The Power Pack Plus for Pumpers features a:

• high performance aluminum valve (with an enlarged chamber to supply more air per shot)
• stronger, high performance hammer spring (part 1 of the Pumper's Pack)
• enlarged exhaust port (part 2 of the Pumper's Pack)

The trio has been available for years for the CO₂ guns, but now pumper fans can enjoy all three performance components, too!

Notes:

• The PPPP kit, as I call it, will NOT work with the first generation 1322/1377 (those having a rear cocking knob on the very back). If you have that era gun, ONLY the power valve will work, which is available separately below.
• If you have a 1377/1322 that came with a plastic breech (and no rear cocking knob) then the trio will work, though you can still buy just the valve if you want.
• If you have a P1377/P1322, then the trio will work or you can buy just the valve.
• The valves are generally safe up to 20 pumps. Enjoy that extra velocity boost, if you want to take the time to pump that much.

Basic Kit is the Power Valve, Power Spring & Power Bushing

These are just reference photos, but the Deluxe Kit also includes the solid aluminum piston.
It's the Power Valve, Power Spring, Power Bushing & Solid Aluminum Piston.

Related Kits

• CO2 Power Valve Only
• Power Hammer Spring Only
• Max Flow Exhaust Bushing Only
   
• Power Pack (valve, spring)
• Power Pack Plus (valve, spring, bushing)
• Power Pack Plus for Pumpers (valve, spring, bushing)
   
• Standard Pumper Valves
• Solid Aluminum & Brass Pumper Pistons
   
• Brass Pumper Valves
• Brass Power Pack Plus for Pumpers (valve, spring, bushing)
   
• Pumper's Pack (spring, bushing (also works on CO2))
• Performance Pack (valve, spring, bushing, adjustable sear)
• Triple Pack (spring, bushing, extra 130-036 sleeve)
   
• Flat Man's Pack (flat valve and piston for pumpers)
• Rifleman's Pack (valve, spring, bushing, 2260 trigger)
   
• Professional's Pack (a ton of stuff!)
• The Master Class Kit (a ton of stuff + two stage trigger!)