Hastings "Tough Guy" Racing Standard Piston Ring Set - Bore Size: 4.040" Top Ring: 1/16", Second Ring: 1/16", Oil Ring: 3/16" - Oil Ring Tension: Standard Fuel Log Does not fit #81120 Pro

Does not fit #81120 Pro Ratchet shifter

Stainless-Steel Positive Locking Ties are designed for high heat applications

you can avoid costly repairs to your fuel system and ensure peak engine performance

Engines with center bolt style valve covers require ALL81341 mounting kit

Manifold and controller software updates provided over the air via free mobile app

Hastings "Tough Guy" Racing Standard Piston Ring Set - Bore Size: 4.040" Top Ring: 1/16", Second Ring: 1/16", Oil Ring: 3/16" - Oil Ring Tension: Standard Fuel Log Does not fit #81120 ProHastings racing piston rings deliver race winning performance in even the most extreme applications. The low tension, low friction design provides unsurpassed combustion seating and exceptional sealing. Each set includes plasma moly, high tensile cast iron top rings; reverse twist, taper faced cast iron second rings, and choice of standard or low tension Flex Vent stainless steel oil control rings. Low tension oil rings make significant increases in