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LAWN-BOY 25" Rear Engine Rider Replacement Drive Chain

These rugged drive chains measure 41" with 82 pins/rollers including a supplied master joiner link. 
Our Premium #40 chains are rugged to ANSI Standards with hardened solid steel rollers and pins. 
Shot peened side plates for stress relief and longer service life. Bulk Packaged - No retail packaging.
Quick and easy installation with included master joiner link. 

Chain Pitch:           0.500"
Roller Diameter:    0.312"
Roller Width:          0.312"
Pin Diameter:         0.156"
Plate Thickness:    0.060"
Tensile strength:    3700 Pounds


If your drive chain is making a popping / clicking noise or sounds like it is binding when it runs, not running as quiet as it once did , the chain is worn/stretched beyond it's service limit and ready to fail. Order replacements now to have on hand for the inevitable.

  Please measure and verify the actual # of links or the overall length of your drive chain before ordering. 
  If the chain you need is longer or shorter, contact us, we will make one especially for your needs.

This part is compatible with the following machines:

  • Lawn Boy 80040 - Lawn-Boy 25" Easy Mulch Rear-Engine Rider, 1994 (SN: 4900001-4999999) - REAR AXLE ASSEMBLY
  • Lawn Boy 80040 - Lawn-Boy 25" Power Mulch Rear-Engine Rider, 1993 (SN: 3900001-3999999) - REAR AXLE ASSEMBLY