PEM Standard Quick Change Gear Set 1.900 Spur Ratio Set 19 10 Spline - 4.11 Ratio 4.89/3.45 20-OTL-NG-S There is a cam sync

There is a cam sync output for fuel controllers or data acquisition

Diameter Throttle Bores

570" ID that works well with our 951 dual valve springs

Locking dipstick tubes are required on 10

69" (170mm)

PEM Standard Quick Change Gear Set 1.900 Spur Ratio Set 19 10 Spline - 4.11 Ratio 4.89/3.45 20-OTL-NG-S There is a cam syncProduct Description: Quick Change Gear Set Standard Set 19 10 Spline 4. 11 Ratio 4. 89 3. 45 4. 86 Ratio 5. 78 4. 08 Steel Sold Individually PEM Racing (Performance Engineering and Manufacturing) offers a wide selection of quick change gear sets, ring and pinion gears, differential cases, and other rear end components.