R&D SuperJet Afterburner Pump Core Sleeve

R&D SuperJet Afterburner Pump Core Sleeve.Transforms the O.E.M SuperJet pump into a high performing large hub, high pressure axial flow design inexpensively. Experience much better hole shots and 1 mph plus gains in top speed performance with the added pump efficiency and thrust. The Afterburner Pump Core will drastically increase pump hook up and rear end traction. Allows impeller changes to be made easily in minutes. Rear cone length is tunable with kit supplied spacer shims which allows custom peak RPM tuning for any brand or pitch of impeller. Better holeshots, hook up, top speed, tuneability, and R&D quality at a very reasonable price.