126-8926 / 126-4324 PTO Clutch for Exmark Radius E, S & X | Warner 5219-205, 5219-201
126-8926 / 126-4324 PTO Clutch for Exmark Radius E, S & X | Warner 5219-205, 5219-201
Overview
This HiTorque BIGBearing electric PTO clutch is an upgraded aftermarket replacement for select Exmark and Toro mower applications using OEM part number 126-8926 (Warner 5219-205) or 126-4324 (Warner 5219-201).
This clutch uses a 1-1/8-inch crankshaft bore, approximately 7.2-inch pulley, 12-volt operation, and counter-clockwise rotation. Do not order by mower series or deck size alone—confirm the original clutch number, or look up part number in an official parts diagram using complete mower model and serial number before purchasing.
HiTorque BIGBearing Design
- Upgraded aftermarket electric PTO clutch
- Advertised HiTorque rating: 130 ft-lbs
- Original Warner reference rating: 125 ft-lbs
- BIGBearing design with an enlarged pulley bearing
- Machined billet-style pulley
- Snap-ring-retained pulley bearing designed to allow bearing service
- Integrated blade-brake assembly
- Crankshaft bore: 1-1/8 inch / 1.125 inch
- Pulley diameter: approximately 7.2 inches
- Voltage: 12 VDC
- Rotation: CCW from the pulley side
- Integral-style electrical connection
Compatible Model Families
| Mower | Common Deck Path | Fitment Notes |
|---|---|---|
| Exmark Radius E-Series | Select 48", 52", and 60" | Must use the 126-4324 or 126-8926 family |
| Exmark Radius S-Series | Select 48", 52", and 60" | Engine and serial-number dependent |
| Exmark Radius X-Series | Select 48", 52", and 60" | Confirm the model-specific Exmark diagram |
| Toro Titan HD 2000 | Select 60" | Includes documented 74463 and 74480 applications |
| Toro Titan HD 2500 | Select 60" | Includes documented 74472 and 78472 applications |
This table identifies compatible model families, not blanket fitment. Production year, engine package, crankshaft size, deck configuration, and serial range can change the required clutch. The mower’s official parts diagram must identify one of the listed part-number paths.
Important Bore Warning
| Clutch Family | Crankshaft Bore | Pulley |
|---|---|---|
| 126-8926 / 5219-205 126-4324 / 5219-201 |
1-1/8 inch | Approximately 7.2 inches |
| 126-8925 / 5219-204 126-4323 / 5219-200 |
1 inch | Similar 7.2-inch class |
Do not confuse this clutch with 126-8925 / Warner 5219-204. The 126-8925 family uses a 1-inch bore and can look nearly identical in photographs. A pulley measurement alone will not identify the correct version.
If your original clutch or parts diagram calls for the smaller-bore family, use the 126-8925 / Warner 5219-204 PTO clutch instead.
Common Symptoms of a Failing PTO Clutch
- Mower blades will not engage
- The clutch clicks but does not begin turning the deck belt
- Blades engage when cold but stop after warming up
- The clutch slips or loses blade speed under heavy load
- Grinding, rattling, pulley wobble, or bearing noise
- Damaged wiring or intermittent electrical engagement
- Burning smell or excessive heat around the clutch
A weak battery, charging-system problem, damaged PTO switch, poor ground, glazed belt, seized idler, or dragging deck spindle can produce similar symptoms. Inspect the electrical and deck-drive systems before replacing the clutch.
FAQ
What PTO clutch replaces Exmark or Toro 126-8926?
This HiTorque BIGBearing clutch is an aftermarket replacement for 126-8926 and Warner 5219-205 when the mower application and physical specifications match.
Does this fit every Exmark Radius E, S, or X-Series mower?
No. Radius mowers can use different PTO clutches based on engine, crankshaft size, model number, deck configuration, and serial range. Confirm that the official parts diagram calls for 126-8926, 126-4324, 5219-205, or 5219-201.
Does this fit Toro Titan HD mowers?
It fits select Titan HD 2000 and Titan HD 2500 applications, including documented 60-inch models 74463, 74480, 74472, and 78472. Confirm clutch part number before ordering.
Does this replace 126-4324 or Warner 5219-201?
Yes, this replacement is marketed across the related 126-4324 / Warner 5219-201 path. Warner publishes the same 1-1/8-inch bore, 7.2-inch pulley, 125 ft-lb rating, CCW rotation, and integral connection for 5219-201 and 5219-205. Compare pulley offset, wiring, and the anti-rotation setup before installing.
Is this the same as 126-8925 or Warner 5219-204?
No. The 126-8925 / 5219-204 clutch uses a 1-inch crankshaft bore. This 126-8926 / 5219-205 replacement uses a 1-1/8-inch bore. They must not be interchanged.
Is this a genuine Exmark, Toro, Warner, Ariens, or Gravely clutch?
No. This is an aftermarket replacement. OEM names and part numbers are used for fitment identification and cross-reference purposes.
Need Help Confirming Fitment?
Use the PTO Clutch Fitment Help page before ordering. Send a clear photo of the number on the original clutch if possible or the mower’s complete model and serial number.
For the complete number-family breakdown, see the 126-8926 PTO clutch cross-reference guide.