Will this fit the old blue King Kutter hogs?

Not sure. You need to count the splines and make sure they are the same, along with the diameter of the shafts

Is this a tapered 12 spline or a straight cut 12 spline? Thank you

this hub has 12 tapered splines

Where can I find a belt drive pulley with 1 1/2 bore with 12 splines

I'm not sure I understand your question. Technically this is used for the bottom end of a bush hog gear box and would have the blade carrier and cover welded to it. IF you are trying to convert that type of gear box to a right angle belt drive, I would suggest the tractor maintenance area of Tractor Supply/Rural king or whatever flavor of farm store you have locally (or McMaster online). They likely have hubless belt pulleys for equipment like bailers and threashers. Pick the size you need and bore center hub hole large enough for this hub and weld it on.... hopefully that helps.

Can I get stump jumper splined hub for 3210 bushog brand?

What I was able to determine is that drive hubs are pretty generic and broken down by horsepower. The higher the horsepower the more splines

Stump Jumper Flywheel 12 Splined Hub | Desertcart Philippines

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Description

⚙️ Upgrade your rotary cutter game with the hub that fits like a glove!

EASY INSTALLATION - Slides effortlessly onto output shafts with optional bolt kits for a perfect, lock-tight fit.
UNIVERSAL COMPATIBILITY - Works seamlessly with multiple rotary cutter brands—expand your equipment’s versatility.
COMPACT DURABLE DESIGN - 3" diameter and 2.25" height with a reinforced lip for long-lasting blade carrier stability.
TRUSTED BY PROFESSIONALS - Highly rated with 4.8 stars—join the community of users who demand reliability and performance.
PRECISION ENGINEERED 12 SPLINE HUB - Tapered splines ensure a secure, wobble-free fit on most rotary cutter shafts.

The Stump Jumper/Flywheel 12 Splined Hub is a precision-machined, universally compatible hub designed to fit multiple rotary cutter brands. Featuring a 12-spline tapered design for secure attachment, it measures 3 inches across and 2.25 inches tall, with a reinforced lip for blade carrier stability. Trusted by professionals and backed by high customer ratings, this hub ensures reliable, long-lasting performance and easy installation with optional bolt kits.

Reviews

C**E

Get it tight.

Make sure you use lock time red when you put the castle nut on.

12.08.2025

J**H

Great

Works as described.

26.05.2025

J**N

good product

Fast delivery

17.10.2025

M**R

My first time replacing one of these. It was in interesting project.

I had about 5 Lbs. of reletively new 6011 1/8 rods and an old sears welder. After removing the old worn spline. I ground the seufaces and fitted the spline to the jumper. With a 2" round stock I held the pieces together. And started to spot weld the pieces in place. I got everything welder in place and fittet it ti the bushog. "looked food almost balanced and good fit. So I removed it again and ground the welds down to get a good second layer of weld to insure a good hold. Well I ran out od rods eo I did a 1 day order from Amazon and got 15 Lbs od rods both 1/8 and 3/32". And SUPRISE I started to weld and the rods spit and splattured but would not weld. They had been wet or at least damp. I have no electrode oven so I wait.

19.11.2024

J**W

12 spline hub

Worked for my bush hog.

20.12.2024

P**T

Perfect fit for my old

A little work involved to change but worth it. Perfect fit for my old shredder

15.11.2017

D**E

great fit

Looks like this will work as intended will leave review when used for the first time

4.08.2022

C**M

Awesome product.

Perfect fit. Working nicely.

15.12.2019

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Sold byAmazon PhilippinesDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Best Sellers Rank	#215,316 in Automotive ( See Top 100 in Automotive ) #124 in Engine Flywheel Tools
Customer Reviews	4.8 out of 5 stars 61 Reviews

Stump Jumper/Flywheel 12 Splined Hub

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Common Questions