Richmond Ring and Pinion - 3.73 Ratio - 30 Spline Pinion - 3 Series - 8.875 in - GM 12-Bolt 49-0039-1 R010003YM titanium retainer for GM Gen

titanium retainer for GM Gen III applications with #26915 or #26918 Beehive Valve Springs allows you to gain speed and power because titanium retainers are lighter and stronger than most steel ones

All American 400 and any late model race requiring on-the-fly pit stops

Threads are 7/16"-14 x 1

Steel wire rings for the greatest combustion seal strength

00 inch black ceramic coated 304 stainless steel tips showing off the Flowmaster logo and exits in front of the rear tire

Richmond Ring and Pinion - 3.73 Ratio - 30 Spline Pinion - 3 Series - 8.875 in - GM 12-Bolt 49-0039-1 R010003YM titanium retainer for GM GenRICHMOND is the leading manufacturer of professional quality, hi performance ring and pinion sets. For over 80 years, the Double Diamond has signified the highest quality gears in the racing industry! GM 12 Bolt Installation Notes: When replacing a 2. 73 3. 90 ratio with a Richmond Hi Performance Ring & Pinion, the carrier must be replaced with a carrier from a stock 4. 10, 4. 56 or 4. 88 ratio. When installing 5. 14 to 6. 14 ring & pinion sets,