Set Screw PTO Extension Adapter for 21-Spline Tractors and Implements

Description

When your implement needs to sit a few inches further back from your tractor or you’re dealing with clearance issues around your 3-point hitch, this extension adapter gets the job done. Maybe you’ve got a rotary cutter that’s hitting your drawbar or a tiller that needs more room to work properly. This handy adapter gives you that extra 4-13/16 inches you need while keeping everything connected at the same speed and power.

What You’re Getting

• Direct 21-spline to 21-spline connection that maintains full power transfer
• Set screw attachment that locks securely without tools or complicated mechanisms
• 4-13/16 inch extension gives you the clearance you need for proper implement operation
• 125 HP rating handles the power from most modern tractors without breaking a sweat
• Heat-treated steel construction built to handle the shock loads and constant torque of farm work

Built for Real Farm Work

This adapter works with any tractor and implement that use the standard 1-3/8 inch 21-spline setup. Whether you’re running a modern high-torque tractor with a brush hog, operating a rotary tiller that needs more clearance, or connecting any other PTO-driven equipment, this extension keeps everything aligned and working like it should.

Made to Last

PTO adapters take serious abuse, handling full engine torque through constant engagement cycles. This one’s built from quality steel with proper heat treatment to resist wear and maintain the tight tolerances your equipment needs. The precision machining ensures full spline contact so power transfers smoothly without the slipping or binding that wears out cheaper parts.

Installation Notes

Clean both PTO connections thoroughly before installation—any dirt or grease buildup prevents proper seating. The set screws need to be snug but not over-tightened, which can distort the adapter housing. Once it’s on, double-check that everything’s secure before you fire up the PTO. This adapter’s a straight extension, so it doesn’t change your RPM—just gives you the extra length you need.