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9-1/2” Ford Pro Gears, 1.313” diameter pinion
Category: Ring & Pinion Sets
Part Number(s): Ford 9-1/2”, 9310, Small Pinion
9.5” ring gear diameter, 1.313” diameter pinion stem, 28 spline pinion, 9310 material. These gears are to be used in cases with special clearance or MW Thru-Bolt aluminum cases (p/n 57430, 57440, 57448 or 57448-95S, 57458) with “U” revision or later. Requires special pinion support (p/n 57620 or 57670) and input yoke (p/n 390008) or coupler (p/n 40300). These gears are for use in higher horsepower drag racing applications. Part number brands: 79- are Richmond SF prefix are gears that have the M/W Suprar-Fin surface improvement process.
$603.13 – $710.56 Price Range

Items marked with an asterisk (*) are available from limited stock
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Shot Peen Gear Upgrade
Part Number(s):  PEEN-02
Add Shot-Peening to your Ring and Pinion Gear.

This surface improvement decreases the likelihood of cracks forming on the gear.
Nearly all fatigue cracks begin at the surface of the part. By overlapping the dimples of the media, Shot-Pee
Price: $95.00