can be done by any competent machine shop. Christmas came early for a few of our customers! 4) There is a common belief that the 2013 and newer engines have a cylinder or crankshaft offset compared to the earlier years. Installing a better designed piston that will remain in tolerance (spec) will greatly aid in helping your thinner walled (2008-2012) cylinders survive. Remember this, VERY IMPORTANT, a compression check will tell you little to nothing about the health of your skirts. We will open again on … admincheat giveweaponset 0 100 admincheat giveweaponset 1 100 admincheat giveweaponset 2 … Ski-Doo: ZX Sleds. Snowmobiles: Brands, Performance & Modifications. It has EXCESSIVE skirt taper.. They are also lighter than the OEM Piston and that will help with the acceleration from a stop. If you have any questionscall us anytime we're here to help. The Polaris rod is approx 132mm in length and the stroke is 70mm yielding a rod-ratio of approx 1.88. 2 were here. 3854 Boul Henri-Bourassa est Montreal Quebec, H1H 1K5, CANADA Open in Googlemaps Fermé jusqu'au 11 janvier 2021. Heat is one of the primary causes of skirt collapse and skirt collapse is ONE of the primary issues with the OEM design.. They have very a proprietary design that is unique to ALL of our pistons. If you're on a budget and want to try some slightly used Pistons go with RK Tek. So, it stands to reason that IF the rod-ratio of the Polaris 800 CFI engine is too small, then the rod-ratio of the Arctic Cat and Ski Doo 800 engines are also too small (especially the Ski Doo since it is even smaller). When you are talking to us, you have our full attention and will not be cut short. Installation of ANY of our pistons will allow ANY Polaris CFI engine to reach a higher potential. Used in there Billet cylinder head. Installng a RKTek Drop in Piston and Head Kit on a 2012 Polaris Pro RMK 800cc. Cart empty × Cart empty ... Polaris Patriot 850 Dual Ring Direct Replacement Pistons; Motorcycle Performance. These pistons, we offer, are FAR from ANY "off the shelf" OR "aftermarket" piston available today! THESE pistons address many issues associated with the OEM design (Balance, weight, ring location to name a few).. "FIX KITS" Or other "Clever" marketed named Kits. It suffers from skirt collapse and it is also WAY too HEAVY! Convincing you to believe that their piston has an offset where others do not is simply misleading. Ski-Doo. The piston kits we offer (some call a fix kit.. we do not) are the highest quality piston on the market today.. The OEM Polaris piston is 100% in spec and the proper size when new in the box! RK TEK says they run the Boondocker control box but my mechanic is convinced the Power Commander V and Auto tuner is the way to go. As Eastern Canada's newest exclusive dealer for RK TEK , Kelsey see's our dedication to the sport of high performance sledding here at SLED-WERX Racing and shares our passion in providing our clients the very best and the most accurate information on products possible! RK Tech. Some will also have you believe that they have installed a "special" pin offset. Does any one have an opinion on this? 3) For 2013-Present, Polaris thickened up the cylinder intake skirt, once again, to help alleviate all the cylinder skirt failures. Therefore, the rod ratio on the Arctic Cat 800 engine is WORSE than that of the Polaris 800 engine. The truth is that the OEM piston's tolerances are in spec, they just don't stay there. Some aftermarket pistons, such as the ones used by MTNTK Performance and RK Tek, are made of forged metal. Sorry guys... this is the reality! Dec 11, 2008 596 50 28 Livingston MT . _____________________________________________________. Pistons * Rings * Wrist Pins Rods * Gaskets * Sleeves HOME AUTOMOTIVE POWERSPORTS Company Info Dealer Application Catalog Request Overstock Piston Sale! RK Tek SKI-DOO 800R/ETEC Drop In Piston Kit ETEC Kit is ONLY $570 PTEK Kit is $845. As you provide your questions below, we'll relay them to Kelsey and staff. RK Tek sets itself apart from other performance shops by testing its products in the best lab in the world - the great outdoors. This FUJI crank WILL install without any modification into any 2008-2017 engine case. Skirt collapse happens usually WITHOUT any scoring or visual appearances on the piston. RK tek pistons? Talked with them a few times and the gains are real good. Everyone I know that has the RK Tek head here really likes the performance gains; that's been raved about by many here including myself. The truth is that the Factory OEM Piston has a .020" offset to help relieve thrust pressure near Bottom Dead Center (BDC). If you are ordering cheater heads, we will need to have your OEM heads to make the modifications. In 2010 Polaris thickened up this skirt. We address this with our REV 2 Drop In Kit. The other major issue is the LACK of lower  piston support at BDC. The phone is busy all day long servicing our clients. 5) It is also believed that there exists a Rod-Ratio issue with the Polaris 800CFI engines. We will be closed for the holiday weekend, enjoying some much needed family time. admincheat givearmorset tek 100 admincheat givearmorset flak 100 Ascendant Weapon Sets. This stress is amplified by a looser piston and the potential for full cylinder skirt failure increases when a piston is out of tolerance . Closed up to Jan 11. You can have a BROKEN off lower skirt and the compression reading will not change! ALL of the 2008-2012 800 Engines were prone to lower cylinder skirt cracking! RK Tek 2 Stroke Performance. The new AXYS piston is basically, the SAME piston with some added oil retention grooves on the exhaust upper skirt. But is useable. If you are ordering cheater heads, we will need to have your OEM heads to make the modifications. Modification into any 2008-2017 engine case this month we will open again on … Max Trains et Hobby Direct,! A higher potential nothing but positive feedback on it with around 100 psi of compression so are... Nothing but positive feedback on it with around 100 psi of compression so we are going to replace the.. The Polaris 800 owner can buy both 2017 and 2011 bikes any us! Ratio on the Ring lands, pin boss and crown underside and CUSTOM coating the. And fatigue on the Arctic Cat 800 engine compared to the stroke of primary!, these pistons are CUSTOM designed are FAR from any `` off the shelf '' OR `` ''! The # 1 my dad has a 02 800 the NON HO version::... 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Words, if your cylinder is fatigued, it will still be fatigued a... Replacement pistons ; Motorcycle performance fatigue on the cylinder intake skirt, again, for 2011-12 CFI-2 engines Already their. Dec 11, 2008 596 50 28 Livingston MT a crank manufactured by MAPE by competent. Menu to navigate through our site heads, we 'll relay them to Kelsey and staff higher.... We have spent the time and developed a piston going bad builds one of primary! The strongest, most powerful and durable piston the Polaris 800 engine very! Lack of lower piston skirt support addressed the OEM piston does not REMAIN in spec, they just n't... High Elevation domes of our pistons causes of skirt collapse and it is also too! Good rk tek pistons canada the compression reading will not change the MAPE crank has a High failure of! Measure the piston that should have been installed from the factory HOME AUTOMOTIVE POWERSPORTS Company Info application! 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