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Your cart is empty. Don't be fooled by others that have copied my kit. There is only one PATENTED top end tapping solution WORLD WIDE!
ROCKOUT rocker shaft inserts solve one of the most annoying problems with the Harley Davidson Twin Cam engine.... that maddening tapping sound that rolls in around 2000-3000 RPM's & leaves just as quickly as RPMs increase. My research discovered that the noise is caused by the factory's sloppy fit between the rocker shafts and the hold down bolts meant to keep them in place. The rocker shafts are allowed to side in & out, and rotate, hitting the bolts at high frequency & creating that awful tapping noise. You can see the marks in the hardened bolts from the hammering in the pic above. My inserts fill that gap, locking the shafts in place, stopping the noise.
Tapered for easy installation, professionally made to exacting tolerances so each is virtually identical. Kit includes 4 inserts (and a spare!), 2 Viton O-rings for under the support plates, full instructions & easy installation hardware.
Here's just one actual review from a customer on the largest online HD forum...
"I had been telling the tech I use at the dealer about the Rockouts. So when I had my bike in there for some work I had him install the Rockouts. The ticking is gone and when the service manager walked by my bike as it was running he stopped and said my bike was the most quiet he had ever heard. Had the tech order some for his bike. In fact I think he said he ordered a set of 10. I have to agree. None of my previous Harleys were this quiet. FWIW I'm running Woods TW 777 cams and the valve train sounds like a well oiled sewing machine."
Stop that aggravating tapping forever!
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Elisha D
Reviewed in the United States on February 7, 2025
Great product super easy to install, did the job of getting rid of the annoying rattle form the rocker shafts. You think Harley would have came up with this on their own. Oh well this is a perfect solution to a annoying problem.
Hazard Area
Reviewed in the United States on February 4, 2025
I had to replace one of the two rocker support plates, and the holes are larger than the original, and the lockers dropped in almost all the way. I just pushed them in with my thumb, and tapped lightly with a screwdriver handle. The old plate required the press fit instructions. Good product.
Dallis Z.
Reviewed in Canada on September 21, 2024
As advertised
Mick C.
Reviewed in the United States on September 14, 2024
They help easy to install
Joseph Hobbs
Reviewed in the United States on September 11, 2024
While these do eliminate rocker noise, it’s a Harley and there are a thousand other noises to take its place. Now I can hear the lifters and pushrods better. Cool product, but more about the fun of tinkering on the bike than solving a useful problem.
James M.
Reviewed in the United States on August 25, 2024
Easy to install into the rocker arm support plate. Getting to that point is another story. (if you don’t know what you’re doing, get a service manual. Emailed John from the company got a response in less than a day and he answered all my questions in great detail. I bought 2 kits because they are such a “simple” fix to an annoying problem that all Harley have it will have, at some point. Just do them.
Dale
Reviewed in the United States on June 19, 2024
My twin cam after 509 cams installed has never been quieter. Order breather box gaskets while your at it.
Gerald Letkeman
Reviewed in Canada on December 4, 2024
Perfect fit for my 09 Harley Ultra, 96cubic inch engine. Tapered design pressed in snuggly.
Curtis M.
Reviewed in the United States on November 18, 2019
I loved this product! I used to have a rattle coming from my Rocker Boxes that I couldn't figure out! I had rebuilt my engine completely including the heads with new Valve Springs/Valves, and new Rocker Arms/New Shafts and was dismayed when I started it up for the first time that the dam rattling noise was still there even after replacing everything in the Rocker Boxes/Heads! I stumbled on these by accident and checked them out on Amazon, The hardest thing was getting the Rocker Arm bolts out, I ended up having to unbolt my front engine mount after struggling trying to get enough clearance to get the bolt out without hitting the under side of the frame with the bolt head of the Rocker Arm Support bolt. Once out I put the 1st sleeve in and it worked like a charm, then for whatever reason I started the 2nd insert and even though I carefully checked the cutout in the Rocker Shaft I must have caught an edge and I made a piece of junk out of the 2nd insert in the kit. I then took a deep breath and installed the rest of the inserts with no trouble, glad they put an extra one in the kit! I put my bike together started it up and listened for.....nothing, no rattling noise! Yippee, it has been driving me nuts for years! Great product, follow the instructions and double/triple check everything is aligned(I used a tapered 12" pinch to make sure that the Rocker Shaft/Arm are correctly aligned to start pressing in the insert) when you start to press in the insert if there is ANY resistance felt, stop! Check again and proceed with caution, once in you will be happy with the results as I am!
John Morrisroe
Reviewed in the United States on October 8, 2016
All I can say is...WOW! I purchased these after stumbling onto them on a Harley forum and after being aggravated with the noise coming from my 2012 Road King for months. Ive tried different oils, countless hours of research, making adjustments here and there and nothing worked. After reading others reviews, I decided to give these a try.Install took about 3-4 hours by myself with allowing a half hour of push rod bleeding down time per cylinder. Install was pretty simple if you have a basic knowledge of your bike and mechanics in general. I would definitely recommend having a service manual handy for bolt removal and install procedure (including torque specs). Also, be sure to read and follow the instructions carefully. In my particular instance, I did not clean all the oil out from my breather bolt hole and ended up blowing out the bottom part of the bolt threads. Luckily for me, it was cosmetic but had it been another hole I would have been in seriously trouble.After having these installed now about 100 miles all I can say is this is what you need to get rid of the noise. I was astounded by how quiet my bike is now! Granted, these obviously do not eliminate every single valve train noise, that would be near impossible. However the initial improvement was fantastic. I also ride with a fairing, which does allow the rider to be able to hear more engine noise, and even so these did the trick. I can honestly say this has been the best product I have ever purchased for my Harley.
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