Richmond Ring and Pinion - 3.73 Ratio - 30 Spline Pinion - 3 Series - 8.875 in - GM 12-Bolt 12BC373T Quick Turn Mounting Bracket Fully machined from venturii throat

Fully machined from venturii throat to throttle bore for predictable & repeatable performance

This prevents fuel from loading up on the plugs

Certified to SFI 3

Please note a fitting kit is required to attach the visor to your helmet

RECOMENDATIONS:

Richmond Ring and Pinion - 3.73 Ratio - 30 Spline Pinion - 3 Series - 8.875 in - GM 12-Bolt 12BC373T Quick Turn Mounting Bracket Fully machined from venturii throatEXCel drivetrain products are engineered to exceed OEM specifications by manufacturing to precise specifications in world class factories, using the latest heat treatment technology, with extensive quality controls throughout.; Richmond Gears EXCel drivetrain products offer high quality OEM replacement drivetrain products for your vehicle.; Richmond Gears EXCel line of ring and pinon gearsets provide Richmond quality at affordable prices.; All EXCel