I've got the AGT xz20r, but these will work on pretty much any machine. Install is a breeze, 5 minutes max. And now there's linear resistance as you actuate the pilot control valves. This allows much more precise movements and slow or fast movements as you desire, much less jerky, and if it does jerk because of something you did, it stops the controls from oscillating back and forth. Highly recommend!

Installed on a TPM 16 ,So far i like the way the levers feel ,they felt like wet noodles before, not anymore way easier to control., would definitely recommend this upgrade, very easy to install.

I installed the kit in about a minute, maybe two. Controls feel much better now. My machine is an H15R. Swing motor cushion valve and hydraulic cooler is my next mod.

Love the new feel. Jay Flay is a great guy to do business with. Springs much better than Amazon springs. Hands down!!

Night and day change on controls on my brand new KRW232.
Less than 10 minutes to install on both sides.

The springs does a great job slowing the machine down for easier control would highly recommend.

After searching google I checked Spring Pilot, watched a guy install Gen2 springs on a AGT QNT 30R mini excavator, it operated very smooth, without hesitation I ordered the Gen 2 kit, received kit in 2 days, installed springs on my AGT QNT 50R, $30 kit--less than 10 minute install made a huge difference in operating the mini, now its very smooth.

Seller: 10 out of 10!
Product: 100% as described. Won't completely correct the issue but on a budget and for a 10 min no tools needed job, the results are obvious and immediate.
Seller went above and beyond and displayed interest in details in how I used the gen 1 kit and gen 2 kits separately.

(Gen1 for track controls & gen2 for pilot controls)

Seller answered questions, gave details and shared experience and other persons reviews specific to my application.

Absolutely recommend this Seller, his product.

Thanks a million James!

I installed Gen 2 Spring kit on the Kymron XH42D and it made a huge difference!!! Made controls much smoother and there's no more jerking when moving the controls at a faster rate.

I just bought a huayee 16c and this is a must have!!! Keeps the pilot controls from jiggling around smooths out all boom operations!!!

I just installed a spring kit on my new SDLE20 and I’m very satisfied with the results. It smoothed my machine up tremendously. I’ll definitely purchase for my next machine also. If you’re on the fence about these making a difference, take my word that they work.

Got springs for pilot control for Cartiwell 1.6 PRO. Works firmly, with smooth handling. Thanks

The set made our machines go from uncontrollable to where a 5yr old could run them. Great product. If you have pilot controls there are a must

These springs should come factory on the machine! It took longer to find a 5mm hex head than it did to put them on. After the install of course to try it out. Probably 90% of the jerky movement was gone. If you use your machine an hour a month or 10 hours a day. Get a set.

What a difference the pilot spring kit has done to my mini excavator. 15 minutes to install and super easy. Night and day compared to the factory joy stick control. Thank you again!!!!