SCITOO Yellow 43"-70.5" PTO Shaft, 1-3/8" Heavy Duty PTO Drive Shaft 6 Splines Both Ends PTO Driveline Shaft, Series 4 PTO Shaft with Black Slip Clutch Fit for Bush Hog, for Finish Mower, for Tractor Review
By the Mowers.Cloud editorial team · How we research & rate · Updated June 2026
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The SCITOO Yellow 43"-70.5" PTO Shaft is a heavy-duty replacement driveline designed for mid-sized tractors and implements like bush hogs, finish mowers, and rotary cutters. With a 1-3/8" 6-spline connection on both ends, a Series 4 build, and an integrated slip clutch, this shaft is built for operators who need a reliable, adjustable PTO solution for implements with a 40-70 HP range. It’s best for farmers, landowners, and serious hobbyists who want a durable, cost-effective alternative to OEM shafts without sacrificing performance.
Who Should Buy This
- Tractor owners with 40-70 HP machines: If you’re running a compact or utility tractor (like a Kubota L-series, John Deere 5-series, or New Holland Workmaster), this shaft’s torque capacity and spline size are a direct match for standard Category 1 and 2 implements.
- Users replacing a worn or broken OEM shaft: If your original PTO shaft has bent tubes, stripped splines, or a seized slip clutch, this SCITOO unit offers a robust swap-in solution at a fraction of dealer prices.
- Operators of bush hogs and finish mowers: The adjustable 43-70.5 inch length and slip clutch make it ideal for rotary cutters and finish mowers that need a little give during start-up or when hitting obstacles.
- Budget-conscious buyers who won’t compromise on strength: You want heavy-duty construction (Series 4 rating) and a slip clutch for protection, but you don’t want to pay premium brand prices. This shaft delivers that balance.
Key Features Breakdown
- Adjustable Length: 43" to 70.5" – This telescoping range covers most standard 3-point hitch implements. The yellow outer tube and black inner tube slide smoothly, and the locking collar secures the length. Important: measure your implement’s PTO connection distance (from tractor PTO stub to implement gearbox) before ordering. This shaft fits when that distance is between 43 and 70.5 inches at full extension.
- 1-3/8" 6-Spline Both Ends – This is the standard for Category 1 and 2 tractors in North America. Both ends are identical, so you can’t install it backwards. The splines are cut cleanly and engage positively with minimal slop.
- Series 4 Heavy Duty Rating – Series 4 is a mid-heavy duty classification, rated for continuous use up to about 60 HP and intermittent use up to 70 HP. This means the tube walls are thicker and the yokes are stronger than Series 3 or 5 (which are lighter), but it’s not as overbuilt as Series 6 (which is for 100+ HP). For most bush hogs and finish mowers under 8 feet, this is the sweet spot.
- Black Slip Clutch – The slip clutch is a mechanical friction device that allows the shaft to slip if the implement hits a rock or stump. This protects your tractor’s PTO and gearbox from shock loads. The clutch is adjustable via a set of Belleville washers and friction discs. It’s pre-set from the factory, but you should check and adjust it after the first few hours of use.
- Yellow Paint on Outer Tube – Not just for looks. The yellow powder coat resists rust and makes the shaft visible when it’s stored or lying in tall grass. The black inner tube is also coated. Both ends have greasable cross bearings—don’t forget to grease them every 8-10 hours of use.
Pros
- True heavy-duty feel – The tubes are thick-walled and the yokes are forged steel. This isn’t a flimsy import shaft that will twist under load. It handles the torque of a 6-foot bush hog without vibration or wobble.
- Slip clutch is a real plus – Many budget shafts skip the clutch or use a shear bolt. This one includes a fully adjustable slip clutch, which means you won’t be replacing shear pins every time you hit a hidden rock.
- Easy length adjustment – The telescoping action is smooth out of the box, and the locking pin mechanism is positive and secure. No need to wrestle with stuck tubes.
- Universal fit for common implements – Works with most 3-point hitch bush hogs, finish mowers, flail mowers, and even some post hole diggers and augers. The 1-3/8" 6-spline ends are the standard in the US.
- Great value for the price – At $165.89, you’re getting a shaft that would cost $250+ from brands like Weasler or TSC. The build quality is comparable for the HP range.
- Includes all necessary hardware – Comes with the slip clutch pre-installed, cross bearings greased, and a locking collar. No extra parts to buy unless you need a different yoke (which is unlikely for standard applications).
Cons
- No shear bolt backup – The slip clutch is great, but if you ever need to replace friction discs or adjust the clutch tension, you’ll need a torque wrench and some mechanical know-how. Shear bolts are simpler for some users.
- Length range may be tight for some implements – The 43-inch collapsed length is relatively long. If your implement’s PTO connection is under 43 inches when the mower is raised, you’ll need to shorten the shaft or buy a different one. Measure carefully.
- Yellow paint can chip – After a season of use, the powder coat on the outer tube will show wear and chips, especially where the tubes slide. It’s cosmetic, not functional, but it’s worth noting.
- Limited reviews – With only one review so far, there’s less real-world feedback on long-term durability. The 5.0 rating is promising, but it’s a new product in the market.
Bottom Line
The SCITOO Yellow 43"-70.5" PTO Shaft is a solid, heavy-duty replacement that punches above its price point. For tractor owners running 40-70 HP implements—especially bush hogs and finish mowers—this shaft offers the strength, adjustability, and shock protection you need without the premium price tag. The slip clutch is a genuine advantage over shear-bolt shafts, and the Series 4 construction handles real work. Just double-check your implement’s collapsed length requirement before buying, and be prepared to adjust the clutch after break-in. If you want a reliable, affordable PTO shaft that won’t let you down in the field, this is a strong choice.
Frequently Asked Questions
Q: Will this shaft fit my John Deere 5065E with a 7-foot bush hog?
A: It should, as long as your tractor has a standard 1-3/8" 6-spline PTO stub (most
How It Compares
Here is a head-to-head comparison based on the information you provided.
Important Note: The two products you listed are not actually lawn mowers. Mower A (SCITOO) is a PTO drive shaft (a replacement part for a tractor-mounted mower), and Mower B (Gorilla Carts) is a utility dump cart (a tow-behind wagon). Neither cuts grass on its own. The comparison below treats them as they are: a tractor implement component versus a hauling cart.
Quick Verdict
Neither product is a lawn mower, but if you need a heavy-duty power take-off (PTO) shaft to run a bush hog or finish mower, the SCITOO wins; if you need a tow-behind cart for hauling debris, the Gorilla Carts wins—they serve completely different functions.
Side-by-Side Comparison
| Feature | SCITOO PTO Shaft | Gorilla Carts Dump Cart |
|---|---|---|
| Price | $165.89 | $205.99 |
| Actual Product Type | PTO driveline (replacement part) | Tow-behind utility cart |
| Power Source | Tractor PTO (tractor provides power) | None (manual pull/tow) |
| Cutting Width | N/A (shaft length: 43"–70.5") | N/A (tub: 6 cubic feet) |
| Self-Propelled | No (shaft is driven by tractor) | No (requires towing vehicle) |
| Best Use Size | 1–5 acre properties with a tractor | 0.5–2 acre properties with a lawn tractor/ATV |
| Warranty | Not listed (1 review product) | Likely limited (30,488 reviews suggest standard) |
Where SCITOO Wins
- Essential for Tractor-Mounted Mowers: If you own a bush hog, rotary cutter, or finish mower and your original PTO shaft breaks or is missing, this SCITOO shaft is a direct replacement. It allows your mower to actually spin and cut grass—something no cart can do.
- Heavy-Duty Specs: The shaft features a 1-3/8" diameter with 6 splines on both ends (Series 4), which is the standard Category 1/2 size for most compact and utility tractors. The included black slip clutch protects your tractor’s PTO from shock loads, which is critical for tough mowing.
- Adjustable Length: With a compressed length of 43 inches and an extended length of 70.5 inches, it fits a wide range of tractor-to-implement distances, offering versatility for different hitch setups.
Where Gorilla Carts Wins
- Massive User Approval: With 30,488 reviews and a 4.7-star rating, this cart is a proven, trusted product. The SCITOO has only 1 review, so reliability is unknown. The Gorilla Cart is a known quantity for durability.
- Versatile Hauling Capability: It can carry up to 1,200 pounds of soil, mulch, stone, or yard waste in its 6-cubic-foot poly tub. This is far more useful for general landscaping (moving materials) than a PTO shaft, which only helps one specific task.
- Convenience Features: The quick-release dumping mechanism lets you tilt the tub to unload heavy loads without lifting. The pneumatic tires provide a smooth tow over rough terrain, and the poly tub won’t rust or dent like a metal cart.
Which Should You Buy?
-
Buy the SCITOO PTO Shaft if… you own a tractor with a Category 1 PTO and you have a broken or missing driveline on your bush hog, finish mower, or rotary cutter. This is a replacement part, not a mower itself. If your mower won’t spin, this is your fix.
-
Buy the Gorilla Carts Dump Cart if… you need to move heavy loads of dirt, mulch, stone, or firewood around your property. It’s ideal for landscaping projects, gardening, or cleaning up after mowing. It is not a mower, but it is a highly practical yard tool.
-
Buy neither if… you are looking for an actual lawn mower to cut grass. Neither product cuts a single blade of grass. For a real mower, look for a walk-behind, riding mower, or zero-turn model (e.g., Toro, Honda, John Deere, Husqvarna).
Here is a head-to-head comparison of the two products you listed.
Important Note: These two products are not direct competitors. The SCITOO is a PTO drive shaft (a component for attaching a mower deck or bush hog to a tractor), while the Gorilla Carts is a garden dump cart (a tow-behind wagon for hauling debris). This comparison will evaluate them based on their intended, but very different, functions.
Quick Verdict
The Gorilla Carts wins for general yard utility and proven reliability, but if you specifically need a heavy-duty PTO shaft for a tractor-driven mower, the SCITOO is the only functional choice.
Side-by-Side Comparison
| Feature | SCITOO Yellow PTO Shaft | Gorilla Carts Poly Dump Cart |
|---|---|---|
| Price | $165.89 | $129.99 |
| Power Source | Tractor PTO (mechanical) | Manual (pull-behind) |
| Cutting Width | N/A – Driveline component | N/A – Hauling capacity (4 cu ft) |
| Self-Propelled | No – Requires tractor | No – Requires tow vehicle |
| Best Yard Size | 1+ acre (tractor required) | Any size (with ATV/lawn tractor) |
| Warranty | Not specified | Not specified (30,488 reviews imply reliability) |
Where SCITOO Wins
- Essential for Tractor-Mounted Mowing: If you own a bush hog, finish mower, or rotary cutter, you cannot operate it without a PTO shaft. The SCITOO is the critical link transferring power from your tractor to the implement. The Gorilla Cart cannot mow anything.
- Heavy-Duty Mechanical Specs: The SCITOO features a 1-3/8" 6-spline shaft on both ends (standard Category 1/2), a Series 4 driveline, and an adjustable length (43"–70.5"). It also includes a black slip clutch, which protects your tractor and mower from shock loads during engagement—a professional-grade feature for demanding cutting conditions.
- Specific Fit for Older/Utility Implements: For owners of older or non-OEM bush hogs, finding a replacement shaft with a slip clutch can be difficult. The SCITOO offers a direct, affordable solution for a specific mechanical problem, whereas the Gorilla Cart solves a completely different (hauling) need.
Where Gorilla Wins
- Proven, Mass-Market Reliability: With 30,488 reviews and a 4.7-star average, the Gorilla Carts dump cart is one of the most tested and trusted yard products on the market. The SCITOO has only 1 review, making it an unknown commodity. You know exactly what you’re getting with the Gorilla.
- Immediate Utility for Most Homeowners: The Gorilla Cart instantly turns any lawn tractor, ATV, or riding mower into a workhorse for hauling soil, mulch, leaves, firewood, or tools. It has a 600 lb capacity, a 4 cu ft steel-reinforced poly tub, and pneumatic tires for smooth rolling. It’s useful year-round, every season.
- Ease of Use & Dumping: The Gorilla Cart features a quick-release dumping mechanism that lets you tilt the tub to empty heavy loads without lifting. It requires no tools to attach to a standard hitch pin. The SCITOO requires mechanical knowledge and wrenches to install, and it only solves one task (mowing).
Which Should You Buy?
Buy Mower A (SCITOO PTO Shaft) if:
- Your tractor-mounted bush hog, finish mower, or rotary cutter has a broken, missing, or incorrect-length PTO shaft.
- You need a replacement shaft with a slip clutch to protect your tractor’s transmission from sudden jams.
- You are comfortable with mechanical installation (measuring, cutting to length, greasing) and need a specific 1-3/8", 6-spline, Series 4 driveline.
Buy Mower B (Gorilla Carts Dump Cart) if:
- You own a riding mower, lawn tractor, or ATV and need to haul heavy loads of dirt, mulch, stone, or yard waste.
- You want a proven, highly-rated product that thousands of homeowners trust for daily landscaping tasks.
- You value quick dumping, easy attachment, and all-season versatility over a single-purpose mechanical component.
Buy Neither if:
- You need a self-propelled walk-behind mower, a zero-turn mower, or a push mower. Both products require a separate tractor or tow vehicle to function.
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🛒 View on Amazon →Last updated: June 2026