Check the listing for details. Champion R15B Two-Stage Bare Pump- 5,7.5HP. Condition: New. Listed at 1975.00 USD. Model: R15B TWO-STAGE BARE PUMP (5 & 7.5 HP)IN STOCK READY TO SHIPNo. of Cylinders: 2Bore and Stroke (in.): 4-5/8 (2) & 2-1/2 x 3Flywheel: 16.5Lubrication: Splash LubricatedCrankcase: Cast IronBearings: Tapered RollerCylinder: Aluminum with Cast Iron LinerValves: Disc ValvesIntake Filter: 5 MicronMax Pressure: 175 PSIWeight: 125 lbs.ONE YEAR LIMITED WARRANTY1 Multi-finned cylinders- Cooler operating temperatures result in longer life and consistent performance over time.2 Integral cylinder/head- Gasket-less design eliminates the possibility of blown head gaskets for trouble-free operation.3 Balanced pistons- Aluminum alloy first-stage piston is weight matched to the cast iron second-stage piston, ensuring proper balance.4 Piston rings- Two compression rings and one oil control ring provide excellent oil control, and high efficiency air delivery.5 Lightweight connecting rods- High-density, die-cast aluminum alloy rods minimize reciprocating weight. An integral, precision- bored crank pin bearing and a needle bearing for the piston pin properly distribute bearing loads for longer bearing life than bushings.6 Pressure relief valves- Located in interstage and discharge.7 Intercoolers- Large-diameter finned tubing is positioned to obtain the greatest cooling effect between stages for maximum compressor efficiency.8 Optimized cooling fan/flywheel- Precision balanced flywheel has fan blades for optimum compressor cooling and life.9 Reliable, high-flow valves- Single-unit, disc-type valves provide low lift and long life. Discs are made of corrosion resistant Swedish steel. Valves are easily serviced by removing the manifolds only.10 Over-sized main bearings- Tapered roller-type main bearings provide full contact and support of the crankshaft plus delivers the longest possible life.11 Balanced crankshaft- Constructed of rugged ductile iron with large diameter throws for minimum bearing loads and counterweights to minimize vibration.12 Large capacity crankcase- Rugged cast iron oil reservoir has convenient sight gauge glass, corner oil fill boss and large oil drain.13 Loadless starting- Positive acting, governor-type centrifugal unloader assures longer motor life by allowing the compressor to start unloaded every time.