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Maximize your harvest efficiency with the MK Martin MK 5000 Gravity Box, a high-capacity grain box engineered for reliability, control, and seamless unloading in the field. With capacities of 500 to 605 bushels (via 8” and 12” extensions), this ruggedly built gravity box is ideal for mid- to large-scale farming operations looking to reduce trips and keep material flow smooth.
Constructed with a robust 12-gauge steel hopper and supported by a 4”x8” wall rectangular tube underframe, the MK 5000 is built to handle heavy grain loads with ease. The standard dual unloading doors within a 57” wide opening offer precise metering, allowing you to fine-tune the flow of grain whether you’re unloading into an auger, cart, or truck.
Need more flexibility? The MK 5000 supports a wide range of optional upgrades, including a hydraulic door opener, grain divider, and rear ladder all of which enhance convenience, safety, and productivity in demanding field conditions. Matched perfectly with the 365 Horst Wagon, this model is a reliable grain handling solution you’ll depend on year after year.
| Specification | MK Martin MK 5000 Gravity Box |
|---|---|
| Model | MK 5000 |
| Capacity (Bushels) | 500 (Standard), 570 (w/ 8" Extension), 605 (w/ 12" Extension) |
| Hopper Construction | 12-Gauge Steel |
| Under Structure | 4" x 8" x .188" Wall Rectangular Tubing |
| Unloading Doors | Dual 28" Doors within 57" Width, Metering Control |
| Chute Height | 17" – 21" |
| Box Length | 196" |
| Box Width | 101" |
| Height (Less Wagon) | 89" (Standard), 98" (w/ 8" Extension), 101" (w/ 12" Extension) |
| Height (On Wagon w/ 22.5" Tires) | 123" (Standard), 131" (8" Ext.), 135" (12" Ext.) |
| Weight | 3,610 lbs (Standard), 3,845 lbs (8" Ext.), 3,915 lbs (12" Ext.) |
| Wheel Base | 142" |
| Suggested Running Gear | 365 Horst Wagon – 425/22.5 Tires |
| Optional Features | Hydraulic Door, Divider Kit, Rear Ladder, Tarp Kit, Center Dump, Unloading Auger |
Overall rating: 4.6 / 5 from 94 reviews.
I've started using the mulcher I on several parcels of land 10 acres . I have grind down a couple of 14 inch stumps. Caution the mount bracket behind the mulcher motor exhaust gets extremely hot even with gloves on . But the unit so far seems to works very good it's well put together.
Forax Gas Powered Mulcher | Model GP40 | 40" Cutting Width | 14HP Kohler | For Tractors
The Firminator G3 is s heavy duty quality machine. The discs worked extremely well and planting and culti-packing is very smooth and easy. Working with Dillon at Ripping It Outdoors was a very good experience and seamless transaction.
Product was fairly priced and they delivered it quickly.
Pulls 100% better no sway and puts tongue weight over the axle
BP Conversions Bumper Puller Ball Hitch to Gooseneck Conversion System
Great machine. Working with Dillon was awesome. Even made me a custom mount for my Polaris.
Great device. Makes my property look good.
The machine is a Land Shark! Gobbled up brush and small trees and turned them into mulch in no time!
Forax Gas Powered Mulcher | Model GP40 | 40" Cutting Width | 14-15 HP | For Tractors
The unit arrived within the timeframe that was given. It’s an amazing implement. Would definitely recommend
Forax Gas Powered Mulcher | Model GP40 | 40" Cutting Width | 14HP Kohler | For Tractors
Hay rake works great. It’s a good value for the money. Ripping it outdoors was beyond helpful during the purchase!
Farm-Maxx Rotary Hay Rake | Model FRM-280 | Working Width 110" | 20+ HP | For Tractors
After spending way to much money for forest mulching services I discovered this wonderful machine. It's not a giant powerhouse forest mulcher, but it does everything a property owner needs to maintain a forested property. I wish I would have found it sooner.
Forax Gas Powered Mulcher | Model GP40 | 40" Cutting Width | 14HP Kohler | For Tractor
I wasn't sure what to expect, but it has proven to be a strong, durable, and terribly useful tool for clearing what I needed to clear. Thank you!
Works great and its easy to use.
Forax Gas Powered Mulcher | Model GP40 | 40" Cutting Width | 14HP Kohler | For Tractors
Love it . Now I am going to have to get a new tractor and a Lane Shark.
Baumalight MP330 Brush Mulcher | Cutting Path 30" | 15-40 HP | For PTO On Tractors
The Firminator is well built and functions well. I am having some trouble while planting mixed size seeds. Next time out I’ll try setting it so only the smaller seeds drop out the open it up for the larger seeds.
easy buying process and great communication. Mulcher works great, easily clears overgrown brush and even mulched a 5" thick mulberry tree fairly easily. running it off of my old 331 bobcat with no problem powering the drum at all. Only small issue which isn't a big deal is that the supplied hoses are about 16" too short to operate a full range of motion.
The Firmanator works great very well built .I am very happy I made this purchase.
This trap seems to be kinda hard to set off.
Works excellent and is very well made.
Over all built well. I like it is all cast iron and metal and not plastic. Had to modify fertilizer disc mount to fit correctly, nothing major, a little grinding. I modified the center link hitch point to accommodate my John Deere quick hitch. Have yet to plant with it but I’m sure it will work perfect. Love the grease fittings everywhere. Reminds me of the old farm equipment I grew up on, and still use periodically.
My firminator RT was delivered in good condition in ND. I will be using it next week. I have a 45 HP John Deere tractor that is supposed to lift 2000 lb but really struggles to lift this 6 foot firminator RT. I will just have to use in as a two pass operation for now. I do wish there was a better operating manual for this unit. Maybe that is something you can work on. I will give you an update once I start using it in a few days.
Great piece of equipment. Performs far better than I expected. One piece of advice - if property is significantly overgrown, consider the tractor attachment first to bring down the over growth and then switch to the UTV attachment to maintain property. No complaints worked perfectly.
Ordered a 36” clean out bucket for my mini excavator. Love it, welds are great. Works as it should.
Showed up on time and I will be using it to put in 15 acres of food plots in this weekend!
Great experience. Easy transaction and fast shipping. The blade is built well and heavy duty.
A good product !
Field Tuff 125 lb. Receiver Mount Spreader – 12V | Towing Power 15–25 HP | For ATVs, UTVs & Tractor
Looks great will use it this weekend
CL Fabrication Adapters | Multiple Styles | Universal Compatibility | Heavy-Duty Construction
Put this on Kubota 900 with winch hookup. This thing is a beast (within reason). I named it ‘Homie”, cause Homie don’t play. It will take care of stuff up to about 2” in diameter. You still have to remember that this is NOT like the ones on a bobcat or larger machinery. It does have its limits. But all in all I am very satisfied with it. Now on to the good part! The staff at Ripping It are outstanding! Especially Kayla in the office. She has gone above and beyond on making sure everything went right, from ordering to questions about installation. This young lady would be of great value at ANY company ! Her knowledge and personality are like over the top. This is my first experience with Ripping It Outdoors and I can only say positive things about them. With all that being said, I do fill out reviews on things I buy, AND I give a honest review. If it’s bad then you will know it. But if it’s good, well I tell the truth ! Again Kayla, from the bottom of my heart, a great big THANK YOU for all your help and just talking to you. I feel like we’ve know each other for years!
First Class communication and perfect delivery with great communication and fast. The equipment was excellent
TENT is easy to put up , material is tuff as told....only complaint is that i wish the bottom had about 3 to 4 inches overlap towards the inside so i could install a 2 x4 or something to help hold the tent down in high winds we have here in virginia thanks
Great product. Works very well in our arena and round pen.
Love it Well worth the money. Dillon did a great job well pleased
Ranew Outdoors Firmiseeder | Width 4', 5', 6' & 8' | Horsepower 25–75 HP | For Tractors
Hi, my name is Ken. I’ve had a great experience with Ripping It Outdoors. I purchased a Forax Hp40 Mulcher for my mini excavator. Kayla Patterson is who I dealt with from the beginning until I received it at my house. She has been wonderful to work with and looking forward to working with her with any other orders I purchase. Kayla answered any questions I had and kept me updated throughout the whole process, can’t say it enough just a wonderful person to work with!!
Forax Ultralight Mulcher | Model HP40 | Cutting Width 40" | Carrier 2-4-Ton | For Excavators
These are great feeders if you don’t have any feral hogs but if the hogs tear off the wiring harness from the timer to the feeder motor, you’re disabled. Then, if you ask for help from Outback, they refer you to the dealer but really you’re on your own for parts and repairs. I have three Outback feeders that work as designed. They’re 13 years old and have always served well but this feeder misses the mark by a very high margin. I’d NEVER buy this product again. Feeders need to be dependable and this unit is not.
Heavy duty , solid construction, exactly what I wanted and expected. Thank you
Hoelscher Inc. 4', 5', 6' & 8' Land Smooth Roller Pull Type | 25-50 HP | For Tractor
This is my first experience with Ripping It Outdoors. Fortunately I got Dillion as a representative and everything from sales to shipping was spot on.. Thanks Dillion for your help!!
Industrias America Header Trailer | Model 440 | Length 40' | Pull Type
The only thing is when hooking up the actuator on my ATV. The wire is long going to the plug in. What has happened in the past about this. Is their video showing the usage of the control?
Works great glad I bought it
It works great, but way too heavy for my Bobcat E26 excavator. Which is what I ordered it for. Almost useless at its weight on my machine.
Machine is fine
Every aspect was spot on!
Industrias America Header Trailer | Model 440 | Length 40' | Pull Type
