Gen-Y Hitch Shock Absorbing 5th Wheel Pin Box - Fabex 665 and M&M 665 - 30,000 lbs - 4.5K TW
(237 reviews)
Price: $1,172.98
In Stock
Gen-Y Hitch Shock Absorbing 5th Wheel Pin Box - Fabex 665 and M&M 665 - 30,000 lbs - 4.5K TW
Item # GY65SR
Our Price: $1,172.98
In Stock
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- Reviews (237)
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Gen-Y Hitch Fifth Wheel King Pin - GY65SR
- Fabex 665
- M and M 665
- 30000 lbs GTW
- Upgraded Pin Box
- Gen-Y Hitch
- Absorbs Road Shock and Reduces Chucking
- Fixed Turret
This shock-absorbing pin box provides a smooth, safe ride while you tow your fifth-wheel trailer. The all-in-1 box has no air bags to refill or small parts to replace. 4.5K pin weight.
Features:
- 5th-Wheel king pin box upgrades the existing pin box on your 5th-wheel trailer
- King pin inserts into your truck's 5th-wheel hitch
- Shock-absorbing design ensures a smooth, steady ride
- Technology functions like a torsion axle to limit transfer of road shock from trailer to truck and vice versa
- Reduces chucking and rough fore-and-aft motion
- Limits bounce and jarring up-and-down motion
- No airbags to maintain and fewer moving parts to repair or replace than with other shock-absorbing solutions
- Technology functions like a torsion axle to limit transfer of road shock from trailer to truck and vice versa
- Heavy-duty steel construction
- Powder coat finish resists wear and corrosion
- Simple, bolt-on installation
- Mounts with included 5/8" diameter bolts
- Made in the USA
Specs:
- Designed to replace Fabex 665 and M&M 665 5th-wheel pin boxes
- Towing capacity: 30,000 lbs
- Pin weight capacity range: 2,000 lbs - 4,500 lbs
- 5-Year limited warranty
Notes:
- Average break-in period for hitch = 1,000 miles.
- In order for the pin box's shock absorption to work correctly, make sure your pin weight is within the pin weight range.
- Because the Gen-Y Hitch Executive is shorter than the Fabex 665 or M&M 665 pin box, the clearance between your trailer and tow vehicle during turns might be reduced.
| Calculated Tongue Weight | Executive Tongue Weight Capacity Required |
|---|---|
| 1,600-2,599 lbs | 3,500 lbs |
| 2,600-3,599 lbs | 4,500 lbs |
| 3,600-4,599 lbs | 5,500 lbs |
| 4,600-5,599 lbs | 6,500 lbs |
| 5,600-6,599 lbs | 7,500 lbs |
| 6,600-7,599 lbs | 8,500 lbs |
| 7,600-8,599 lbs | 9,500 lbs |
Built-In Shock Absorption for a Smooth Ride
If you've ever towed a fifth-wheel trailer before, you're no stranger to road shock. Driving over uneven terrain can result in a rigid, bumpy ride. And uncomfortable fore-and-aft chucking can occur when you're starting and stopping. When all of the motions combine, the road shock can even potentially damage your truck or trailer.
This Gen-Y Hitch torsion pin box is designed to absorb road shock at the connection point to create a safe, smooth ride. This is thanks to the internal construction of the box, which is similar to that of a torsion axle.
Pivot points are built into the Gen-Y pin box. This allows for movement between the box, which attaches to your trailer, and the king pin, which connects to the fifth-wheel hitch in your truck bed. When your trailer bounces or jerks, the king pin will move accordingly.
Built into the Gen-Y pin box are tubes with inner bars that are surrounded by rubber cords. As the king pin moves, these inner bars twist inside of the tubes, attempting to follow the pin's motion. But the rubber cords prevent the bars from twisting too far. And as each bar turns, these cords compress to absorb the rough shock. This means that any shock experienced by your truck can be absorbed before it reaches your trailer, and the shock experienced by your trailer won't get transferred to your truck.
GH-8050 GenY Hitch Executive Fifth-Wheel King Pin Box with Torsion Shock Absorption - Fabex 665/M&M 665 - 30K
GH-80943 Mounting Bolt Kit for Gen-Y Executive 5th Wheel Pin Box
Video of Gen-Y Hitch Shock Absorbing 5th Wheel Pin Box - Fabex 665 and M&M 665 - 30,000 lbs - 4.5K TW
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Video Transcript for Review of Gen-Y Hitch Gooseneck and Fifth Wheel Adapters - Upgraded Pin Box - GY65SR
Hello everybody, this is Jeff at etrailer.com. Today, we're gonna take a look at the Gen-Y Hitch Shock Absorbing 5th Wheel Pin Box for the Fabex 665 and the M&M 665 pin boxes, and this has a 30,000 pound gross towing weight capacity. Now, this 5th wheel kingpin box is an upgrade to the existing Fabex 665 or M&M 665 pin box that's on your 5th wheel trailer. This 5th wheel pin box will replace the factory pin box on your trailer, and the kingpin right down here is what'll insert into your truck's 5th wheel hitch. Now, this one here uses a nice shock absorbing design, which ensures a nice, smooth, steady ride. The technology in this functions just like a torsion axle to limit transfer of road shock from your trailer to the truck and vice versa.
Wanna pop an insert up there just to show you what we're looking at. So if you look at these sections right here where these bolts are, it's gonna have the technology I mentioned. Like a torsion axle, it has the outer tubes with the rubber cords around the inner bar, and this will help reduce any chucking and rough fore-and-aft motion, it'll also limit any bounce and jarring up-and-down motion. And what's nice about this system is there's no air bags that you have to maintain, and there's fewer moving parts to repair or replace them with some of your other shock absorbing solutions that are out there. Now, this pin box also offers a pin weight scale, which is built in to help you balance your trailer, that scale's located on this lower arm right here, and that'll let you know if the load needs to be adjusted before you tow.
The vertical load or pin weight that refers to the weight that a fully loaded trailer will exert downward on the hitch in your truck bed, and too little hood vertical load can cause trailer sway, too much can cause poor performance. I did wanna zoom in and show you that scale I'm talking about, you can see it right here. That scale has a red on each end, at the very top up here, that is the maximum vertical load, and then the red at the very bottom is the minimum vertical load, the green that you could see as in the middle. Now, the red areas are the too high and too low areas, so you don't want the white indicator line that's over here to be in those areas, you want it to be in the green area. The maximum red right up here, that indicates the maximum vertical load of 4,500 pounds, the red at the bottom is the minimum red, and that indicates no vertical load.
So you do wanna be in the green, which is a pin weight capacity range of 2,000 pounds to 4,500 pounds, and a vertical load of at least 2,000 pounds is recommended for this built-in shock absorption to function effectively. So basically again, that white indicator line there, when you get this all hooked up and loaded down, you want that line to be indicating in the green area. Now, this is a nice heavy duty steel construction, has a nice powder coat finish to resist wear and corrosion. It is a simple bolt on installation, the mounting holes on this will line up to the factory holes and it mounts with these included 5/8 inch diameter bolts and washers to install. This is made in the USA.
Again, the towing capacity on this is 30,000 pounds. But that should do it for the review on this Gen-Y Hitch Shock Absorbing 5th Wheel Pin Box for the Fabex 665 and the M&M 665 pin boxes..
Customer Reviews
Gen-Y Hitch Shock Absorbing 5th Wheel Pin Box - Fabex 665 and M&M 665 - 30,000 lbs - 4.5K TW - GY65SR
Average Customer Rating: 4.6 out of 5 stars (237 Customer Reviews)
This shock-absorbing pin box provides a smooth, safe ride while you tow your fifth-wheel trailer. The all-in-1 box has no air bags to refill or small parts to replace. 4.5K pin weight.by: Steven08/11/2022
The Gen-Y gooseneck has been excellent! I now have approximately 12k miles on mine and it rides very nicely with very limited chucking and handles rough roads very well. I’d highly recommend that you contact Gen-Y BEFORE ordering to ensure you get the correct load rating product. Gen-Y and Etrailer have provided excellent customer and tech support! This product definitely frees up your truck bed and does require a precise line up to hitch.
by: Dave04/25/2024
This hitch reduced chucking very well, I have a 2004 3500 Dodge Ram 4x4 Conestoga riding truck with very stiff suspension, the torsion action of the hitch definitely helps when crossing bridges and pot holes. The 5th wheel is an older Keystone Copper Canyon that is in great shape. I Have 12K miles with the new hitch.
by: James04/11/2023
I love this hitch I put it on my 35’ Astoria fifth wheel it pulls great and the shock absorbers help with a smooth ride.we took a ten day trip from Ga to Maine last September and had no problems with this hitch. I guess the only negative is that it’s not as easy as a regular fifth wheel hitch to hook up by yourself but after a few times you can line it up ok. The best thing is that no big hitch taking up space in my truck bed just a ball
by: James 03/25/2023
I have towed now for a few thousand miles since changing to this pin box and honestly wish I had done this years ago! It tows so much better than my 5th wheel box did! Feels more stable, no more bucking and so much softer and better feel when towing! Not to mention so much less hassle dealing with a 5th wheel hitch!
by: Philip07/26/2023
Makes life a lot easier l don’t have to remove my hitch from the bed of my truck to use it. Just flip the ball and there you go.
The gooseneck hitch actually pulls better than the 5th wheel hitch I had.
It is rather heavy so come up with a good plan for installing, I used the front end loader on my tractor which allowed me to do the install by myself.
Great product!!!
by: Michael04/18/2024
I have been well pleased and excepcetionally satisfied with the Gen-Y pin box. We just returned from Texas making a 3000 mile roundtrip and encountered multiple rough roads.There was none of the chucking that I experienced towing with the turning point 5th wheel. A gooseneck is much superior to a 5th wheel in my opinion
by: Kevin11/07/2023
I’m really happy with my purchase. Please take into account that this hitch is 2-3” shorter than the kingpin box. They do make an extended version. I had to buy a 4” ball offset, as I couldn’t open my tailgate Without hitting the camper. I love having the open bed space, it seems to be smoother and it’s less noisy then the pin box.
by: David 05/08/2024
Easy install with a couple people, after install from a fifth wheel hitch it’s noticeable less noisy, less moving parts, frees up bed space and has a much smoother ride. I recommend this hitch 100% for fifth wheel campers.
by: Mike05/01/2023
This product is a chucking ENHANCER, not a chucking dampener. Additionally, despite what you have read, my experience with GenY customer service has been terrible. GenY will not support their warranty program, they will try to tell you everything is OK, when the fact is, their product is faulty and does not function to GenY product literature statements “Built-In Suspension Creates Up to 90% Smoother Ride”.
I purchased the GenY executive hitch from eTrailer on 3/10/23, etrailer sent the wrong unit and to etrailer’s credit - they quickly took responsibility and replaced with the correct unit on 3/24/23. I installed on my DRV Elite Suites PS3 just in time to attend the SOITC rally at the Outer Banks on 4/13/23. When we left for this 750-mile one-way trip, the GenY load indicator was in the middle of the green zone, I measured the pin load at 5,200 pounds. Bedrail clearance was my reason for buying the GenY, it replaced a Trail Air on my DRV and a Reese 27,000-pound hitch on my 2022 F450. Bottom line, the GenY system provided no improvement in bedrail clearance, but did offer the ability to switch in different gooseneck balls to adjust for bedrail clearance.
GenY states that a 1,000-mile break in period is required before the GenY torsion system is fully effective. My experience was that at 750 miles the torsion system on the GenY had sagged to it lowest point with the load indicator in the unit outside of the green, this also resulted in losing nearly two inches of bedrail clearance. It looks like it has a metal-to-metal stop so that the lowest the indicator will go is to the white lines outside of the green. I called GenY from the RV park and was told that the unit would not sag further. I purchased a Curt gooseneck ball which was 2 inches higher than the Ford ball to regain bedrail clearance having to rapid ship it to the RV park.
Chucking became downright scary on the 750-trip home. As an example, chucking was induced every time my truck’s ten-speed transmission shifted up. Upon arrival home, I again contacted GenY customer service with a full expectation that GenY would replace the unit. Instead, here is their response: “I spoke with our QC Manager regarding your hitch. He said that you are in the correct unit and being at the top end of the green is normal after the break-in miles. As for the bedrail clearance he said that you would be able to lower the pin box down a set of bolts (with our pin boxes you are only required a minimum of 4 grade eight bolts per side) or use a B&W ball as they are roughly 1 1/2” taller.” This is unacceptable...
by: Doug04/04/2024
Does a fantastic job. After 4 or 500 miles the ride quality smoothed out considerably. Extremely well built!!
by: David 04/03/2024
Without a doubt the biggest difference maker I have ever used in my 50 plus years pulling trailers. When my wife had to concede that the Gen-Y gooseneck hitch made such a drastic difference.... enough said!
by: Mark 03/12/2024
Great replacement for the Curt Turning Point pin box! Easy to install and took a couple hours since I did it by myself. I had to purchase new 5/8” locknuts as the originals from the Curt install needed replacing. I also had to buy (4) 5/8” nuts from Tractor Supply since the Curt install had nuts welded on the front 4 bolt locations. I used the Curt 5/8” bolts and flat washers since they did not need replacing. I haven’t had a chance to get the trailer on the road yet, but see no reason why it will not pull nicely with the Gen Y gooseneck. It will be pulled with a 2022 Chevrolet Silverado 2500HD 6.6 Duramax and 10 speed Allison transmission.
by: Anthony 12/29/2023
Best upgrade I have done on my RV. Hitching up a gooseneck is a little more difficult but well worth it. It allowed me to remove the large heavy 5th wheel hitch out of the bed of the truck. I love the damping of the trailer bouncing. This hitch allows my RV move with the truck and I don’t feel that bounce of the truck is passed to the RV hitch like it was with the 5th wheel hitch. Hitch is heave and it really would help to have two people to install it. I’ve done it twice. Once with help and once without. Using the bed of the truck and a lever I was able to install the hitch myself.
by: Patrick03/02/2023
The toy hauler pulls so much smoother. I wasn’t expecting to increase my MPG but, I gained a 1/2 mile per gallon. Dealing with etrailer was great as usual.
by: Randy03/22/2023
Quality build, easy install, let your truck and trailer do the heavy lifting. My wife and I did this install and took about an hour to get it bolted. I also bought the Grade 8 bolt kit. I’m hauling 20K GTW. The original hitch had Grade 5 bolts and only 5 per side. Now I have 6 per side, 160ft.lb. on bolt torque
by: Kenton B04/18/2024
Order arrived on time. Packaging looked almost perfect with one corner of the box slightly damaged. Two of us installed the hitch without too much of a problem. It is heavy. Used some WD40 on the inside of the mount. Balance it on the tailgate of the truck. One strong man plus an old guy was able to get it installed. I will update this once we have a couple thousand miles on it.
by: Joseph 03/28/2024
All I can say is THANK YOU Tiffani S.! At first there was a mix-up and some issues with the order and re-applying a rebate that had expired, but finding Tiffani fixed everything. She was able to make things happen the way they should've from the beginning, and she got me all squared away. I have not installed the hitch yet, but things look like they should fit and are high quality.
by: Jeffery 03/23/2024
This pull so much nocer than a 5th wheel hitch.
by: Blake 11/03/2022
This was the perfect replacement for my 5th wheel king pin. It was easy to install and has a much smoother ride! I would definitely purchase this again!
by: Dan 11/14/2023
Because of my bad back I replaced my B&W Companion hitch & Lippert Rota Flex hitch pin which I loved using. There is a learning curve with hitching a gooseneck trailer but with some reflective tape on the center line above the coupler on the gooseneck and a telescoping yellow ball hitching aid with a magnetic base on the truck bed just in front of the ball. This hitch setup is softer and smoother towing than my old setup and I have about 5k miles of use.
by: Darin03/22/2020
Installation was very straight forward, it is heavy so you need something to prop it up for you while you get at least one bolt started in each side. I used the bucket on my tractor to hold it up. I only have one tow in so far for about 50 miles so still early to review. It certainly works as advertised for taking out a lot of the trailer feedback on rough roads, uneven transitions, etc. It is an improvement in ride quality and makes towing a big fifth wheel more comfortable. Necessary? Probably not but it does spoil you a little bit. One problem though that Gen-Y is working on fixing is the ball to pinbox is a little bit longer and I did hit the bed cap at about 60 deg of turn while backing in at an angle. It cleared when I tested it in the flat driveway, but not by much. They are going to come up with a fix. I'm at 7 1/2" clearance from the overhang to the bed caps sitting flat. This is with a '18 Chev Silverado HD 8' bed and a '19 Momentum 351M
by: Reece06/01/2023
The Gen-Y hitch is very stout & well built. Fit & finish was excellent.
Installed myself in about 30 minutes.
by: Ron01/04/2024
Just wanted to give you a heads up, hitch just arrived as promised. Packing could have been a bit more effective as it is apparent that its been dropped unfortunately it broke the finish in a couple places. I will address it and im not asking for anything as i know your not the shipper. Thanks
by: Mark A.11/11/2023
Are you kidding ? This has got to be the best hitch setup available on the market of ALL hitches. Fantastic, durable, quiet, no bucking, chucking or issues of any kind. We have a 16,000 lb, trailer and I sometimes forget we are even towing with our 2018 F-450. I have recommended this hitch to everyone and enjoy the "clean" truck bed when not towing.
by: Bob08/10/2023
Just received today after I tracked the whereabouts with not-so-accurate UPS LTL FREIGHT tracking. I difficulty located local freight company that just received this terribly torn up cardboard package with this 205# parcel. Hitch had been placed onto some pallet enroute because it was no longer contained in its GEN Y box. Extent of damage I’ve yet to determine though it has a long and deep gash into the powder coat finish down the exposed side.
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See what our Experts say about this Gen-Y Hitch Fifth Wheel King Pin
- Recommended Replacement for Fabex MDL 665 PinboxFor an amazing replacement for your Fabex MDL 665 pinbox, I recommend the Gen-Y Hitch Shock Absorbing 5th Wheel Pin Box # GY65SR. The Gen-Y pinbox is designed to fit the bolt pattern of your fifth-wheel trailer. As far as capacity, it has a really high capacity of 30,000 lbs of maximum towing capacity and 4.5K tongue weight capacity. It comes with shock-absorbing technology to provide you with an ultra smooth, steady ride. On top of it all, it is 100% made in the U.S.A. If you need a lighter...
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