SCS Professional Series Quick Change Gear Set - 6 Spline - Set 617 - 4.11 Ratio 2.49 / 6.78 - 4.33 Ratio 2.62 / 7.14 R100033XL Features:Designed to fit low in QRP50-820 Windshield Size:Large/X-Large Mounting Bolt Pattern 2

SCS Professional Series Quick Change Gear Set 6 Spline Set 617 4.11 Ratio 2.49 6.78 4.33 Ratio 2.62 7.14 R100033XL Features:Designed to fit low in QRP50 820 Windshield Size:Large X Large Mounting Bolt Pattern 2 Features:Designed to fit low in the block to clear firewall and intake combinationsSupplied with bronze gearSupplied with large diameter HEI style distributor cap and rotorMust be used with an MSD Crank Trigger and MSD Ignition ControlO ring seals can be added to modified blocks to improve oil pressure controlSpecial oil tract improves lubrication to the distributor and cam gearShaft is guided by a sealed ball bearing and an extra long sintered bushingOversized polished steel shaft with a QPQ coating for friction reductionCNC machined billet aluminum housing and Dupont Rynite base The non magnetic pickup cannot be false triggered