Visual inspection will tell you NOTHING about the size of your piston. Kawasaki Ninja ZX-14R. This stress is amplified by a looser piston and the potential for full cylinder skirt failure increases when a piston is out of tolerance . Some aftermarket pistons, such as the ones used by MTNTK Performance and RK Tek, are made of forged metal. 4) There is a common belief that the 2013 and newer engines have a cylinder or crankshaft offset compared to the earlier years. RK Tek is located in Preston, Idaho and is owned and operated by Kelsey and Rex (hence RK). 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). If you are ordering cheater heads, we will need to have your OEM heads to make the modifications. 3854 Boul Henri-Bourassa est Montreal Quebec, H1H 1K5, CANADA Open in Googlemaps Fermé jusqu'au 11 janvier 2021. We design the piston that should have been installed from the factory. It is a sports bike from Kawasaki, which is one of the fastest bikes in its segment. These pistons, we offer, are FAR from ANY "off the shelf" OR "aftermarket" piston available today! The MTNTK fix kit addresses piston failure that is common with some Polaris engines. These pistons, we offer, are FAR from ANY "off the shelf" OR "aftermarket" piston available today! PLEASE, be patient if you get the voicemail and leave a message. Some will also have you believe that they have installed a "special" pin offset. Ski-Doo - RK Tek 827 High Elevation Domes. 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 … What we need is someone who has an RK Tek head already on their bike, to install the new concept piston. Ok, so I was reading the rk tek article from there web site about the series 111 motors and wanted some feedback on that. 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. The truth is that the Factory OEM Piston has a .020" offset to help relieve thrust pressure near Bottom Dead Center (BDC). 4 personnes étaient ici. As you provide your questions below, we'll relay them to Kelsey and staff. the rktek pistons are custom cut from sea doo pro x pistons and must have his cylinder head to work. AUTOMOTIVE DIVISION POWERSPORTS DIVISION. 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. In 2010 Polaris thickened up this skirt. 1) The 2008-2012 Pro 800 CFI Engines use a crank manufactured by MAPE. Christmas came early for a few of our customers! The Arctic Cat 800 has the approx 130mm Rod and the same stroke. 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. 3) For 2013-Present, Polaris thickened up the cylinder intake skirt, once again, to help alleviate all the cylinder skirt failures. Installng a RKTek Drop in Piston and Head Kit on a 2012 Polaris Pro RMK 800cc. Heat is one of the primary causes of skirt collapse and skirt collapse is ONE of the primary issues with the OEM design.. If you have any questionscall us anytime we're here to help. 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. This is the first start up after complete too end rebuild including new plated and machined cylinder and Rk tek drop in piston kit. Polaris Patriot 850 Dual Ring Direct Replacement Pistons. 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. They are 100% unique to RK TEK! RK Tek 2 Stroke Performance. RK Tek sets itself apart from other performance shops by testing its products in the best lab in the world - the great outdoors. Dec 15, 2010 #1 my dad has a 02 800 the NON HO version. We NEVER use "call waiting" to "click" over to another call. Both of these kits offer SIGNIFICANT performance enhancement and extend engine life! The Polaris rod is approx 132mm in length and the stroke is 70mm yielding a rod-ratio of approx 1.88. Therefore, the rod ratio on the Arctic Cat 800 engine is WORSE than that of the Polaris 800 engine. But is useable. LOOKING fine and MEASURING fine are 2 VERY different things! I picked up a set of these on Friday. 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. When you are talking to us, you have our full attention and will not be cut short. Used in there Billet cylinder head. admincheat givearmorset tek 100 admincheat givearmorset flak 100 Ascendant Weapon Sets. 7) Another held belief is that the new AXYS piston has addressed the OEM short-comings mentioned above. The Ski Doo 800HO and 800R engines have a 132mm rod and 75.7mm stroke yielding a rod-ratio of 1.74. Performance Motorsports Canada 948 Keyes Drive, P.0. you can also send in your stock haed and he will cut it for his domes. Cart empty × Cart empty ... Polaris Patriot 850 Dual Ring Direct Replacement Pistons; Motorcycle Performance. NOTE: We return every phone call if a clear message is left. Look what's in Dirt Bike magazine this month. The Rod-Ratio is the ratio of the rod length to the stroke of the engine. 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. Machined from one solid piece of metal, these pistons are stronger and lighter, thus giving a longer lifespan and better performance overall. RK Tek is located in Preston, Idaho and is owned and operated by Kelsey and Rex (hence RK). This FUJI crank is a superior crank to the MAPE in every way. 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. Sold as a set of 2. Our CUSTOM pistons (Direct replacement, Drop In, AND Big Bore) are CUSTOM designed! 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. The MAPE crank was discontinued in 2013 and newer engines in favor of a new manufactured crank by FUJI. They have very a proprietary design that is unique to ALL of our pistons. It has EXCESSIVE skirt taper.. When you hear that all these aftermarket kits have a tighter tolerance than the OEM.. it is simply NOT true! They are also lighter than the OEM Piston and that will help with the acceleration from a stop. The truth is that the OEM piston's tolerances are in spec, they just don't stay there. well worth it if your looking for some more performance. RK Tek SKI-DOO 800R/ETEC Drop In Piston Kit ETEC Kit is ONLY $570 PTEK Kit is $845. 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 REAL issue is that the OEM piston does not REMAIN in spec after use. 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. Yes, that's right, RK Tek draws results from "real world" testing. You MUST MEASURE the piston in order to determine if the piston is "GOOD". One would hope that any of these other pistons would also contain this same OEM offset. Closed up to Jan 11. 5) It is also believed that there exists a Rod-Ratio issue with the Polaris 800CFI engines. Condition is "Used". Installation of ANY of our pistons will allow ANY Polaris CFI engine to reach a higher potential. ALL of the 2008-2012 800 Engines were prone to lower cylinder skirt cracking! We address this with our REV 2 Drop In Kit. Does any one have an opinion on this? Remember this, VERY IMPORTANT, a compression check will tell you little to nothing about the health of your skirts. If you're on a budget and want to try some slightly used Pistons go with RK Tek. Polaris thickened up the skirt, again, for 2011-12 CFI-2 Engines. Ski-Doo: ZX Sleds. You can have a BROKEN off lower skirt and the compression reading will not change! These pistons, as all my other CUSTOM pistons, follow this same design procedure, More clearly, the rod ratio is too small for this engine. Hopefully, this article will clear up some of the mis-conceptions that surround this engine and its internal design? In other words, IF your cylinder is fatigued, it will STILL be fatigued once a better piston is installed. Re: RK TEK head and new concept piston 2017 300 xcw test. The longer the rod, the higher the ratio, given the same stroke. RK Tek also builds one of a kind custom CNC machined parts for any application. 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. The OEM Polaris piston is 100% in spec and the proper size when new in the box! Installing ANY clever named piston kit will NOT fix your thin walled cylinder skirts! Fantastic service, and a pleasure to talk with Kelsey on the phone to place my order. The piston kits we offer (some call a fix kit.. we do not) are the highest quality piston on the market today.. Thread starter Danzick; Start date Dec 15, 2010; Forums. We, usually, end up altering MANY of the OEM piston's design aspects and "correct" the short-comings we feel are present. 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. This is 100% false!! Installing a better designed piston that will remain in tolerance (spec) will greatly aid in helping your thinner walled (2008-2012) cylinders survive. I'm not sure as I'm a newbie. There are some massive gains to be had by drastically altering the piston design. In other words.. your piston can LOOK perfect but MEASURE out of spec. Please visit our website at www.2strokeheads.com The other major issue is the LACK of lower piston support at BDC. RK Tek Inc is your premier 2 Stroke Performance Shop.. ALL we do is 2 Stroke Engines! Two actually as i have the head and test pistons on my both 2017 and 2011 bikes. 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! 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". We have spent the time and developed a Piston Kit and a Drop In Piston/Head kit for the 600 Twin.. He said an honest 10 hp and have nothing but positive feedback on it. One dome has some marks in it from a piston going bad. This thicker skirted cylinder WILL install into your 2011-2012 cases ONLY if you modify the upper case half to accept the thicker skirt. 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. We will be closed for the holiday weekend, enjoying some much needed family time. 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. The phone is busy all day long servicing our clients. 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. If it uses a 1/4" shim under it, then this is most likely the case. Doug Gardner. KTM and Husqvarna. Skirt collapse happens usually WITHOUT any scoring or visual appearances on the piston. We are the ONLY company that has a kit to aid in lower piston skirt support. This allows for a lot of rocking in the bore (not good). Please speak loud and clear when leaving a message. FUEL (NOT COOLANT) is the #1 cooling agent for ANY Engine (important to remember) and this engine has none! RK tek pistons? This is not a bad change but does very little to aid with the skirt collapse, extreme piston weight, and heavy ring drag. These pistons have about 1500 miles on them. This Price Already Includes a Refundable Core Deposit of $100. its got 1900 miles on it with around 100 psi of compression so we are going to replace the pistons. Ski-Doo. Wishing you all a very Merry Christmas, from our family to yours! September 17, 2019. RK Tek sets itself apart from other performance shops by testing its products in the best lab in the world - the great outdoors. Links : Use the side menu to navigate through our site. We will open again on … This FUJI crank WILL install without any modification into any 2008-2017 engine case. Talked with them a few times and the gains are real good. Running our piston vs. this piston WILL show some performance enhancements. 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. The new AXYS piston is basically, the SAME piston with some added oil retention grooves on the exhaust upper skirt. admincheat giveweaponset 0 100 admincheat giveweaponset 1 100 admincheat giveweaponset 2 … THIS is a great modification to perform and will help with crank failure. 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. Arrived at my house on Tuesday morning. RK Tech. They are designed with hard anodizing on the ring lands, pin boss and crown underside AND custom coating on the crown. 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