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The Kasco VARI-SLICE KOS Series offers robust, tractor-mounted overseeders designed for efficient seed placement in prepared or minimally disturbed soils. Available in working widths from 4′ to 10′ with row spacing options of 3″ or 4″, these seeders are engineered to meet a broad range of seeding applications—from small plots to large pastures. With capacities ranging from 2.5 to 15 bushels and weight ratings to match compact through mid-size tractors, the KOS Series delivers uniform seed distribution, reliable ground engagement, and compatibility across the 25–65 HP tractor class.
Built to Kasco’s professional agricultural standards, each model features precision slicing blades, integrated seed metering, and a rugged frame to handle tough terrain. Whether you're planting grass seed, forage blends, or cover crops, the VARI-SLICE lineup is an ideal solution for operators seeking controlled depth, row spacing flexibility, and efficient seed-to-soil contact.
VARI-SLICE Overseeders |
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|---|---|---|---|---|
|
Model |
Width |
Row Spacing |
Bushel Capacity |
Weight (lbs) |
| KOS-1203 | 10′ / 120″ | 3″ | 15.0 | 2550 |
| KOS-1204 | 10′ / 120″ | 4″ | 15.0 | 2460 |
| KOS-963 | 8′ / 96″ | 3″ | 7.7 | 1860 |
| KOS-964 | 8′ / 96″ | 4″ | 7.7 | 1795 |
| KOS-723 | 6′ / 72″ | 3″ | 4.4 | 1530 |
| KOS-724 | 6′ / 72″ | 4″ | 4.4 | 1480 |
| KOS-603 | 5′ / 60″ | 3″ | 3.3 | 1140 |
| KOS-604 | 5′ / 60″ | 4″ | 3.3 | 1080 |
| KOSL-483 | 4′ / 48″ | 3″ | 2.5 | 990 |
| KOSL-484 | 4′ / 48″ | 4″ | 2.5 | 960 |
| CROP | SEEDING RATE (lbs/acre ) | SEED DROP (SETTING) |
| ALFALFA | 15 - 20 | 3/16" |
| BERMUDA GRASS, COMMON | 10 - 20 | 1/16" |
| BIRDSFOOT TREFOIL | 8 - 10 | 3/32" |
| BLUE GRASS | 60 - 100 | 5/8" |
| BUCKWHEAT | 45 - 60 | 7/16" |
| CANOLA | 10 - 12 | 1/8" |
| CLOVER, RED | 8 - 12 | 1/8" |
| CLOVER, SWEET | 10 - 13 | 1/8" |
| COWPEAS | 25 - 40 | 3/8" |
| FESCUE | 150 - 180 | 7/8" |
| ILLINOIS BUNDLEFLOWER | 2 - 3 | 1/16" |
| LANDSCAPE MIX | 120 - 150 | 7/8" |
| MILLET, BROWN TOP | 30 - 50 | 3/8" |
| MILLET, JAPANESE | 25 - 40 | 3/8" |
| MILO (GRAIN SORGHUM) | 10 - 25 | 1/4" |
| OATS | 65 - 95 | 5/8" |
| ORCHARDGRASS | 10 - 12 | 1/4" |
| PARTRIDGE PEAS | 10 - 15 | 1/8" |
| PEAS, AUSTRIAN WINTER | 90 - 120 | 5/8" |
| RYE GRASS | 80 - 110 | 9/16" |
| RYE, GRAIN | 80 - 110 | 9/16" |
| SWITCHGRASS | 8 - 14 | 1/8" |
| TIMOHTY | 8 - 12 | 1/8" |
| TURF GRASS MIX | 60 - 100 | 5/8" |
| TURNIPS | 3 - 4 | 3/32" |
| WHEAT | 120 - 180 | 11/16" |
NOTE: This seeding chart is to be used as a guide only. Desired seeding rate (pounds/acre) may vary according to application and geographic location. NOTE: Recommended seeding rate is for pure stand; rates will be reduced in seed mixes.
Overall rating: 4.6 / 5 from 88 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 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.
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
I had a guy from a shop come cut the shafts and hook me up. It went well. I've been using the mulcher and the tractor saw on my two tractors and having fun.
Baumalight MP560 Brush Mulcher | Cutting Width 60" | Up to 75 HP | For PTO On Tractors
1st day with it,getting use to it.
Our order came in quicker than expected. The unit is easy to attach and operate. Works Great!
Buffalo Turbine Hydraulic Debris Blower | Model BT‑HYSS4 | 12,000 CFM | 16–40 GPM | For Skid Steers
i love it, i'm a little inexperianced with it but i'll learn, i've never messed with chemicals much. instead of putting it on an atv, i put it on a skid steer
New so far so good have only used it once. Will need some rain to truly judge it. It’s built like a tank easy to use and showed up as expected.
Great product
