Kubota Mower Blade Reducer 1-1/8" OD to 7/8" ID

Fitting a Kubota 11558 mulching blade to your LM1160 deck shouldn't mean shelving a perfectly good blade because the center hole is a few millimeters off. This reducer bridges exactly that gap — 1-1/8" outer diameter to 7/8" inner diameter — so your blade seats correctly and your deck gets back to work.

How it solves the problem

The Kubota 11558 mulching blade is a solid performer, but its center hole is sized for a different spindle than the LM1160 deck runs. Without a properly fitted reducer, you're either looking at wobble, unsafe fitment, or leaving a quality blade unused. This piece fits snugly into the blade's center hole and brings the opening down to the correct 7/8" bore — precise fit, no play, no improvisation.

• Outer diameter: 1-1/8" — matches the 11558 blade center hole
• Inner diameter: 7/8" — fits the LM1160 deck spindle
• Designed specifically for this blade-to-deck combination
• Compact, low-profile fit that doesn't interfere with blade seating

Built for the job

This isn't a generic adapter hoping to fit — it was developed for this exact Kubota application. The dimensions are tight by design. You get a reducer that holds its position during operation rather than shifting under load, which matters when you're running a mulching blade at full speed across uneven terrain.

If you've already got the 11558 blade sitting on a shelf waiting for a fix, this is it. Drop it in, torque your hardware to spec, and move on. No machining, no fabrication, no workarounds.

What you get

One reducer, ready to install. Just unbox it, fit it into your blade's center hole, and mount the assembly to your LM1160 deck spindle as normal. That's the entire process.

Works for anyone running a Kubota LM1160 deck who wants to use the 11558 mulching blade without modification to either the blade or the deck hardware.

Specifications

Design by SmilingImpact