Hastings "Tough Guy" Racing File-Fit Piston Ring Set - Bore Size: 4.060" Top Ring: 1/16", Second Ring: 1/16", Oil Ring: 1/8" - Oil Ring Tension: Standard 919100 This aggressive sounding system is

This aggressive sounding system is designed to replace the original rear mounted mufflers located behind the rear axle

The ultrabright 10” glove-friendly touchscreen is designed for high visibility

Fits Through Frame Tubing - From 1

Includes Large Polished Stainless Steel Oval Tips

Ball and socket joint design allows for 360 degrees of rotation between gauge and clamp to accommodate a variety of bar orientations and installation points

Hastings "Tough Guy" Racing File-Fit Piston Ring Set - Bore Size: 4.060" Top Ring: 1/16", Second Ring: 1/16", Oil Ring: 1/8" - Oil Ring Tension: Standard 919100 This aggressive sounding system isHastings 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