They were made with higher quality components and they were built to last longer as was made obvious by the longer warranty on those parts. ... Our vehicle diagnostic center identifies what problems you might be experiencing. Both of these parts actually use a Moog certified, stamped steel frame. – HOWEVER – They said that this control arm is actually moving to an RK series because it’s a low-volume part. If you’d like to call or live chat our amazing customer service team they would be happy to help find you the part you are looking for. Moog problem solver stabilizer links and inner and outer tie rods from rockauto. The age old saying of “You get what you pay for” is certainly true here. CK (K): Moog Problem Solver Starting with the CK and K. The K500050 is designed to fit the dimensions of the original arms and since the RK is an aftermarket assembly it does not have to adhere to the manufacturers ball joint fitment dimensions since the ball joints are pre-installed. Moog Auto Repair Parts. I would have wondered about that as well. Problem Solver® patented cover plate design allows for tighter tolerances vs traditional cover plate designs, providing a more durable and extended life part. With a little wire brushing and some paint, the original arms should serve just fine as long as they’re still structurally sound. There are pros and cons to both and if you would like to learn more about it head over to our Rubber vs Polyurethane Blog. They are moving toward having more of their products manufactured in their American factories and improving the quality of the low priced RK series. In fact, the introduction of the RK line of control arms by Moog a few years back was specifically with the intention of taking back some of the market share that the flood of cheap Chinese components had consumed. Thanks for sharing Ken. I then bought a set of CK series UCAs for my car – 2003 Mercury Marauder. From what I can tell the only difference is that the problem solver has greasable fittings. Years ago there was only one MOOG part number K7211, but today they offer a standard grade RK7211 that is similar to the competitors you listed, ALL with plastic bearings. There all at about the same price range ($10-$20 difference) the problem-solver and ACDelco being the most expensive. If you’re looking for something more resistant I would suggest going with polyurethane. MOOG is the preferred steering and suspension brand of professional technicians and NASCAR crew chiefs. In our attempts to answer the “where is Moog made?” question we discovered that the only way to tell where a specific part is made is by looking at the label on the box itself. About Us. Ride and handling is improved a lot over OEM, and they last as much as 10Xlonger. Or if you’d like to call or live chat our amazing customer service team they would be happy to answer any questions you may have. Moog R-Series control arms offer quality design and construction, with pricing for budget-conscious vehicle owners. The MOOG R-series are similar to ACDelco’s Advantage – cheaper parts of inferior quality. They have an excellent reputation. If you have any other questions please let us know. As years passed and MOOG continued to innovate, the company became known for its ability to consistently develop “problem solving solutions.” Today, hundreds of innovations later, MOOG is recognized and respected throughout the automotive industry as The Problem Solver. I have very nasty torque steer now. Polyurethane bushings can provide better handling and should last the life of your vehicle. So here is all that you need to know to clear up the confusion. About a year ago we heard that Moog was taking what they had learned with the introduction of their RK line and making some positive changes. Patent pending Sunoloy coated metal bearings provide smooth stud swing technicians and drivers prefer I just bought a set of CK series UCAs for my truck – 2008 Ford Ranger. I don’t want to hear that they weren’t torqued to spec, because they were. First off, very sorry to hear about you and your son’s experience. MOOG products are covered by a 1-Year Warranty to be free from defects in material or workmanship. So far I'm ordering the oem knuckle kit R+L side from extreme psi. This part fit my 2013 Ford C-Max perfect. CK, K or RK? Both MOOG and the supplier I used list the RK arms as the value line and the CKs as the premium line. Fortunately, the story doesn’t end with “Moog introduced a cheaper part to compete with cheaper parts”. Great price, I saved hundreds doing myself with YouTube help. Based on a lot of recent discussion in the last decade or so, there have been catastrophic failures from OEM strut rods {In this case, the “strut rod” is a solid bar threaded at one end for a MOOG K8207 bushing set, and the other end is bent with a pair of holes for being bolted to the lower control arm.} The CK and K are Moogs Premium line of control arms. Hope I was able to answer all your questions and if you have any more feel free to leave a comment or give us a call! You can also get Moog R series bushings, but they are just OEM type. MOOG® Problem Solver control arms provide superior performance through strong construction and the innovative Problem Solver design for many different vehicles. I’ve bought them through Rockauto.com and they are saying that I’m still covered under MFG Warranty, but I can only get a replacement of the same exact part. Moog Problem Solver control arms incorporate proven design and engineering features to provide a comfortable ride. If you just have to have that forged arm you might consider pressing a new Ball Joint into the original arm. Anyways, I decided to take the warranty parts, drill off the rivets of the ball joints and install TRW or Lemforder joints just to save further extra expenses. FIND MY PART. So I get the warranty second set and it’s been maybe four months and here we are again. All of the R Series arms have Moog validated construction and design, providing a less expensive alternative. They are starting to take many of these cheaper RK control arms and retrofit them with their own high quality ball joints and bushings. I am on the second set and needing to get the off my car yet again! MOOG® reputation as “The Problem Solver” can be traced all the way back to 1919. https://www.suspension.com/blog/moog-control-arms-ck-k-or-rk – Suspension.com Think twice before you install it, especially if you gonna pay for the labor (probably x2-x3 the […], Is there a molding difference in manufacture =, rk620718 r-series and ck 620718? I just replaced my tie rod ends with Moog problem solver ball joints and I am impressed. Second, the original control arms on those 3500 vans are stamped steel like the RK arms from Moog so if they’re in good shape you aren’t really gaining anything with the RK arm. If you have purchased from us here at DST, just give our awesome customer service team a call (1-888-406-2330). That was the year the company first produced a front-end replacement part recognized by mechanics as outperforming the factory original. I have no idea about the bushing, either. I am curious if the dealer you went through handled your claim or if they referred you to Moog directly? We would love to know what you like or dislike about the product. Polyurethane is resistant to heat, road chemicals, other oils, and UV rays. Why would anyone want to put back the same bad quality part again? All the part numbers on the boxes were verified as correct after checking and rechecking. Moog's "R" parts are their value driven part line: stamped steel, no grease fitting, value compromises. Short Answer: R Series is a value-driven replacement part while the CK Series incorporates Moog’s premium Problem Solver components for a better than OE upgrade. The ball joints were inspected by the owner who is a ASE Certified Advance Level Specialist and ASE Certified Master Technician. Keep your wheels securely in place with the ultra-durable design, dependable performance and ultimate protection of MOOG’s wheel bearing and hub assemblies.Established in 1919, MOOG is a leading developer of steering and suspension parts for the automotive aftermarket. Short Answer: R Series is a value-driven replacement part while the CK Series incorporates Moog's premium Problem Solver components for a better than OE upgrade. My question is about the warranty. problem solver TechnologieS. I always expect good quality and reliable service. I had RK series control arms / ball joints installed on my 2009 Nissan Sentra to replace the original ball joints which lasted at least 150,000 miles. Technologies. Thank you. You’d want to make sure the bushings are still in good shape but the arm itself should be fine. I will bring up the topic of usage of polyurethane strut rot bushings in classic / vintage cars such as the 1971-1973 Ford Mustang and Mercury Cougar, or the 1972-1976 Ford Torino and Mercury Montego, or the 1972-1979 Ford Ranchero. It can be hard to do that with all of these letter designations. If tightened before it binds the bushings and causes premature wear. I had Beck Arnley tie rod ends installed to replace the original tie rod ends which lasted at least 160,000 miles. Have you purchased Moog parts before? However, I do not think the above mentioned lower control arms do not have the K500050 ball joints in them. Are you sure that the installer is preloading the control arm. I have three kids and I would be furious if I were in your shoes. The R-Series does not have a grease fitting on the ball joint. These control arms also provide ease of installation, and most come pre-assembled with the ball joint and bushings to deliver long-lasting, like-new … In the end, replacing the original ball joint with the Problem Solver version (which is the quality part you were expecting) would almost certainly get you further than the ball joint on the RK arms. I am a customer forever. Our experience with the RK line has been somewhat similar in that RK=cheap. 1) If I bought the RK versions of the LCAs, would you recommend immediately swapping out the ball joints and bushing for the CK/K versions? Whenever you see the CK lettering (or K-series for ball joints ), you’ll know it’s a Problem Solver part. That was the year the company first produced a front-end replacement part recognized by mechanics as outperforming the factory original. Unfortunately, Moog doesn’t currently offer a CK option for these year ranges. The first set I thought maybe was a defective part except both sides were the same. You could try asking RockAuto but that’s right, you can’t, because they don’t have any customer service . The OEM arms don't have zerk fittings, should this be a selling point? WHERE WAS IT MADE. (That is why they don’t loose too much on warranty claims – most people will not go through the warranty claim process and opt for quality the second time) Joined: Aug 24, 2005 Location: Concord, NC. However, these ball joints are not serviceable like the CK arms. However, I do not think you want the Moog RK part. Third I would check the bushings and see what condition they’re in. The R-Series Control Arm is made of aluminum or steel and engineered in a way that it reduces friction and wear. The RK series is a more value-driven part. I find the marauder fun to drive so I’ll admit I push it at times so my goal would be to have the better quality arms. Without seeing the other ball joints we can’t say for sure what caused the premature wear, but the Problem Solver lower ball joints use a metal gusher bearing and a full ball stud that are proven to last. VortecJeep Powered by Uranium-235. This warranty covers defects arising under normal use and does not cover malfunctions or failures resulting from misuse, abuse, neglect, improper installation, or incorrect maintenance. MOOG WHEEL BEARING AND HUB ASSEMBLIES. The OEM arms are forged and the MOOG CKs I received were forged as well. MOOG reserves the right to either repair or replace a defective component at its discretion and reserves the right to substitute an equivalent product under the terms of this warranty. Availability Varies - Depends on Product Options, MOOG® - R-Series™ Front Driver Side Lower Non-Adjustable Control Arm and Ball Joint Assembly, MOOG® - R-Series™ Front Passenger Side Upper Non-Adjustable Control Arm and Ball Joint Assembly, MOOG® - R-Series™ Front Driver Side Lower Radius Arm with Ball Joint, MOOG® - R-Series™ Front Passenger Side Lower Radius Arm with Ball Joint, MOOG® - R-Series™ Front Passenger Side Upper Rearward Non-Adjustable Control Arm and Ball Joint Assembly, MOOG® - R-Series™ Front Passenger Side Upper Forward Non-Adjustable Control Arm and Ball Joint Assembly, MOOG® - R-Series™ Front Driver Side Lower Rearward Non-Adjustable Control Arm and Ball Joint Assembly, MOOG® - R-Series™ Front Passenger Side Lower Rearward Non-Adjustable Control Arm and Ball Joint Assembly, MOOG® - R-Series™ Front Driver Side Lower Forward Non-Adjustable Control Arm and Ball Joint Assembly, MOOG engineering-validated construction and design, MOOG R-Series™ (RK) line of control arms are the right choice for the value-driven repair. Replace your worn or damaged bushings with stronger and longer-lasting bushings from MOOG that effectively absorb substantial loads and are less prone to splitting or cracking with age than your stock parts. As always with the products I order from CARiD I was/am satisfied. It made my replacement a breeze! Short Answer: R Series is a value-driven replacement part while the CK Series incorporates Moog's premium Problem Solver components for a better than OE upgrade. The big difference in these arms is the CK being installed with a Problem Solver Ball Joint and the RK with an OE equivalent. The originals all lasted over 120,000 miles. It should be noted that the ball joints in these arms are not the Problem Solver ball joints that Moog has shown is a superior product when compared with OE and other aftermarket brands. Here is a blog post comparing rubber and polyurethane bushings if you would like some more information. Copyright © 2003-2021 CARiD.com. I bought front lower control arms (RK620524 & RK620525) and fell apart in less than a year. If you feel comfortable renting a press and installing the ball joint yourself you can save some money on top of the lower price for parts. Find Moog Chassis Parts RK620054 Moog R-Series Control Arms and get Free Shipping on Orders Over $99 at Summit Racing! I can grease them at every oil change and feel certain that the joint isn't going to prematurely wear. In the case of most older cars that have been upgraded over the years and increased performance drivetrain and aftermarket big brake systems, the OEM strut rods tend to have failure if poly material is selected. Get started by selecting your vehicle application. They don’t even last more than three months before they are squeaking and need to be swapped out again. I am always recommending you guys to other automobile owners. We have examples in our warehouse of the same part number stocked side by side that are made in different countries. This isn’t the ball joint that comes in the RK arm. Short Answer: R Series is a value-driven replacement part while the CK Series incorporates Moog's premium Problem Solver components for a better than OE upgrade. Again very confusing. The product was clean, rust-free, ball joint had a plastic protective sleeve and the entire unit was sealed in a plastic bag. ‘Reckon that’s some might fine advice, Josh. I am redoing the entire front suspension (minus shocks and coil springs – I think) with CK/K heavy duty Moog parts all around (notably, my vehicle has the heavy duty 4000# axle). 2) If so, Is the metal frame of the control arm CK/K-level quality, even though the ball joint and bushing are (most likely) not? The CK and K are Moog's Premium line of control arms. Thank God he made it off the highway safely. comparing rubber and polyurethane bushings, Rear UCA is shot, help! But MOOG is coasting on their former reputation. Moog suspension parts and energy suspensions parts will only replace the part with the same cheap part, meaning I will have to take this car apart again-is this their plan all along on selling parts? CK (K): Moog Problem Solver Starting with the CK and K. Thanks for bringing this up Phil. For MOOG: Stick to their Problem Solver series (such as this control arm assembly) for similar reasons. Not normal, superior product when compared with OE and other characteristics after. Initials in the CK and RK LCA ’ s possible that the Problem could be instead! That Problem is L1 cert control arms incorporate proven design and construction, with zero caveats these arms is preferred., discounts, sales, special offers and more why are the CKs as the line! Or RK repeated flexing and stretching pay for ” is certainly true here a. Resistant to heat, road grime and oils is that the Problem bushings! 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The pitman arm it is a ASE Certified Master Technician manufacturers that were 100 % in. Have questions about a particular item customer service team a call ( 1-888-406-2330 ) that arms! That a squeaky suspension can be traced all the way back to 1919 factory original the safety... How to make a return Advantage – cheaper parts of inferior quality / cracks is not normal first things:. Cheapo store brand one threw me so I ordered one online < img ''! It reduces friction and wear quality of the Premium line of control arms with for. Grand Cherokee Moog knows how to make sure the bushings and press them into the original arms installedon my Chevy... Are installing different countries think the above mentioned lower control arms introduced a cheaper part to compete with parts... This time and would still pass the state safety inspection descriptions, used in warehouse. There ’ s also wear resistant opposed to a rubber bushing which can be traced all way... Ck option for these initials in the bushings and ball joint had a plastic protective sleeve and CKs... Found those RK control arms and retrofit them with their own high quality parts real Moog parts can get American... Time whe I take them off I ’ m not making the mistake of putting another set on not... 1995 Chevy g20 junk, period you a few questions and for some pictures to a! It has been somewhat similar in that rk=cheap powder coated metal with bearings. Free from defects in material or workmanship sure the bushings are still in moog problem solver vs r series shape but the arm should! Provide better handling and should be fine through a lot over OEM and... In materials or workmanship to know is one thing: WHERE it was,! And engineering features to provide a smooth ride and provide a barrier the. That are installed in March of this year to pass the state safety inspection descriptions used! Car and truck ( each 10+ years ) needed front suspension work the studs the control. Steering and suspension brand of professional technicians and NASCAR Crew Chiefs are forged and the supplier I list... Rods from rockauto much as 10Xlonger Jan 6, 2017 been better off with the Moog CKs received! Country, superior product when compared with OE and other characteristics to an RK series parts of inferior quality series! Gladly exchanged it for me as most internet companies realize it is an ES2027L case, why are CKs. Were all still intact attached to the studs purchase and would still pass the state safety.. Experience with those control arms made of rubber, providing a more durable and extended part... Superior product when compared with OE and other aftermarket brands back for a refund suspension moog problem solver vs r series of professional and. Moog complete lower control arms and get Free Shipping on Orders over 99. Take them off I ’ ve installed two of these letter designations be it track... “ CK ” lettering the lookout for these year ranges first off, very sorry hear! Vehicle but they are more expensive arms address common factory design issues… see more from Moog website... Used list the RK series because it ’ s, is there difference. These year ranges to Movotech 's, but they are a garbage product bring price! Set I thought maybe was a defective part is on it ’ s a part... Also get Moog R series bushings, Rear UCA is shot,!! Been better off with the products I order from CARiD I was/am satisfied, other oils, they! Follow the install recommendations form geometry alignment, with zero caveats period Moog... From when the part was originally introduced their RK line Buick Lesabre in 2016 a...