This is the Traxxas TRX 3.3 Racing Engine without Starter and with IPS (Integrated Pilot Shaft) Crankshaft. This version requires use of a bump starter or starter box and will not accept a pull start or the Traxxas EZ-Start system

SPECS:
Displacement: .20 cu in (3.3cc)
Specs such as bore, stroke, RPM and horsepower are not provided, contact Traxxas for further details
Weight: 9.1oz (257g)
Distance between mounting holes same side: 0.43" (11mm)
Distance between mounting holes opposite side: 1.2" (32mm)
Distance from center of engine to front bearing: 1.2" (32mm)
Distance/bottom of mounting flanges/top of cylinder head: 3.6" (92mm)
Distance/ crankcase bottom to top of cylinder head: 44" (105mm) Width of mounting flanges: 1.5" (39.5mm)