No, the South Bend Heavy Duty Clutch Kit 13125-OK-HD does not require you to upgrade you input shaft.
The South Bend Heavy Duty Clutch Kit 13125-OK-HD will not work with the 1 3/8 input shaft. (1.25" input standard input shaft only)
Yes, the SOUTH BEND HEAVY DUTY CLUTCH KIT 13125-OK-HD will fit the NV4500 transmission.
Complete the job with these highly suggested add-on products.
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